What is a disproportionation reaction?

Answers

Answer 1
what is a disproportionation reaction.

Related Questions

Given the balanced ionic equation representing a reaction: 2al(s) + 3cu2+(aq) → 2al3+(aq) + 3cu(s)which half-reaction represents the reduction that occurs?al → al3+ +3eal3+ +3e → alcu→ cu2+ +2ecu2+ + 2e → cu

Answers

Option D : [tex]Cu^{2+}(aq)+2 e^{-}\rightarrow Cu(s)[/tex]

Reduction take place when oxidation state of atom of an element decrease. Here, addition of electron/s takes place. Opposite to that in oxidation, oxidation state increases and here, loss of electron/s take place.

The balanced chemical equation is as follows:

[tex]2Al(s)+3Cu^{2+}(aq)\rightarrow 2Al^{3+}(aq)+3Cu(s)[/tex]

Here, oxidation state of Al changes from zero to +3 thus, it undergoes oxidation and oxidation state of Cu changes from +2 to zero thus, it undergoes reduction.

The half reactions will be:

Oxidation: [tex]Al(s)\rightarrow Al^{3+}(aq)+3e^{-}[/tex]

Reduction: [tex]Cu^{2+}(aq)+2 e^{-}\rightarrow Cu(s)[/tex]

Therefore, option D is correct.


The ionic equation represents the electrolytes in the dissociated ion form in the aqueous solution. Half-reaction which represents the reduction is the increased number of electrons in the copper atom.

What is reduction?

Reduction in the chemical reaction is the increase in the number of electrons in the atoms, while oxidation is the decrease in the number of electrons from an atom.

The balanced chemical reaction is shown as:

[tex]\rm 2Al + 3Cu^{2+} \rightarrow 2Al^{3+} + 3Cu[/tex]

Reduction occurs when the oxidation number of the atom decreases and electrons are added to it. In the reaction the oxidation number of copper changes from +2 to 0 hence, undergoes reduction.

The half-reaction of the equation is written as,

Oxidation: [tex]\rm Al \rightarrow Al^{3+} + 3e^{-}[/tex]

Reduction: [tex]\rm Cu^{2+} + 2e^{-} \rightarrow Cu[/tex]

Therefore, reduction takes place at option D. [tex]\rm Cu^{2+} + 2e^{-} \rightarrow Cu.[/tex]

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How many milliliters of 0.20 molar koh solution are needed to exactly neutralize 20. milliliters of 0.50 molar hcl?

Answers

the balanced equation for the neutralisation reaction between KOH and HCl is as follows
KOH + HCl --> KCl + H₂O
stoichiometry of KOH to HCl is 1:1
the number of HCl moles reacted = HCl concentration x volume 
number of HCl moles = 0.50 mol/L x 0.020 L = 0.01 mol
according to molar ratio of 1:1
number of KOH moles required to neutralise 0.01 mol of HCl = 0.01 mol of KOH
molarity of KOH = 0.20 M
there are 0.20 mol in 1 L Then 0.01 mol are - 0.01 mol / 0.20 mol/L = 50 mL 
50 mL of 0.20 M KOH required 

How many grams of kbr are required to make 350. ml of a 0.115 m kbr solution? 3.04 g 4.79 g 40.3 g 0.338 g?

Answers

the answer is 4.79g also add me on snap:at jessea7772

 

[tex]\boxed{\text{4.79 g}}[/tex] of KBr is required to make 350 mL of 0.115 M KBr solution.

Further Explanation:

Concentration is defined as the amount or quantity of solute present in specific amount of solution. In order to evaluate concentration of various solutions, different concentration terms are used. Some of these are mentioned below.

1. Molarity (M)

2. Molality (m)  

3. Mole fraction (X)  

4. Parts per million (ppm)  

5. Mass percent ((w/w) %)  

6. Volume percent ((v/v) %)  

Molarity is defined as the number of moles of solute that can be dissolved in one litre of the solution. It is denoted by M and its unit is mol/L.

The formula to calculate molarity of KBr solution is as follows:

  [tex]\text{Molarity of KBr solution}=\dfrac{\text{Moles of KBr}}{\text{Volume (L) of KBr solution}}[/tex]  ...... (1)

Rearrange equation (1) to calculate moles of KBr.

[tex]\begin{aligned}{\text{Moles of KBr}&=\left[{(\text{Molarity of KBr solution})\\&\text{ }\text{ }\text{ }(\text{Volume (L) of KBr solution})]\right]\end{aligned}}[/tex]        ...... (2)

Substitute 0.115 M for molarity of KBr solution and 350 mL for volume of KBr  solution in equation (2).

[tex]\begin{aligned}\text{Moles of KBr}&=(\text{0.115 M})(\text{350 mL)}\left(\dfrac{\text{10}^{-3}\text{ L}}{\text{1 mL}}\right)\\&=\text{0.04025 mol}\end{aligned}[/tex]

The formula to calculate moles of KBr is as follows:

[tex]\text{Moles of KBr}=\dfrac{\text{Mass of KBr}}{\text{Molar mass of KBr}}[/tex]                                       ...... (3)

Rearrange equation (3) for mass of KBr.

[tex]\text{Mass of KBr}=(\text{Moles of KBr})(\text{Molar mass of KBr})[/tex]               ...... (4)

Substitute 0.04025 mol for moles of KBr and 119.002 g/mol for molar mass of KBr in equation (4).

[tex]\begin{aligned}{\text{Mass of KBr}&=(\text{0.004025 mol})(\text{119.002 g/mol})\\&=\text{4.79 g}}\end{aligned}[/tex]

Therefore 4.79 g of KBr is required to make 350 mL of a 0.115 M KBr solution.

Learn more:

1. Determine the moles of water produced: https://brainly.com/question/1405182

2. What is the molarity of the stock solution? https://brainly.com/question/2814870

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Concentration terms

Keywords: molarity, KBr, 350 mL, 0.115 M, 4.79 g, mass, molar mass, concentration terms, concentration, solute, moles of solute, volume.

Which product of the ultraviolet decomposition of cfcs acts as the catalyst for ozone decomposition?

Answers

The answer is Chlorine atoms.   This is the product of the ultraviolet decomposition of cfcs acts as the catalyst for ozone decomposition.  

The chlorine atom released from the ultraviolet decomposition of CFCs acts as a catalyst for the decomposition of ozone in the atmosphere.

The product of the ultraviolet decomposition of chlorofluorocarbons (CFCs) that acts as a catalyst for ozone decomposition is the highly reactive chlorine atom (Cl). When CFCs like CCl₂F₂ are exposed to UV radiation, a chlorine atom is released due to the photolytic cleavage of the CFC molecule. This chlorine atom can then catalyze the destruction of ozone by participating in a series of reactions where it converts ozone (O3) into oxygen gas (O2), regenerating the chlorine atom to continue the cycle of ozone depletion.

A simplified mechanism of this process is as follows:

Cl + O₃ → ClO + O₂ClO + O → Cl + O₂

These reactions demonstrate how chlorine liberated from CFCs can lead to the breakdown of a large number of ozone molecules, thus significantly contributing to ozone layer depletion.

A beaker contains 0.50 mol of potassium bromide in 600 ml of water. an additional 600 ml of water is added. the number of moles of potassium bromide in the beaker is

Answers

The answer is 0.50 mol. The number of moles of potassium bromide in the beaker will not change since there is no additional potassium bromide introduced to the solution. The molarity of potassium bromide, the number of moles of water, the volume of the water solvent and the volume of the solution will all change if water is added.
Final answer:

To find the number of moles of potassium bromide in the beaker after adding additional water, calculate the new concentration and multiply it by the new volume.

Explanation:

To find the number of moles of potassium bromide in the beaker, we can use the formula:

Moles = Concentration x Volume

Initially, the beaker contains 0.50 mol of potassium bromide in 600 ml of water. When an additional 600 ml of water is added, the total volume becomes 1200 ml. To find the new concentration, we divide the number of moles (0.50 mol) by the new volume (1200 ml):

Concentration = Moles / Volume = 0.50 mol / 1200 ml = 0.00042 mol/ml

The new number of moles of potassium bromide in the beaker is:

New Moles = Concentration x Volume = 0.00042 mol/ml x 1200 ml = 0.50 mol

Determine the concentration of an unknown acid or base in a neutralization reaction

Answers

Titration is the process by which the concentration of an unidentified analyte is found

What net ionic equation describes the reaction when these solutions are mixed?

Na3PO4 (aq) + CaCl2(aq) →

Na+(aq) + Cl– (aq) → NaCl(s)

2Ca2+(aq) + Na+(aq) → NaCa2(s)

2PO43–(aq) + 3Ca2+(aq) → Ca3(PO4)2(s)

2PO43–(aq) + Cl– (aq) → Cl2(PO4)3(s)

Answers

Balanced chemical reaction:
2Na₃PO₄(aq) + 3CaCl₂(aq) → 6NaCl(aq) + Ca₃(PO₄)₂(s).
Ionic reaction:
6Na⁺(aq) + 2PO₄³⁻(aq) + 3Ca²⁺(aq) + 6Cl⁻(aq) → 6Na⁺(aq) + 6Cl⁻(aq) + Ca₃(PO₄)₂(s).
Net ionic reaction: 2PO₄³⁻(aq) + 3Ca²⁺(aq) → Ca₃(PO₄)₂(s).
(aq) means that substances are dissociated on cations and anions in water.
(s) means solid.

Answer:

Net ionic reaction: 2PO₄³⁻(aq) + 3Ca²⁺(aq) → Ca₃(PO₄)₂(s).

What is the actual name of compound-s that is used to treat arthritis?

Answers

Reichsteins substance if I remember correctly.

Hope this helped! :)

- Juju

Metallic copper is formed when aluminum reacts with copper(ii) sulfate. how many grams of metallic copper can be obtained when 54.0 g of al react with 319 g of cuso4? al + 3cuso4 â al2(so4)3 + 3cu

Answers

Answer is: 127 grams rams of metallic copper can be obtained.
Balanced chemical reaction: 2Al + 3CuSO₄ → Al₂(SO₄)₃ + 3Cu.
m(Al) = 54.0 g.
n(Al) = m(Al) ÷ M(Al).
n(Al) = 54 g ÷ 27 g/mol.
n(Al) = 2 mol.
m(CuSO₄) = 319 g.
n(CuSO₄) = 319 g ÷ 159.6 g/mol.
n(CuSO₄) = 2 mol; limiting reactant.
From chemical reaction: n(CuSO₄) : n(Cu) = 3 : 3 (1 : 1).
n(Cu) = 2 mol.
n(Cu) = 2 mol · 63.55 g/mol.
n(Cu) = 127.1 g.

Answer: 127 g

Explanation:

True or false there are no ions present in a solution of a weak electrolyte

Answers

False, there are ions in a solution of a weak electrolytes.
If would be no ions, it would be a solution of a. non-electrolyte.

The correct answer is false.

Hope this helps! ;)


What is the purpose of mixing salt with the ice in a homemade ice cream maker?

Answers

I makes it ridiculously cold, if I'm not mistaken.

Which of the following is not always true about synthesis reaction

Answers

Answer is: There is only one reactant.

Synthesis reaction is a type of reaction in which multiple reactants combine to form a single product.

For example, balanced chemical reaction: Ba + F₂ → BaF₂.

In barium fluoride, barium has oxidation number +2 and fluorine has oxidation number -1, so compound has neutral charge.

Second chemical reaction: CaO(s) + H₂O(l) → Ca(OH)₂(aq).

One molecule is produced from two molecules.

Final answer:

A synthesis reaction typically involves substrates bonding to form larger molecules, but the process is not always linear, may involve multiple steps and intermediates, and can include unexpected outcomes like isomerization or complex cyclization patterns.

Explanation:

One aspect that is not always true about a synthesis reaction is that they do not necessarily occur in a linear fashion. A synthesis reaction, in chemistry, usually involves two or more substrates reacting to form a larger molecule, commonly expressed as A + B → AB. This process generally requires energy to form new bonds. However, it is not always a straightforward single step; multiple-step synthesis may be involved, where intermediate products are formed before the final molecule is synthesized.

Moreover, certain synthesis reactions, like those leading to the formation of allenes and alkynes, may competewith isomerization processes, leading to a mix of products rather than a single, pure compound. Also, not all synthesis reactions strictly follow predictable rules like Markovikov's rule, which is often used to predict the outcome of electrophilic addition reactions. In cases where the molecular geometry affects reactivity, the result of a synthesis reaction might diverge from expected patterns.

Finally, the complexity of the molecular structure being synthesized can affect the nature of the synthesis reaction. For example, schemes involving cyclization can lead to the formation of multiple new rings in a compound, demonstrating that synthesis can be a versatile tool for constructing complex molecules.

What element has the electron configuration 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p2?

Answers

Answer:

Lead, Pb

Explanation:

Electron configuration of an element depicts the arrangement or the distribution of electrons in different energy levels (orbitals) within the atom. This arrangement is based on the Aufbau principle which states that the electrons are added such the orbital with the lowest energy gets filled up first.

The given electron configuration is:

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p²

The total number of electrons = 82

For a neutral atom; number of electrons = atomic number(Z)

Based on the periodic table, the element with atomic number = 82 is lead (Pb).

a rock has a density of 15 g/cm3 and a mass of 50 g is dropped into a 100ml graduated cylinder containing 55 ml of water. to what height will the water rise in the cylinder

Answers

Answer is: the height of cylinder is 58.33 ml.
d(rock) = 15 g/cm³.
m(rock) = 50 g.
V(rock) = m(rock) ÷ d(rock).
V(rock) = 50 g ÷ 15 g/cm³.
V(rock) = 3.33 cm³ = 3.33 ml..
h(cylinder) = V(rock) + V(water).
h(cylinder) = 3.33 cm³ + 55 cm³.
h(cylinder) = 58.33 cm³.
We know that, Density = Mass/Volume


Therefore, Volume = Mass /Density = 50/15 = 3.33 ml

Thus, volume occupied by rock = 3.33 ml
 
Thus, total volume occupied in graduated cylinder = 55 ml + 3.33 = 58.33 ml 

∴volume of graduated cylinder will rise by 3.33 cm3.

Naomi is investigating the properties of a solid material. It takes 120 joules to raise the temperature of 10 grams of the material by 5 degrees. What is the specific heat of the material?

Answers

when heat energy is supplied to a material it can raise the temperature of mass of the material.
Specific heat is the amount of energy required by 1 g of material to raise the temperature by 1 °C.
equation is 
H = mcΔt
H - heat energy 
m - mass of material 
c - specific heat of the material 
Δt - change in temperature
substituting the values in the equation 
120 J = 10 g x c x 5 °C
c = 2.4 Jg⁻¹°C⁻¹

3. When two atoms of 2H (deuterium) are fused to form one atom of 4He (helium), the total energy evolved is 3.83 × 10-12 joules. What is the total change in mass (in kilograms) for this reaction?

4. The mass of a proton is 1.00728 atomic mass units (amu) and the mass of a neutron is
60Co nucleus whose nuclear mass is 1.00867 amu. What is the mass defect (in amu) of a 27
59.9338 amu? What is the mass defect in kilograms? What is the energy equivalent of this mass in kilojoules?
5. The equation shows one mole of ethanol fuel being burned in oxygen. Convert the energy released into its equivalent mass.
C2H5OH(l) + 3 O2(g)  2 CO2(g) + 3 H2O (l) ΔH = -1418 kJ/mol

Answers

3.
∆E = ∆m x c ² ∆m = E / c ² ∆m = 3,83•10^-12 / 3•10^8 ² ∆m = 4,256•10^-29 kg

Taking this class as well 

Answer:

For 3: The total mass change of the reaction is [tex]4.255\times 10^{3}kg[/tex]

For 4: The mass defect is [tex]0.911\times 10^{-27}kg[/tex] and energy equivalent to this mass is [tex]8.199\times 10^{-14}kJ[/tex]

For 5: The equivalent mass of the reaction is [tex]1.5755\times 10^{-11}kg[/tex]

Explanation:

For 3:

To calculate the mass change of the reaction for given energy released, we use Einstein's equation:

[tex]E=\Delta mc^2[/tex]

E = Energy released = [tex]3.83\times 10^{-12}J[/tex]

[tex]\Delta m[/tex] = mass change = ?

c = speed of light = [tex]3\times 10^8m/s[/tex]

Putting values in above equation, we get:

[tex]3.83\times 10^{-12}Kgm^2/s^2=\Delta m\times (3\times 10^8m/s)^2\\\\\Delta m=4.255\times 10^3kg[/tex]

Hence, the total mass change of the reaction is [tex]4.255\times 10^{3}kg[/tex]

For 4:

For the given isotopic representation:  [tex]_{27}^{60}\textrm{Co}[/tex]

Atomic number = Number of protons = 27

Mass number = 60

Number of neutrons = Mass number - Atomic number = 60 - 27 = 33

To calculate the mass defect of the nucleus, we use the equation:

[tex]\Delta m=[(n_p\times m_p)+(n_n\times m_n)+]-M[/tex]

where,

[tex]n_p[/tex] = number of protons  = 27

[tex]m_p[/tex] = mass of one proton  = 1.00728 amu

[tex]n_n[/tex] = number of neutrons  = 33

[tex]m_n[/tex] = mass of one neutron = 1.00867 amu

M = Nuclear mass number = 59.9338 amu

Putting values in above equation, we get:

[tex]\Delta m=[(27\times 1.00728)+(33\times 1.00867)]-[59.9338]\\\\\Delta m=0.54887amu[/tex]

Converting the value of amu into kilograms, we use the conversion factor:

[tex]1amu=1.66\times 10^{-27}kg[/tex]

So, [tex]0.54887amu=0.54887\times 1.66\times 10^{-27}kg=0.911\times 10^{-27}kg[/tex]

To calculate the equivalent energy, we use the equation:

[tex]E=\Delta mc^2[/tex]

E = Energy released = ?

[tex]\Delta m[/tex] = mass change = [tex]0.911\times 10^{-27}kg[/tex]

c = speed of light = [tex]3\times 10^8m/s[/tex]

Putting values in above equation, we get:

[tex]E=(0.911\times 10^{-27}kg)\times (3\times 10^8m/s)^2\\\\E=8.199\times 10^{-11}J[/tex]

Converting this into kilojoules, we use the conversion factor:

1 kJ = 1000 J

So, [tex]8.199\times 10^{-11}J=8.199\times 10^{-14}kJ[/tex]

Hence, the mass defect is [tex]0.911\times 10^{-27}kg[/tex] and energy equivalent to this mass is [tex]8.199\times 10^{-14}kJ[/tex]

For 5:

For the given chemical reaction:

[tex]C_2H_5OH(l)+3O_2(g)\rightarrow 2CO_2(g)+3H_2O(l);\Delta H=-1418kJ/mol[/tex]

To calculate the equivalent mass of the reaction for given energy released, we use Einstein's equation:

[tex]E=\Delta mc^2[/tex]

E = Energy released = [tex]1418kJ=1418\times 10^3J[/tex]

[tex]\Delta m[/tex] = mass change = ?

c = speed of light = [tex]3\times 10^8m/s[/tex]

Putting values in above equation, we get:

[tex]1418\times 10^{3}Kgm^2/s^2=\Delta m\times (3\times 10^8m/s)^2\\\\\Delta m=1.5755\times 10^{-11}kg[/tex]

Hence, the equivalent mass of the reaction is [tex]1.5755\times 10^{-11}kg[/tex]

which has not been a major source of CFCs

Answers

air conditioners hope this helps

Answer:

• televisions

Uric acid is found in sweat released from the pores in skin. What could be an explanation for this?
A) Sweat glands in the skin produce uric acid on very hot days.
B) The secretion of uric acid prevents water loss from the body.
C) Skin is also an excretory organ, which removes wastes through sweat.
D) The secretion of uric acid helps to maintain the temperature of the body.

Answers

I'm pretty sure it's B

Which of the following best predicts the outcome of a fission reaction involving uranium-235?

Two U-235 atoms form bonds with each other, absorbing a large amount of energy.
An atom of U-235 absorbs electrons, undergoes an increase in energy level, and splits into fragments.
The nuclei of two U-235 atoms join together to form a heavier uranium isotope, and energy is released.
The nucleus of an atom of U-235 splits, resulting in two smaller fragments and the release of a large amount of energy.

Answers

The correct option is this: THE NUCLEUS OF AN ATOM U-235 SPLITS, RESULTING IN TWO SMALLER FRAGMENTS AND THE RELEASE OF A LARGE AMOUNT OF ENERGY. 
The process of nuclear fission involves the splitting of a nucleus of a radioactive element into two smaller nuclei of different elements accompany with a large release of energy. The energy released during nuclear fission is usually used to generate electricity power. 

Answer:

The nucleus of an atom of U-235 splits, resulting in two smaller fragments and the release of a large amount of energy

Explanation:

In the fission reaction U-235 absorbs one neutron and breaks into two new atoms (also known as  fission fragments) and three neutrons with the release of massive amount of energy.  

The nuclear fission reaction is as follows:

¹₀n + ²³⁵₉₂U → ¹⁴¹₅₆Ba + ⁹²₃₉Kr + 3 ¹₀n

U-235 has a half life of 703.8 million years. In the fission reaction massive amount of energy 202.5 MeV is released.  

Titration Lab Sheet: Day 2 (Alternate)‼️‼️‼️

Answers

Hey did you ever find the answers to this?

Answer:

See explanation below

Explanation:

As the problem states, this is an acid base titration, and both titrations are already saying that they were both neutralized. When an acid base titration is neutralized, means that it reach it's equivalence point. In this point, we can say that the moles of the acid are the same moles of the base. In other words the following:

n₁ = n₂   (1)

1 is the acid and 2 is the base.

You should note that the above expression is real when the mole ratio is 1:1. When it's not, we need to see the mole ratio and then, adjust the expression to that.

the moles can also be expressed as:

n = M * V

Replacing in the first expression we have:

M₁V₁ = M₂V₂  (2)

With this expression we can calculate either the volume or concentration of the compounds given. Let's do this by parts:

Titration 1:

In this case we have KOH and H₂SO₄, so the balanced reaction would be:

2KOH + H₂SO₄ -------> K₂SO₄ + 2H₂O

As you can see, we have 2 moles of KOH and 1 mole of the acid, so the mole ratio is 2:1, therefore, expression (2) becomes:

M₁V₁ = 2M₂V₂

From here, we solve for concentration of the acid (M₁)

M₁ = 2M₂V₂ / V₁

Replacing the given values we have:

M₁ = 2 * 25 * 0.15 / 15

M₁ = 0.5 MThis is the concentration of the acid.

Now, how can we fill the chart? Is easy, we just put the obtained values:

For the acid it would be:

Solution: H₂SO₄;   Molar ratio: 1;    Volume: 15 mL;  Concentration: 0.5 M

For the base:

Solution: KOH;   Molar ratio: 2;    Volume: 25 mL;    Concentration: 0.15 M

Titration 2:

In this case we do the same thing as before but with different data. First the equation:

HBr + NaOH --------> NaBr + H₂O

The equation is already balanced and we can see a mole ratio of 1:1, so we can use expression (2) and solve for concentration of the base instead:

M₁V₁ = M₂V₂

M₂ = M₁V₁ / V₂

M₂ = 30 * 0.250 / 20

M₂ = 0.375 MThis is the concentration of the base.

The chart can be filled the same way as in titration 1:

For the acid it would be:

Solution: HBr;   Molar ratio: 1;    Volume: 30 mL;  Concentration: 0.25 M

For the base:

Solution: NaOH;   Molar ratio: 1;    Volume: 20 mL;    Concentration: 0.375 M

) place these types of bonds in order from the strongest to the weakest (covalent, hydrogen, ionic, van der waals)?

Answers

Ionic > Covalent > Hydrogen > Van der Waals

What type of reaction is shown below?
2Na + 2H2O ?2NaOH + H2 + heat
A. nuclear
B. exothermic
C. endothermic
D. spontaneous

Answers

An exothermic reaction is a type of chemical reaction in which energy is released to the environment in form of heat or light. Endothermic reaction in the other hand is a chemical reaction where energy is taken from the surroundings and thus the surroundings end up with less energy than they started with. In this case; the above reaction is an Exothermic reaction (heat is being released to the surroundings).

Water is capable of dissolving a variety of different substances, which is why it is such a good solvent. it is often called the universal solvent because it dissolves more substances than any other liquid. the reason for this is best explain by which of these?

Answers

Water is often referred as a universal solvent because it is capable dissolving much more solutes as compared to any other solvent.  This is because, water is a high polar molecule. In water, H has partial positive charge while O has partial negative charge. 


Due to this, water favors dissociation of molecules into positively and negatively charged ions. Positively charge ions gets attracted  towards oxygen i.e. negatively charges, while negatively charged ions get attracted towards positive end of water molecule. 


However, it is worth nothing that, despite water being referred as universal solvent, many compounds are insoluble or partially soluble in water. For instance, most of the hydroxide displays poor solubility in water.

Answer:

Water is polar with a positive and negative side.

I hope this helps! Good luck on your test!

What is a characteristic of expressionist wassily kandinsky's improvisation 31?

Answers

A characteristic of Expressionist Wassily Kandinsky's improvisation 31 is Emotional impact is created through distortion and exaggeration. 

Final answer:

The characteristics of Wassily Kandinsky's Improvisation 31 show his innovative use of color and line for their own sake, reflecting his move towards pure abstraction and exploring the emotional and spiritual qualities of art.

Explanation:

A characteristic of Wassily Kandinsky's Improvisation 31 is the use of color and line for their own sake, not to represent something specific. Kandinsky aimed to create a sense of rhythm and staccato in the painting, infusing it with musicality through abstract elements.

Improvisation 31, like many of Kandinsky's works, reflects his move towards pure abstraction and his interest in the spiritual and emotional aspects of art. The painting is a representation of the Expressionist movement in early 20th-century art, seeking to convey inner emotions rather than outward impressions.

Impressionism 31 showcases Kandinsky's innovative approach to art, breaking away from traditional representation and embracing the freedom of abstract expression, marking a significant shift in the art world. Through his use of color, line, and form, Kandinsky creates a visually dynamic and emotionally evocative piece that invites viewers to explore the depths of their subconscious.

If there is a third-quarter moon on July 2, what is the approximate date of the next full moon?

Answers

Answer:

C JULY 23RD

Explanation

Final answer:

The approximate date of the next full moon can be estimated to be approximately 22.5 days after July 2.

Explanation:

The approximate date of the next full moon can be estimated by calculating the time it takes for the Moon to go through its phases. According to the information provided, it takes about 29.5 days for the Moon to complete a full cycle of phases. Since the third quarter moon occurs about a week after the full moon, we can estimate that the next full moon would be approximately 22.5 days after July 2. So, if the third-quarter moon was observed on July 2, the approximate date for the next full moon would be roughly July 9 or 10, depending on the exact time of the third-quarter phase.

Learn more about Moon Phases here:

https://brainly.com/question/31392459

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How many moles of potassium hydroxide are needed to complete neutralize 1.50 moles of sulfuric acid (h2so4). please show all work. 2koh + h2so4 -> k2so4 + 2h2o?

Answers

The balanced equation for the reaction is
2KOH + H₂SO₄  → K₂SO₄ + 2H₂O

The stoichiometric ratio between KOH and H₂SO₄ is 2 : 1

The moles of Sulfuric acid = 1.5 mol

moles of KOH / moles of H₂SO₄= 2 / 1
  moles of KOH / 1.5 mol            =  2
         moles of KOH                   =  2 x 1.5 mol = 3.0 mol

Hence, 3.0 moles of KOH are needed to neutralize the given H₂SO₄ acid 

The site for all chemical reactions that take place in the cell is the

Answers

I believe the cytoplasm is the site of all chemical reactions that take place in a cell. Chemical reactions occur in the cytoplasm of a cell, inside the it there are enzymes which speed up these reactions. Cytoplasm is made up of mainly water, but also contain enzymes, salts, organelles such as mitochondria and various organic molecules.

what is the molarity of a 650. mL solution containing 63 grams of NaCl?

Answers

This problem is solved using following formula,

                              Molarity  =  Moles ÷ Volume of Solution   ----- (1)

Data Given;
                   Volume  =  650 mL  =  0.65 L

                   Mass  =  63 g

Solution:

First of all calculate moles for given mass,

                                      Moles  =  Mass ÷ M.mass

                                      Moles  =  63 g ÷ 58.4 g.mol⁻¹

                                      Moles  =  1.08 mol

Now, putting values of mole and volume in eq. 1,

                                      Molarity  =  1.08 mol ÷ 0.65 L

                                      Molarity  =  1.66 mol.L⁻¹

Answer:

                                     Molarity  =  1.66 mol.L⁻¹

Explanation:

How many protons are in an atom represented by 22088ra88220ra?

Answers

Answer is: there are eighty-eight (88) protons in an atom.
The atomic number (Z) determines total number of protons and uniquely identifies a chemical element, also the atomic number is equal to the number of electrons.
The atomic number (Z) for this atom (radium) is eighty-eight.
The mass number (A) is total number of protons and neutrons in a nucleus, in this example A = 220.

How many grams of sodium chloride must dissolve in 750.0 g of water to make a 0.50 molal solution?

Answers

molality is defined as the number of moles of solute in 1 kg of solvent.
molality of solution to be prepared is 0.50 molal
this means that in 1000 g of water there should be 0.50 mol of NaCl
if 1000 g of water should contain - 0.50 mol 
then 750.0 g of water requires - 0.50 mol/kg x 0.750 kg = 0.375 mol
mass of NaCl in 0.375 mol - 58.5 g/mol x 0.375 mol = 21.9 g
therefore a mass of 21.9 g of NaCl is required 

Final answer:

To make a 0.50 molal solution of NaCl with 750.0 g of water, 21.92 grams of sodium chloride must be dissolved in the water.

Explanation:

To calculate how many grams of sodium chloride (NaCl) are needed to make a 0.50 molal (m) solution with 750.0 g of water, we should understand the definition of molality. Molality is the number of moles of solute per kilogram of solvent. Therefore, a 0.50 molal solution of NaCl requires 0.50 moles of NaCl dissolved in each kilogram (1000 grams) of water. Since we have 750.0 g or 0.750 kg of water, we will adjust this proportionally.

First, calculate the moles of NaCl needed:

0.50 mol/kg × 0.750 kg = 0.375 mol

Next, convert the moles of NaCl to grams. The molar mass of NaCl is approximately 58.44 g/mol:

0.375 mol × 58.44 g/mol = 21.92 g

Therefore, 21.92 grams of sodium chloride must dissolve in 750.0 g of water to make a 0.50 molal solution.

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