because it is easy way to measure the Reactants Mass.

knowing how many representative particles are in a sample.

It allow Chemists to know the chemical formula

It allow chemists to know the substance

atoms , ions , molecules and formula units

atoms , ions , formula unit and molecules

ions , atoms , molecules and formula units

ions , atoms , formula units and molecules

$$\frac{6.00\ \times\ 10^{23}\ particles}{1\ mol}\$$  

$$\frac{6.00\ \times\ 10^{20}\ particles}{2\ mol}\$$  

$$\frac{3.60\ \times\ 10^{47}\ particles}{2\ mol}$$  

$$\frac{999.00\ \times\ 10^{9999}\ particles}{999999\ mol}$$  

$$Cu\ =\ 6.02\ \times\ 10^{23}$$   $$N2\ =\ 6.02\ \times\ 10^{23}$$  

$$Cu\ =\ 3.6\ \times\ 10^{47}$$   $$N2\ =\ 2.6\ \times\ 10^{22}$$  

$$7.20\times10^{24\ }moleculesof\ H20$$ $$1.08\times10^{25\ }\ Atoms\ of\ Ag$$  

$$1.08\times10^{25\ }\ Formula\ units\ of\ Ag\ \$$   $$7.20\times10^{24\ }moleculesof\ H20$$  

$$2.0\times1^{-9\ }mol$$  

$$2.0\times10^9mol$$  

$$6.02\times10^{23}mol$$  

$$6.02\times10^{-23}mol$$  

Xe is larger

Ne is larger

is the mass in grams of one mole of any pure substance

is the mass in grams of 6.00 moles of any pure substance

is the mass in grams of every 12 moles of any pure substance

is the mass in grams of Pure substance , it depends on the question

is when any element is numerically equal to its atomic mass and has a unit of g/mol.

Astrophysics is the study of astronomical objects through the principles of physics. Astrophysicists try to understand the intricacies of our universe by examining things like the sun, solar system, exoplanets, dark matter, black holes, the interstellar medium, and other relevant parts of our cosmology.

is the average mass of the atoms of an element measured

63.55 g/mol.

63.55 grams.

$$6.02\times10^{23}$$  

$$6.02\times10^{-23}$$  

$$\frac{Mass}{Molar\ Mass}$$  

$$\frac{1\ mol}{Molar\ Mass}$$  

$$\frac{1\ \times\ 10^{23}}{Molar\ Mass}$$  

$$\frac{6.02\times10^{23}}{Molar\ Mass}$$  

350 g

265 g

950 g

271 g

1.00 mol

10.00 moles

2.00 moles

6.00 moles

is the total number of atoms present in one mole of an element or compound

element is numerically equal to its atomic mass

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It is equal to 1 mol and it value is $$6.02\times10^{23}$$  

1

2

3

4

15

12

10

17

$$6.0\times10^{23}\ atoms$$  

$$6.0\times10^{23}\ Formula\ Units$$  

$$3\ moles$$  

$$10\ moles$$  

1 mole of C atoms

2 moles of Cl atoms

2 moles of F atoms

1 mole of C atoms

1 moles of Cl atoms

1 moles of F atoms

2 mole of C atoms

1 moles of Cl atoms

1 moles of F atoms

0 mole of C atoms

1 moles of Cl atoms

1 moles of F atoms

8 moles

4 moles

2 moles

1 mol

It is the sum of all moles multiple by molar mass of elements

is the sum of the masses of all elements in that compound

$$\frac{Mass}{Molar\ Mass}$$  

$$6.00\ \times10^{22}\ \left(Molar\ Mass\right)$$  

135.25 grams

136.15 g/mol

136.15 grams

135.25 g/mol

272 g

272 g/mol

373 g

373 g/mol

is the percent by mass of each element in a compound.

s the actual yield divided by the theoretical yield times 100 (to convert to a percentage)

Percentage change equals the change in value divided by the absolute value of the original value, multiplied by 100.

$$\frac{Molar\ Mass}{Mass}\times100$$  

85%

90%

15%

20%

30%

40%

25%

85%

SO2

SO3

SO4

SO5

C12H24O12

CH4O

C2H4O2