Molar Mass and Mole Conversion

mass to mass stoich conversions need which conversion factors?

• mole ratio only

• mole ratio and 1 molar mass

• mole ratio and 2 molar masses

• just molar mass

How many moles of nitrogen react with 3 mol of hydrogen. What type of conversion is this?

• mole to mole

• mole to mass

• mass to mole

• mass to mass

Tags

NGSS.HS-PS1-7

You have 400g of sodium, how many moles of salt will be formed? What type of conversion is this?

• mole to mole

• mass to mole

• mole to mass

• mass to mass

Which molar mass should be used in this conversion: How many grams of magnesium react with 4.5 moles of chlorine to produce magnesium chloride?

• magnesium chloride

• magnesium

• chlorine

• no molar mass used.

Which molar mass is used: If you begin with 300g of NO, how many moles of O₂ will be produced when it breaks down?

• NO

• O₂

• no molar mass needed

• molar mass for both compounds

Tags

NGSS.MS-PS1-5

the units for molar mass always is per _____

• 1 mole

• 2 moles

• the coefficient on the compound number of moles

How many sigfigs should be in your answer to: How many grams of water are formed from 4.0 moles of hydrogen?

• 1

• 2

• 3

• 4

The mass of 1 mole is known as

• A mole

• Molar mass

• Percent Composition

• Grams

Tags

NGSS.HS-PS1-7

Given 5 moles of NaCl, which conversion factor would allow you to determine the number of molecules?

• 1 mol = 58 g

• 1 mol = 23 g

• 1 mol = 35 g

If a dozen = 12, how much does a mole equal?

• 18 g

• 184 g