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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.

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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

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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

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Chemistry
Molecular Mass

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

Mol is a cocentration unit !

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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.

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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.

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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.

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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.

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Chemistry
Atoms and Atomic Structure
Molecular Mass

How many moles of hydrogen are in C2H6?

Ethane contain 20 % hydrogen.

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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.

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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.

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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.

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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
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
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)

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Molecular Mass

What is the molecular mass of washing soda?

mass of Na2CO3 with 10H2O of crystallisation is 286g

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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

What is the molecular mass of nitric acid?

63.08 g/mol I got that by adding the molar mass of one atom of hydrogen, 1.01 g/mol, one atom of nitrogen, 14.07 g/mol, and 3 atoms of oxygen, 16 g/mol each.

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