How many atoms of zinc are in 0.60 mol of zinc? 2. how many moles is 3.52 × 1024 molecules of water? 3. how many atoms are in 2.00 moles of li? 4. how many moles are in 6.02 x 1023 atoms of carbon? 5. how many moles are in 4.9 x 1023 molecules of zncl2?
Final answer:
To calculate the number of atoms, molecules, or moles, we use Avogadro's number (6.02 × 10²³). There are 6.02 × 10²³ atoms in 0.60 mol of zinc. Dividing the number of molecules by Avogadro's number gives us the moles for each compound in the problems posed.
Explanation:
To solve these types of problems, we use Avogadro's number (6.02 × 10²³), which is the number of units in one mole of any substance. This can be atoms, ions, or molecules, depending on the context of the substance in question.
Answers:
There are 6.02 × 10²³ atoms of zinc in 0.60 mol of zinc.To find how many moles 3.52 × 10²⁴ molecules of water represents, divide by Avogadro's number: 3.52 × 10²⁴ molecules ÷ (6.02 × 10²³ molecules/mol) ≈ 5.84 mol of water.For lithium, there are 2 × 6.02 × 10²³ atoms in 2.00 moles of Li, since 1 mol of any element contains exactly 6.02 × 10²³ atoms by definition.Having 6.02 × 10²³ atoms of carbon means you have 1 mole of carbon, as 1 mol is equivalent to Avogadro's number of atoms.To determine the number of moles in 4.9 × 10²³ molecules of ZnCl₂, divide by Avogadro's number: 4.9 × 10²³ molecules ÷ 6.02 × 10²³ molecules/mol ≈ 0.814 mol of ZnCl₂.define :
elements found in group 17, highly reactive, and gain 1 electron to become stable
HELPPP WILL GIVE BRAINLIEST
The scientist Robert Boyle observed that a gas can expand to fill its container. Explain how Boyle's observation is explained by the Kinetic Theory of Matter.
Which term refers to an electrochemical cell that produces an electric current?
porous barrier
galvanic cell
electrolytic cell
inert electrode
If an element has three isotopes with known natural abundance percentages, what other information is needed to find the average atomic mass of the element?
The mass of each isotope.
The mass of a mole of carbon atoms is 12.011 grams. What is the mass of a single atom of carbon?
Answer:
1.99 x 10^(-23) g
Explanation:
which of the following is the correct structural formula for ethene
Hg(OH)2+H3PO4=Hg3(PO4)2+H2O
The balanced reaction equation can be written as;
[tex]3Hg(OH)_2 + 2H_3PO_4 --- > Hg_3(PO_4)_2 + 6H_2O[/tex]
How to balance chemical reactionBalancing a chemical reaction involves ensuring that the number of atoms of each element is the same on both sides of the equation. Start by writing the unbalanced equation and counting the number of atoms for each element. Begin balancing with the most complex molecules and then move on to balancing other elements.
From the question, we would have to look at the reactants and the products and know the coefficients to add so that we obtain the balanced reaction so we have that the reaction equation is;
[tex]3Hg(OH)_2 + 2H_3PO_4 --- > Hg_3(PO_4)_2 + 6H_2O[/tex]
Learn more about chemical reaction:https://brainly.com/question/34137415
#SPJ6
Describe how to find the atomic number for the element oxygen
Why would the reliability of results collected for an experiment increase when several groups of students conduct the same experiment in class?
A) some groups might make a mistake
B) allows for different hypotheses
C) allows for different conclusions
D) shows that results are consistent
Answer:
D
Explanation:
Which substance would be least likely to dissolve in a polar solvent?
Octane (C8H18) and naphthalene are nonpolar substances and would be least likely to dissolve in a polar solvent like water. Methanol (CH3OH), sodium sulfate (Na2SO4), LiCl, and benzoic acid (CH2CO2H) are polar or ionic and would more readily dissolve.
Explanation:To predict which substance would be least likely to dissolve in a polar solvent like water, one must consider the polarity of the molecules involved. In general, "like dissolves like," which means that polar solvents will dissolve polar substances and nonpolar solvents will dissolve nonpolar substances.
Methanol (CH3OH) and sodium sulfate (Na2SO4) are polar and will likely dissolve in water due to their ability to create intermolecular hydrogen bonds and ionic interactions, respectively. On the other hand, octane (C8H18) is nonpolar, consisting mostly of C-H bonds, and would have the least tendency to dissolve in a polar solvent due to dispersion forces being the primary intermolecular interaction.
Considering LiCl, benzoic acid (CH2CO2H), and naphthalene, LiCl and benzoic acid are more likely to dissolve in water due to their ionic and polar nature, respectively, while naphthalene, being nonpolar, would be the least likely to dissolve.
This is the uneven distribution of bonding electrons in a molecule creating partially positive and negative sides of that molecule. example: water and ammonia have this, but methane does not
Which will dissolve faster in water one gram cube of sugar or one gram of powder sugar?
Powdered sugar dissolves faster than a cube of sugar because it has a greater surface area, which increases the frequency of collisions between the sugar particles and water molecules, hence speeding up the dissolving process.
In the comparison of a one gram cube of sugar and one gram of powdered sugar dissolving in water, the powdered sugar will dissolve faster. This phenomenon is because dissolving is a surface-driven process where solvent molecules collide with the surface of the solute.
The powdered sugar has a greater surface area exposed to the water, increasing the opportunity for these collisions to occur, which enhances the rate of dissolution. Moreover, stirring the solution can increase the rate at which both the powdered and the cube sugar dissolve. However, since the cube has less surface area exposed compared to powdered sugar, the powdered form will still dissolve more quickly, even with agitation.
The speed at which the sugar dissolves isn't dependent on the type of sugar since both forms have the same chemical composition, but rather on the physical form of the sugar which affects the overall surface area available for dissolution.
What is the main similarity among elements in group 2?
The poh of a solution is 9.32. calculate the hydrogen ion concentration of the solution.
Final answer:
To find the hydrogen ion concentration from the pOH value of 9.32, we first calculate the pH as 4.68. We then use the relationship [H3O+] = 10^-pH to find the hydronium ion concentration, which is approximately [tex]2.09 × 10^-5 M.[/tex]
Explanation:
The student asked about calculating the hydrogen ion concentration of a solution from its pOH. The pOH of a solution is 9.32, and we want to find the [H3O+]ion concentration, also written as [H+].
The relationship between pH, pOH, and ion concentrations in water at 25 °C is given by the equation:
pH + pOH = 14
From the given pOH value, we can find the pH:
pH = 14 - pOH
pH = 14 - 9.32 = 4.68
Once we have the pH, we can calculate the hydronium ion concentration using the inverse of the logarithmic relationship:
[H3O+] = 10-pH
[H3O+] = 10-4.68
The final hydrogen ion concentration, or hydronium ion concentration, is therefore approximately 2.09 × 10-5 M.
Given the equation zn(s) + 2 hcl(aq) → zncl2(aq) + h2(g), what mass of hydrogen gas is produced when 2.8 g zn is reacted with excess aqueous hydrocholric acid?
Final answer:
To calculate the mass of hydrogen gas produced, we use stoichiometry of the chemical reaction between Zn and excess HCl. After determining moles of Zn from the given mass, we find the moles of H2, which is equal due to the 1:1 molar ratio, and then multiply by the molar mass of H2 to get 0.0863 g of hydrogen gas.
Explanation:
Calculating the Mass of Hydrogen Gas
To calculate the mass of hydrogen gas produced when 2.8 g of Zn is reacted with excess hydrochloric acid (HCl), we will use the stoichiometry of the balanced chemical reaction: Zn(s) + 2 HCl(aq) → ZnCl₂ (aq) + H₂(g). The reaction shows that one mole of Zn produces one mole of H2. First, we find the molar mass of Zn, which is approximately 65.38 g/mol.
Step 1: Calculate the moles of Zn.
Moles of Zn = (mass of Zn) / (molar mass of Zn) = 2.8 g / 65.38 g/mol = 0.0428 molStep 2: Determine the moles of H2 formed using the molar ratio from the balanced equation (1:1).
Moles of H2 = Moles of Zn = 0.0428 molStep 3: Calculate the mass of H2 using the molar mass of H2 (approximately 2.016 g/mol).
Mass of H2 = Moles of H2 × Molar mass of H2 = 0.0428 mol × 2.016 g/mol = 0.0863 gTherefore, the mass of hydrogen gas produced is 0.0863 g.
When combined two gases have a pressure of 4.0 atm.if one has a pressure of 1.5 atm , what is the pressure of the second gas?
Which of the following are monomers of the genetic material DNA?
monosaccharides
fatty acids
nucleotides
amino acids
Answer:
Nucleotides
Explanation:
The monomer units of DNA are nucleotides.
What is the total number of moles (n) of electrons exchanged between the oxidizing agent and the reducing agent in the overall redox equation: 5 Ag (aq) +Mn2 (aq) +4H20()5Ag(s)+ MnO4 (aq) +8H' (aq)
a. 1
b. 2
c. 3
d. 5 (
e.?
Which element would you expect to behave the most like carbon (c)? apex?
Answer:Germanium (Ge)
Explanation:
What characteristics are shared by all alkali metals and alkaline earth metals? no answer provided
a. they do not react with water at all.
b. they are strong and shiny.
c. they form alkaline solutions when mixed with water.
d. they conduct electricity very well?
Alkali metals and alkaline earth metals share several characteristics: they react with water to form alkaline solutions, they are shiny and have a metallic appearance, and they conduct electricity well.
Explanation:Alkali metals and alkaline earth metals share several characteristics:
They react with water to form alkaline solutions. Alkali metals like sodium and potassium are highly reactive and can vigorously react with water, releasing hydrogen gas and forming alkaline solutions.They are shiny and have a metallic appearance. Alkali metals and alkaline earth metals are good conductors of heat and electricity, which gives them a shiny and metallic appearance.They conduct electricity well. Both alkali metals and alkaline earth metals are good conductors of electricity due to the presence of loosely held outer electrons.Learn more about characteristics of alkali metals and alkaline earth metals here:https://brainly.com/question/12708549
#SPJ12
Which of the following shows the correct rearrangement of the the heat equation q = mCpΔT to solve for specific heat?
answer is C
Cp-=q/m^T
Answer:
[tex]C_{p} = \frac{q}{m(deltaT)}[/tex]
The midpoint of GH is M(5,3). One endpoint is G(1,-5). Find the coordinates of the other endpoint H.
The coordinates of the other endpoint, H, can be calculated using the midpoint formula: Endpoint = (2 x Midpoint) - Known Endpoint. Applying this formula, we find that the coordinates of endpoint H are (9, 11).
Explanation:The subject of this question is Mathematics, specifically coordinate geometry. Given the midpoint M(5,3) and one endpoint G(1,-5), we're asked to find the coordinates of the other endpoint, H. The formula to find the coordinates of an endpoint when given the midpoint and another endpoint is as follows:
Endpoint = (2 x Midpoint) - Known Endpoint
So, applying this formula, we find H to be:
H = (2x5 - 1, 2x3 - (-5)) = (9, 11).
So the other endpoint H is at (9, 11).
Learn more about Midpoint formula here:https://brainly.com/question/30242630
#SPJ2
Why should you pay attention to the physical states of reactants and products when writing elquilibrium constant expressions?
Which piece of lab equipment is BEST used for storing sulfuric acid for a long period of time? A) soup can B) graduated cylinder C) metal tin with a cover D) glass bottle with a rubber top or stopper
The correct option is D. Glass bottle with a rubber top or stopper Equipment is Best used for storing sulfuric acid for a long period of time.
What is sulfuric acid?Concentrated sulfuric acid is a hygroscopic material that, when in contact with air, absorbs moisture. As a result, it is kept in airtight bottles.
Acid sulfuric (also known as sulphuric acid, battery acid, vitriol, mineral acid and hydrogen sulfate).
The production of fertilizers, pigments, dyes, medicines, explosives, detergents, inorganic salts and acids, as well as petroleum refining and metallurgical operations like plating, anodizing, and steel fabrication all utilize different amounts of acid.
Therefore, The correct option is D. Glass bottle with a rubber top or stopper Equipment is Best used for storing sulfuric acid for a long period of time.
To learn more about sulfuric acid, refer to the link:
https://brainly.com/question/1107054
#SPJ2
What type of air mass most likely located over atlanta and Georgia
Determine the mass of 8.59 ×1023 atoms cl. answer in units of g.
Phytic acid and oxalic acid ________ the absorption of dietary iron.
Which of these has the highest h+ concentration? lemon juice, ph = 2.3 red wine, ph = 3.2 tomato juice, ph = 4.7 household ammonia, ph = 10.8?
Answer:
Lemon juice has the highest [tex]H^+[/tex] concentration.
Explanation:
The pH of the solution id the negative logarithm of hydrogen ion concentration in an aqueous solution.
[tex]pH=-\log[H^+][/tex]
1) Lemon juice with pH = 2.3
[tex]2.3=-\log[H^+][/tex]
[tex][H^+]=0.005011 M[/tex]
2)Wine with pH = 3.2
[tex]3.2=-\log[H^+][/tex]
[tex][H^+]=0.006309 M[/tex]
3)Tomato juice with pH = 4.7
[tex]4.7=-\log[H^+][/tex]
[tex][H^+]=1.99\times 10^{-5} M[/tex]
4)House hold ammonia with pH = 10.8
[tex]10.8=-\log[H^+][/tex]
[tex][H^+]=1.584\times^{-11} M[/tex]
Lemon juice with a pH of 2.3 has the lowest pH value.
What is the pH scale?The pH scale measures the acidity or alkalinity of a solution, with lower pH values indicating higher acidity and higher pH values indicating higher alkalinity.
For this question, we want to find the solution with the highest H+ (hydrogen ion) concentration, which corresponds to the lowest pH value.
Considering all the options given; Lemon juice with a pH of 2.3 has the lowest pH value, indicating the highest H+ concentration.
Therefore, lemon juice has the highest H+ concentration among the given options.
Learn more about pH scale here: https://brainly.com/question/26424076
#SPJ4
Convert to standard notation 7.77x10^-4