All categories

3 years ago

Approximately how many moles of chlorine make up 1.79 x 10^23 atoms of chlorine?

Chemistry

1 answer:

laila [671]3 years ago

6 0

<h2>Answer</h2>

The answer of given question is 0.13 mol

<h2>Explanation</h2>

1 mol of chlorine (Cl) contain = $6.022^{23} N_{A} atoms$ atoms (Avogadro Number)

So, we have to determine how many moles of Cl will be contain for $0.79 * 10^{23} N_{A}$ atoms.

As we know unit method

$6.022^{23} N_{A} = 1 mol of chlorine (Cl)$

$1 N_{A} atom = 1/6.022^{23} N_{A}$ }

$0.79 * 10 ^{23} N_{A} = 1 mol * 0.79^{23} N_{A}/6.022^{23} N_{A}$

$0.79* 10 ^{23} N_{A} = 0.13 mol$

So, the answer is 0.13 mol

You might be interested in

In the formation of potassium chloride, the product, KCl, has less energy than the reactants, K and Cl2. This reaction is .

k0ka [10]

if the product has lesser energy than the reactants it means enthalpy change value is positive.so it is endothermic reaction where the heat is absorbed.so kcl will formation will have positive enthalpy change .

7 0

3 years ago

Which of these are examples of physical changes? Check all that apply. burning wood freezing water cutting paper iron rusting mi

rodikova [14]

Cutting paper
freezing water
mixing water
acetone

5 0

3 years ago

Read 2 more answers

What is required in order to determine whether or not an object moves?

AysviL [449]

Answer:

A reference point.

Explanation:

Reference point:

A reference point is a point which is used to determine weather the object is in motion or not. The moving object is compared with the reference point.

An object is in the state of motion when its distance is changed relative to the other object or reference point.

In order to determine weather an object is moving or not a point of reference is needed.

Without reference point displacement can not be measured

3 0

3 years ago

Read 2 more answers

Which of the following is a nonpolar molecule?

mylen [45]

<u>Answer:</u> The correct option is A) a nitrogen molecule.

<u>Explanation:</u>

Polar covalent molecules are defined as chemical compounds in which the difference in electronegativity between the atoms is not equal to 0. These molecules are formed by heteronuclear molecules.

Heteronuclear molecules are defined as the molecules which are formed by the combination of more than one type of atom having a different nucleus.

Non-polar covalent molecules are defined as chemical compounds in which the difference in electronegativity between the atoms is equal to 0. These molecules are formed by homonuclear molecules.

Homonuclear molecules are defined as the molecules which are formed by the combination of one type of atom having the same nucleus.

From the given options:

A) A nitrogen molecule

It is a homonuclear molecule formed by the combination of 2 nitrogen atoms

B) A nitrogen monoxide molecule

It is a heteronuclear molecule formed by the combination of 1 nitrogen and 1 oxygen atoms

C) A linear nitrogen oxide molecule $(N_2O)$ with nitrogen in the center

It is a heteronuclear molecule formed by the combination of 2 nitrogen and 1 oxygen atom and has some dipole moment. Thus, is considered a polar molecule

D) A bent nitrogen dioxide molecule $(NO_2)$ with nitrogen in the center

It is a heteronuclear molecule formed by the combination of 1 nitrogen and 2 oxygen atoms and has some dipole moment. Thus, is considered a polar molecule

Hence, the correct option is A) a nitrogen molecule.

6 0

3 years ago

The periodic table of the elements lists the elements in order of increasing atomic number. Each element has its own unique squa

Vesna [10]

Answer:

A) They all have 12 protons.

Explanation:

Magnesium has an atomic number of 12 which means it has 12 protons. All Magnesium atoms have 12 protons, the neutrons however may differ which produces things called isotopes where the atoms have same protons but neutrons change.

Keep in mind the atomic number is unique to each element, so 12 atomic number will always be Magnesium, 1 will always be Hydrogen and so on.....

6 0

3 years ago