Mole to Mole

Mole ratios are obtained from the

• balanced chemical equation
• periodic table
• molar mass

Tags

NGSS.HS-PS1-7

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from  6 moles H₂? 

• 4 moles Fe
• 6 moles Fe
• 9 moles Fe
• 2 moles Fe

Tags

NGSS.HS-PS1-7

N₂ +  3H₂ → 2NH₃ 
How many moles of hydrogen are needed to react with 2 moles of nitrogen?

• 6
• 2
• 3
• 1

Tags

NGSS.HS-PS1-7

2H₂   +   O₂  →  2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

• 4 moles
• 8 moles
• 16 moles
• 2 moles

Tags

NGSS.HS-PS1-7

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from 3 moles of Fe₂O₃?

• 6 moles Fe
• 4 moles Fe
• 2 moles Fe
• 1 moles Fe

Tags

NGSS.HS-PS1-7

2 Mg + 1 Cl₂ > 2 MgCl

How many moles of Cl₂ are required to produce 15 moles of MgCl?

• 30.0 moles of Cl₂

• 15 moles of Cl₂

• 7.5 moles of Cl₂

• 3.25 moles of Cl₂

Tags

NGSS.HS-PS1-7

What is the molar mass of MgCl?

• 24 g

• 35 g

• 70 g

• 94 g

Chlorine shows a subscript 2 when it is in its single form because

• its the second substance

• two is the atomic number

• two refers to the molar mass

• it is because its diatomic, its paired or comes in two's

What is the oxidation number (charge) of Mg?

• +1

• +2

• -2

• +3

Tags

NGSS.HS-PS1-1

Which element in MgCl is a metal?

• Mg

• Cl

• Both

• none

Tags

NGSS.HS-PS1-1