4.b Practice: Dimensional Analysis

What is the "given" in this problem?

• 60 min
• 15 yr
• 356 day in 1 year
• 24 hr in 1 day

What is the end unit?

• year
• day
• hour
• min

Can you answer how many hours in 15 years with this set up?

• Yes
• No

How many hours in 15 years?

• 5, 475
• 24
• 131, 400
• 240,567

What question does this solve?

• How many hours in a day?
• How many seconds in a day?
• How many hours in 1 sec?
• how many days in 1 sec?

What is the "given"?

• 17 g NH₃

• 1 mol NH₃

• 1 mol H₂

• 2 mol H₂

Tags

NGSS.HS-PS1-7

What is the end unit?

• mol H₂

• g NH₃

• mol NH₃

• g H₂

Tags

NGSS.HS-PS1-7

What question does this solve?

• How many moles in 1 mol NH₃?

• How many grams in 1 mol H₂?

• How much does 1 mol H₂ weigh?

• How many moles in 17g NH₃?

Tags

NGSS.HS-PS1-7

Now solve it, how many grams of NH₃ are produced with 1 mole of H₂?

• 51g

• 17g

• 25.5g

• 1 mol NH₃

Tags

NGSS.HS-PS1-7

Is this dimensional analysis set up correct?

• Yes

• No

Tags

NGSS.HS-PS1-7