Math chem

What is the molar mass of CH4? 

• 16 grams/mol 
• 12 grams/mol 
• 13 grams/mol 
• 15 grams/mol 

What is the molar mass of water? 

• 16 grams/mol 
• 15 grams/mol 
• 18 grams/mol 
• 17 grams/mol 

How many grams are 3.50 moles of gold (Au)

• 689 g

• 56.3 g

• 339 g

• 9.35 g

given the following reaction:

2K + Cl₂ ---> 2KCl

how many grams of Potassium is needed to produce 15.0 g of KCl?

• 7.87 g

• 0.199 g

• 28.6 g

• 15.0 g

given the following reaction:

2K + Cl₂ ---> 2KCl

How many moles of KCl would be produced with 3.00 moles of Chlorine gas

• 212.73 g

• 1.5 moles

• 3.00 moles

• 6.00 moles

In the picture, what is the atomic number for Sodium?

• 11
• 22.9
• Na
• none of the above

240 cm = ___________ m

• 2400
• 24
• 2.4
• 0.24

3 km = ___________ mm

• 30
• 300
• 3,000
• 3,000,000

Tags

CCSS.4.MD.A.1

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