Chemistry High School

Given the reaction below, which is the oxidized substance? Mg + Cl2 mc005-1.jpg Mg2+ + 2Clmc005-2.jpg 2CI- CI2 Mg Mg2+

Answers

Answer 1

The given chemical reaction is:

Mg + Cl₂ → Mg²⁺ + 2Cl⁻

The reaction can be broken down into two half-reactions as follows:

Mg → Mg²⁺ + 2e⁻  ------(1)

Cl₂ + 2e⁻ → 2Cl⁻   ------(2)

Reaction (1) is an oxidation reaction as it involves loss of electrons.

Reaction (2) is reduction reaction as it involves gain of electrons.

The oxidation state of Mg changes from 0 (Mg) to +2 (Mg2+). Hence, Mg is the oxidized substance



Answer 2

Answer:

Mg

Explanation:

Edge

Related Questions

How many electrons does the predictable (most common) ion of calcium contain?

Answers

Answer: 18

Justification:

1) The most common ion of calcium is Ca 2+

2) That means that the atom, neutral calcium, has lost two electrons.

3) The atomic number of calcium is 20.

4) Atomic number is the number of protons, so calcium has 20 protons.

5) Therefore, the neutral atom of calcium also has 20 electrons (to make a net charge of zero).

6) Then, the ion Ca 2+ has 20 - 2 = 18 electrons.

Answer: 18 electrons.

How many neutrons are in an atom of tin? Round your answer to the nearest whole number.

Answers

There are 50 neutrons in and atom of tin.

Answer: 69

Explanation:

As we know that the formula to find the no of neutrons= Atomic mass (A)- atomic number (Z)

No of neutrons (n)=A-Z

n=1189-50

n=69

Which statement describes the Arrhenius interpretation of acids and bases

Answers

it is limited to situations that involve aqueous solutions of specific compounds

I hope this helps

Answer:

It is limited to situations that involve aqueous solutions or specific compounds.

Explanation:

the answer was correct on edge

Tapeworms attach themselves inside the intestines of a pig. the worms then eat the pig's partially digested food. the pig is deprived of nutrients. which type of relationship does this represent?
a. commensalism
b. mutualism
c. competition
d. parasitism

Answers

I believe this is parasitism. A parasitic relationship where one organism, the parasite, lives off of another organism, the host, harming it and possibly causing death. The parasites lives on or in the body of the hosts. Endoparasites live  inside the body of the host, an example is the tapeworm which lives in the body of animals, while ectoparasites live on the body of the host, such as fleas.

The answer to this question is parasitism.

Which of the following are observations?
- The candle floats.
- The tires are flat.
- The dog is barking.
- The tire is flat because of a decrease in temperature.
- If a person walks by, then the dog will bark.

Answers

An observation says nothing about cause; it is simply a description of a phenomenon. The first three are observations. The next two imply cause-effect relationships.
The first three are all observations

Which has the lighter mass one mole of platinum or one mole of zirconium?

Answers

zirconium should be the lighter mass 

What is the relationship between a compound and the elements it is made from? (4 points)

The compound takes on a mixture of properties from the elements.
The compound takes on the properties of the stronger element.
The compound may have properties that are very different from those of the elements.
The compound may have the properties of the most abundant element in the compound.

Answers

Answer:

The compound may have properties that are very different from those of the elements.

Explanation:

For example - common salt, sodium chloride ( NaCl) has very different properties from sodium and chlorine

14 POINTS

SUPER EASY

Hydrochloric acid (HCl) is created by a chemical reaction between hydrogen (H) and chlorine (Cl). Which substance is the product of this reaction?

hydrogen
chlorine
hydrochloric acid

Answers

Hydrochloric acid is created

Answer:

The product of this reaction is the hydrochloric acid

Explanation:

The compounds required to perform a reaction are the reactants, in this case there are two: hydrogen and chlorine.

The resultant compound is denominated the product. In this case, the hydrochloric acid.

The reaction is:

[tex]Cl_2 + H_2 \longrightarrow 2 HCl[/tex]

In which situation would you expect to have the greatest speed assuming all molucules are eaqual?
A- A 20 Liter container that has 5000 molucules
B- A 20 Liter container that has 1000 molucules
C- A 10 Liter container that has 5000 molucules
D- A 10 Liter container that has 1000 molucules

Answers

I think it's A, I hope this helps  

A system at equilibrium is placed under stress by adding more reactant. If this reaction has a small equilibrium constant (Keq), how will the addition of this stress affect the equilibrium of this system.

Question options:

The equilibrium will shift to produce more reactant.

The equilibrium will shift to produce more product.

There is no way to predict how the stress will affect this system without more information.

The reaction will generate more heat.

Answers

The answer is the equilibrium will shift to produce more product. In accordance to Le Chatelier's principle, Q<Keq, this means the equilibrium shifts so that Q increases to equal Keq again, going against the disturbance. The equilibrium frequently tries to undo the given disturbance. To summarize, Since Q<Keq after the stress, Q↑ to answer the stress by creating more products.

If 0.98 moles of BaCl2 are dissolved in enough water to make a 1.2-liter solution, what is the resulting molarity?
A. 0.55 M BaCl2
B. 0.82 M BaCl2
C. 1.2 M BaCl2
D. 0.45 M BaCl2

Answers

Correct Answer: Option B i.e. 0.82 M

Reason:
Given: number of moles of BaCl2 = 0.98, Volume of solution = 1.2 l

Molarity of solution = [tex] \frac{\text{number of moles}}{\text{volume of solution (l)}} [/tex]
                               = [tex] \frac{0.98}{1.21} [/tex]
                               = 0.82 M

 Thus, molarity of the solution is 0.82 M
The answer is B. 0.82 M BaCl2

How to generate the answer:

Let:

n = amount of substance
V = volume of solution

Equation for n:

n (BaCl2) = 0.98 mol. (unit of mole)

Equation for V:

V (solution) = 1.2L

Required:

c(BaCl2) =?

Equation for the whole problem:

c(BaCl2) = n (BaCl2) / V (solution)

c(BaCl2) = 0.98 mol / 1.2L

c(BaCl2) = 0.82 mol/L

= 0.82 M

Thus,

the resulting molarity is 0.82 M BaCl2

The name of the commonly used hardness scale is: specific gravity organic Mohs inorganic

Answers

The Mohs Hardness Scale is by far the most commonly used hardness scale.

It rates minerals on a scale of 1 to 10, with 1 being the softest and 10 being the hardest.

At a 1 on the scale is talc, the softest mineral. At a 5 on the scale is apatite, with a medium value of hardness.  At a 10 is diamond, the hardest mineral. 

A way to discover where a mineral lands on the Mohs scale is to try a scratch test. In this test, you take two minerals and streak one of minerals on the other one to see if it leaves a scratch. If the mineral does leave a scratch, it is harder than the mineral being scratched. If the other mineral instead leaves a scratch on the mineral being used to scratch, the mineral being used to scratch is harder.

Here's an example: If you try to scratch a diamond with some talc, the talc will come away with a rather large scratch as diamond is much harder. Conversely, if you scratch talc with a diamond, the talc will still come away with a scratch because it is much softer than the diamond. You can use trial and error to find the hardness of a mineral if you are not sure.

Answer:

The Mohs Hardness Scale is by far the most commonly used hardness scale.

Explanation:

In the balanced redox reaction: 2 cu(s) + s(s) ® cu2s(s), how many electrons are gained or lost by each copper atom? select one:
a. each copper atom gains two (2) electrons.
b. each copper atom gains one (1) electron.
c. each copper atom loses one (1) electron.
d. each copper atom loses two (2) electrons.

Answers

The answer: C) each copper atom loses one (1) electron.

2Cu + S ⇒ Cu₂S

2Cu⁰ ⇒ 2Cu⁺ + 2e⁻    oxydation

2e⁻ + S⁰ ⇒ S⁻²            reduction 

In the reaction, copper is oxidized and it releases an electron and transfers it to the sulfur atom. In contrast to copper, sulfur is reduced and it receives two electrons.

Answer: Option (c) is the correct answer.

Explanation:

The given reaction equation is as follows.

            [tex]2Cu(s) + S(s) \rightarrow Cu_{2}S(s)[/tex]

The oxidation-reduction half reactions will be as follows.

Oxidation : [tex]Cu(s) \rightarrow Cu^{+} + 1e^{-}[/tex]

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

By balancing the above half reactions, oxidation-half reaction will be as follows.

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

Whereas reduction-half reaction will remain the same.

Hence, it shows that each copper atom is losing one electron to combine with a sulfur atom.

Therefore, we can conclude that each copper atom loses one (1) electron.

What is the total number of neutrons in an atom of 0-18?

Answers

A = mass number, A = protons + neutrons 
Z = atomic number, Z = protons 
neutrons = A - Z 
neutrons = 18 - 8 = 10 

Answer: The number of neutrons in given isotope are 10

Explanation:

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

The isotopic representation of an atom is: [tex]_Z^A\textrm{X}[/tex]

where,

Z = Atomic number of the atom

A = Mass number of the atom

X = Symbol of the atom

We are given:

An isotope having formula:  [tex]_{8}^{18}\textrm{O}[/tex]

Atomic number = Number of protons = 8

Mass number = 18

Number of neutrons = 18 - 8 = 10

Hence, the number of neutrons in given isotope are 10

How many grams are in 1.68 x 1026 molecules of CO2? (molar mass=44.01 g/mol) (Hint: You will need to use your entire stoichiometry flow chart)

Answers

According to Avogadro's law 1 mole contains 6.022 ×10^23 particles
1 mole of carbon = 44.01 g/ mol
Therefore;
 44.01 g = 6.022 ×10^23 molecules
Hence, 1.68×10^26 molecules will have a mass of ;
   (44.01 × 1.68×0^26) / 6.022×10^23
   = 1.228 × 10^4 molecules


Answer:

There is [tex]12277.494g[/tex] of CO2

Explanation:

We know that the molar mass of CO2 is [tex]44.01\frac{g}{mol}[/tex]

This means that in 1 mole of molecules of CO2 is 44.01 g of CO2

In one mole of molecules of any substance there are N molecules where N is defined as the Avogadro number.

[tex]N=AvogadroNumber=(6.02214076).10^{23}[/tex]

Therefore, we can write that

In [tex](6.02214076).10^{23}[/tex] molecules of CO2 (1 mole of CO2) there is 44.01 g of CO2 ⇒

In [tex](1.68).10^{26}[/tex] molecules of CO2 there will be x grams :

[tex]x=\frac{(44.01).(1.68).10^{26}}{(6.02214076).10^{23}}g=12277.494g[/tex]

We answer that in [tex](1.68).10^{26}[/tex] molecules of CO2 there is [tex]12277.494g[/tex] of CO2

which observation would be best evidence of carbon cycling?
A.) water droplets
B.)moving animals
C.)plant growth
D.) dead plants

Answers

its definitely gotta be b im pretty sure

Answer: C.)plant growth

Explanation:

The carbon cycling is a process in which the carbon and it's various organic forms are transformed and delivered to various earth spheres such as biosphere, geospheres, hydrospheres, pedospheres and atmosphere. Carbon is the basic element found in all life forms. The cycling of carbon can best be observed in the plant growth. This is because of the fact that carbon is obtained by the plants in the form of carbon dioxide which is a chief ingredient required for the process of photosynthesis. Photosynthesis is necessary for the plants to produce food in the form of carbohydrates required for the growth and metabolism in plants.

Passing an electric current through a sample of water (H2O) can cause the water to decompose into hydrogen gas (H2) and oxygen gas (O2) according to the following equation. 2H2O mc026-1.jpg 2H2 + O2 The molar mass of H2O is 18.01 g/mol. The molar mass of O2 is 32.00 g/mol. What mass of H2O, in grams, must react to produce 50.00 g of O2? 14.07 23.05 28.14 56.28

Answers

2H2O --> 2H2 + O2
The mole H2O:mole O2 ratio is 2:1
Now determine how many moles of O2 are in 50g: 50g × 1mol/32g = 1.56 moles O2
Since 1 mole of O2 was produced for every 2 moles of H2O, we need 2×O2moles = H2O moles
2×1.56 = 3.13 moles H2O
Finally, convert moles to grams for H2O:
3.13moles × 18g/mol = 56.28 g H2O
D) 56.28

The correct answer is D: 56.31 grams

Explanation: Got 90% on the quiz on edge and got this answer right

The density of a gas containing carbon and oxygen at stp is 1.25g/l. what is the molar mass of this gas? what is its identity?

Answers

1.       In order to prevent the condition called “bends”. He needs to calculate the Molar Mass of the mixture of 10.0% 02, 10.0 % N2 and 80 % He.So the Answer is letter A. Calculate the molar mass of this mixture.How to calculate:Given Numbers : 10.0 % O2                               10.0% N2                               80 % HeMolar Mass = (.10 x 32g / mol.) + (.10 x 28g / mol.) + (.80 x 4g / mol.)                          => 9.2g / mol

Which of the following is not an example of a scientific model?

Answers

Hello, 

Here is your answer:

The proper answer to this question is option B "a data table". Data tables are not examples of scientific models.

Your answer is B.

If you need anymore help feel free to ask me!

Hope this helps!

B. A data table is not an example of a scientific model. Your welcome

A jet engine might use _____.

slow combustion
rapid combustion
respiration
nitrous oxide

Answers

it would use rapid combustion
Rapid combustion I think

Soda is acidic, I need to know what kind of acid soda includes..

My options are:

1. Sulfuric acid - found in batteries and acid rain.

2. Acetic acid - found in vinegar.

3. Citric acid - found in citrus fruits like lemons and limes.

4. Hydrochloric acid - found in stomach acid and many industrial applications.

Please help it’d mean a lot! <3

Answers

In sodas carbon dioxide reacts with water and that crates Carbonic Acid

Onversion of 1 mol of acetyl-coa to 2 mol of co_2 and coa via the citric acid cycle results in the net production of

Answers

You would get 1 mol of FADH2

How many grams of nickel (+2) are required to replace all of the silver when 15.55 grams of AgNO3 are present?

Answers

2AgNO3 + Ni2+  = Ni(NO3)2 + 2Ag+

From the reaction, it can be seen that AgNO3 and Ni2+ has following amount of substance relationshep:

n(AgNO3):n(Ni)=2:1

From the relationshep we can determinate requred moles of Ni2+:

n(AgNO3)=m/M= 15.5/169.87=0.09 moles

So, n (Ni)=n(AgNO3)/2=0.045 moles

Finaly needed mass of Ni2+ is:

m(Ni2+)=nxM=0,045x58.7=2.64g

Object A has a length of 3 cm, a width of 2 cm, and a height of 4 cm. Object B is dropped into a graduated cylinder. It displaces 19 mL of water. The volume of object A is: A. greater than the volume of object B B. less than the volume of object B C. equal to the volume of object B

Answers

hello
the answer is b
have a nice day

Answer:

greater than the volume of object B

Explanation:

What is the oxidation state of each element in the species Mn(ClO4)3? I'm going over oxi-redox reactions from a long time ago and I'm trying to remember properly.
Mn=3+
Cl=7+
and oxygen=2- right?

Answers

The following are the answers:
 =oxygen  equals to a charge of 2-
number of atoms is -24
=Mn equals to the charge of +3
Mn=  3+3x-24=0
let x be the charge of Cl, so:
23-3=3x
20/3=x
=6.67 or 7
x= 7
= Cl has a charge of +7

You are right about your answers

Calculate the molality of a 27.0% (by mass) aqueous solution of nitric acid.

Answers

Final answer:

To calculate the molality of the aqueous solution of nitric acid, you first convert the mass of nitric acid to moles, then divide by the mass of water in kilograms. This gives a resulting molality of 5.86 mol/kg.

Explanation:

The molality of a solution is calculated through the number of moles of solute per kilogram of solvent. To calculate the molality of a 27.0% (by mass) aqueous solution of nitric acid, we first need to determine the number of moles of Nitric acid and the mass of the water. Since the given information is in percantage by mass, we can assume a solution weight of 100g, therefore we have 27g of Nitric Acid and 73g(0.073 kg) of Water.

Step 1: Convert 27g of Nitric Acid to moles. Nitric Acid(HNO3) has a molar mass of about 63.01 g/mol, so that 27g/63.01 g/mol=0.428 mol of HNO3

Step 2: Calculate the molality using the formula molality=n(solute)/m(solvent in kg). So, our molality = 0.428 mol/0.073 kg = 5.86 mol/kg or simply 5.86m.

Learn more about Molality here:

https://brainly.com/question/26921570

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To calculate the molality of a 27.0% nitric acid solution, determine the masses of solute and solvent, calculate the moles of [tex]HNO_3[/tex], convert the mass of the solvent to kilograms, and use the molality formula. The molality of this solution is 5.87 m.

Calculate the molality of a 27.0% (by mass) aqueous solution of nitric acid.

To calculate the molality of a 27.0% [tex]HNO_3[/tex]aqueous solution:

Determine the mass of solute ([tex]HNO_3[/tex]) and solvent (water). For a 100 g solution:

Mass of [tex]HNO_3[/tex]= 27.0 gMass of water = 100 g - 27.0 g = 73.0 g

Calculate the moles of [tex]HNO_3[/tex]. Molar mass of [tex]HNO_3[/tex]= 1.01 g/mol (H) + 14.01 g/mol (N) + 3 x 16.00 g/mol (O) = 63.01 g/mol

Moles of HNO3 = 27.0 g / 63.01 g/mol = 0.4285 mol

Convert the mass of water to kilograms. Mass of water = 73.0 g = 0.073 kg

Calculate the molality. Molality (m) = moles of solute / mass of solvent in kg

Molality = 0.4285 mol / 0.073 kg = 5.87 m

The molality of the 27.0% aqueous solution of nitric acid is 5.87 m.

How many moles of sodium chloride (NaCl) solute are in 155 grams of an 88.5 percent by mass solution?

Answers

Its going to be 2.27 mol NaCl

Which choice is an example of a decomposer? Question 8 options: tree sun fungi bat

Answers

Fungi is an example of a decomposer.

Answer:

fungi is the right answer

Explanation: took the test

What are geometric isomers?

A. compounds that have the same types of atoms arranged in different orders
B. compounds that have the same number of carbon atoms arranged in different orders
C. compounds that have the same atoms arranged in the same order, but with different three-dimensional orientations
D. compounds that have the same atoms arranged in the same order, and have the same three-dimensional orientations

Answers

C. compounds that have the same atoms arranged in the same order, but with different three-dimensional orientations.

Geometric isomers are compounds with the same atomic and bond composition but different spatial arrangements of the component atoms.

Geometric isomers

They are chemical compounds with the same chemical formula, the same atom/number of atoms with their respective bonds, but different arrangements of the atoms in space.

In other words, they are compounds with the same formula but different geometry of atoms.

When identical ligands are placed in the adjacent positions in geometric isomers, cis is used. When the ligands are in opposite positions, trans is used.

More on geometric isomers can be found here: https://brainly.com/question/13422357

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Which would you expect to experience a greater effective nuclear charge? which would you expect to experience a greater effective nuclear charge? a 2p electron of an atom a 3s electron of a na atom?

Answers

Answer: in atom of sodium (Na) you would expect that a 2p electron experience a greater effective nuclear charge.

Explanation:

 
The effective nuclear charge, Zefff, is the net positive charge experienced by an electron in an atom with more than one electron.

The outer electrons of an atom with several or many electron are simultaneously attracted to the protons in the nucleus and repelled by the negatively charged electrons.

The effective nuclear charge on that electron is calculated using this equation:

Z eff = Z − S, where Z is the number of protons in the nucleus (atomic number), and S is the average number of electrons between the nucleus and the electron in question (the number of non-valence electrons).

For sodium (Na) atomZ is 11, and the electron configuration of the sodium (Na) atom is:

Na (Z=11) : 1s^2 2s^2 2p^6 3s^1

So, the effective nuclear charge of the electrons in the 2p orbitals is greater than the effective nuclear charge of the electron in 3s, given that the there are 10 electrons closer to the nucleus  than the electron in the 3s orbtial, while there are only 4 electrons closer to the nucleus than the 2p electrons.

This is, for a given atom, the further away is one electron from the nucleus the less the effective nuclear charge. That is what is happening with the 3s electron, which is a valence electron.

Answer:

A 2p electron of a Ne atom

Explanation:

Mastering chemistry

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