Stoic

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.0500 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5.00 moles

How many molecules are in 2.00 moles of H2O?

• 12x10²⁴ molecules of H₂O

• 1.20x10²³ molecules of H₂O

• 1.20 x10²⁴ molecules H₂O

• 124

The ratio between the amounts of moles of any two substances involved in a chemical reaction

• mole ratio

• molar mass

• conversion factor

• units

Tags

NGSS.HS-PS1-7

Mole ratio of zinc to hydrochloric acid

1 Zn + 2 HCl --> 1 H₂ + 1 ZnCl₂

• 1 to 2

• 1 to 1

• 2 to 1

• 2 to 2

Tags

NGSS.MS-PS1-5

mole to mole stoich conversions need which conversion factors?

• molar mass only

• molar mass and mole ratio

• mole ratio only

• 2 molar mass and 1 mole ratio

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

How many grams of HCl will be formed from 300 g of hydrogen. What type of conversion is this?

• mole to mole

• mass to mole

• mole to mass

• 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

True or false: You always use mole ratio to convert stoichiometry problems.

• true

• false

Tags

NGSS.HS-PS1-7