Two Step Mole Conversions

Shivani measures out 6.0 moles of epsom salt (MgSO₄) to put in her bath. How many grams of MgSO₄ went in the bath?

• 3.6 x 10²⁴ g

• 720 g

• 0.050 g

• 340 g

Tags

NGSS.HS-PS1-7

Convert 86.235 g of diphosphorus pentaoxide to moles.

• 12240 moles

• 1.8747 moles

• .608 moles

• .60755 moles

How do we get mass from moles?

• multiply by avogadro's number

• multiply by molar mass

• divide by avogadro's number

• divide by molar mass

From the video, what does "excess air" mean

• That there isn't enough air, we need to worry about it.

• That there is more than enough air, we don't even have to consider it.

Find the mass of 3.6 mol of Au.

• 843.6 g

• 709.2 g

• 435.9 g

• 196.9 g

Tags

NGSS.HS-PS1-7

Avogadro's number of representative particles is equal to one_____

• kilogram

• gram

• kelvin

• mole

Tags

NGSS.HS-PS1-7

Which conversion factor should be used for the following question " How many molecules are there in 4.00 moles of glucose, C₆H₁₂O₆? 

• mole = 78.12 g

• mole = 22.4 L 

• mol = 6.02x 10²³ particles 

• more than one

I use mole to mole ratio (coefficients) from balanced chemical equation to convert Compound A into Compound B?

• True

• False

Tags

NGSS.HS-PS1-7

If we have 10 g of O₂, how many grams of H₂O can we make? Place the parts of the setup of a gram to gram conversion in the correct position.

a

b

c

d

e

f

1 mol H₂O

32 g O₂

10 g O₂

2 mol H₂O/1 mol O₂

18.02 g H₂O

1 mol O₂

Tags

NGSS.HS-PS1-7

How many steps will it take me to convert units from grams of compound A to grams of compound B?

• 4

• 3

• 2

• 1