# Molecular Mass

## Molecular mass measures the mass of a molecule. It is measured by adding together the atomic masses of atoms the molecule is made of.

###### 1,424 Questions
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many moles in 4.96 x 1024 molecules of glucose?

4,96 x 1024 molecules of glucose is equal to 8,236 moles.

012
Chemistry
Atoms and Atomic Structure
Molecular Mass

# According to the ideal gas law what happens to the volume of a gas when the number of moles doubles?

The volumes doubles

456
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many moles of water can be produced by burning 325g of octane in excess oxygen?

Balanced equation: 2C8H18 + 25O2 ==> 16CO2 + 18H2O
moles of octane used: 325 g x 1 mole/114g = 2.85 moles octane
moles H2O produced: 18 moles H2O/2 moles C8H18 x 2.85 moles C8H18 = 25.65 moles H2O

012
Chemistry
Molecular Mass

# What concentration unit is measured in moles of a solute per kilogram of solvent?

Mol is a cocentration unit !

012
Chemistry
Atoms and Atomic Structure
Molecular Mass

# What is the number of moles in 510 g of Al2S3?

510 g Al2S3 is equal to 3,396 moles.

123
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many moles of copper must react to form 3.50 mol of Ag?

Copper form alloys with silver.

012
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many moles of C2H6 are in 124 grams?

124 grams of ethane is equal to 4,124 moles.

012
Chemistry
Atoms and Atomic Structure
Molecular Mass

# If 3 moles of a compound use 24 J of energy in a reaction what is the H reaction in J mol?

If 3 moles of a compound use 24 J of energy in a reaction, the H reaction is 8 J/mol.

456
Chemistry
Atoms and Atomic Structure
Molecular Mass

# What information In a balanced chemical equation shows how many moles of a reactant are involved in the reactant?

In a balanced chemical equation the number of molecules or atoms are specified.

012
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many moles of hydrogen are in C2H6?

Ethane contain 20 % hydrogen.

012
Chemistry
Elements and Compounds
Molecular Mass

# How do you find the mass in grams of atoms in an element?

A mole of any element has 6,022 140 857.e23 atoms.

Mass of one atom is atomic weight/6,022 140 857.e23.

001
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many moles of lithium fluoride are in an 85.2 gram sample?

85.2 gram LiF sample is equivalent to 3,28 moles.

012
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How much moles does 53.2g of palladium contain?

53,2 g of palladium contain 0,5 moles.

012
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many moles of gold Au are in 3.60X10-5 of gold?

If 3,6 x 10-5 is grams the number of atoms is 1,1.10e17.

012
Molecular Mass

# A molecule of water is composed of two atoms of hydrogen and one atom of oxygen if the atomic mass number of hydrogen is 1 and the molecular mass of water is 18 the atomic mass of oxygen must be?

16

001
Chemistry
Atoms and Atomic Structure
Molecular Mass

# What concentration unit is measured in moles of solute per kilogram of solvent?

The unit is mol/kg; molality is not a unit, it is a measure of concentration.

111213
Chemistry
Molecular Mass

# How many moles of KCl would be dissolved in 4 liters of water to make 2 Molar solution?

8 moles of KCl are needed.

123
Earth Sciences
Weight and Mass
Atomic Mass
Molecular Mass

# What is the mass of a house key in grams?

91.62304965799 i think no its wrong

001
Molecular Mass

# What is the molecular mass of c6h12o6?

C6H12O6 is the molecular formula for sugar (glucose).

Molecular mass/ molecular weight = (Number of C atoms) (Atomic weight of C) +

(Number of H atoms) (Atomic weight of H) +

(Number of O atoms) (Atomic weight of O) = (6) (12) + 12 (1) + 6 (16) = 180 (g/mole)

567
Molecular Mass

# What is the molecular mass of washing soda?

mass of Na2CO3 with 10H2O of crystallisation is 286g

111213
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many volkswagens are there in 2 moles of volkswagens?

2 x Avogadro's number. It should be noted that 2 moles of VW Beetles would have a mass over 250 times greater than that of the entire Earth.

012
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many grams of carbon dioxide are present in a sample containing 80.0 moles of CO2?

80,0 moles of CO2is equal to 3 520,8 g.

012
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many moles are there in 22 grams of argon?

22 grams of argon is equivalent to 0,55 moles.

012
Chemistry
Atoms and Atomic Structure
Molecular Mass

# How many moles are in 63.60 g sample of carbon?

63,60 g sample of carbon is equivalent to 5,296 moles.

012
Molecular Mass