Mass, Moles, and Particles

What is the mass of one mole of (NH₄)₂CO₃?

• 144g

• 138g

• 96g

• 74g

4.0 moles of H₂O would have what mass?

• 72 g

• 23 g

• 68 g

• 4.5 g

A mass of 6 g of Carbon contains

• mole of C

• moles of C

• moles of C

• moles of C

Tags

NGSS.HS-PS1-7

Given the equation: 2NaClO₃ (s) → 2NaCl (s) + 3O₂ (g) 2.00 moles of NaClO₃ will produce how many grams of O₂? (mass of O₂ = 32g/mol)

• 56 g of O₂

• 96 g of O₂

• 64 g O₂

• 32 g O₂

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

2Na + 2H₂O → 2NaOH+ H₂
How many grams of hydrogen are produced if 120 g of Na are available?

• 5.27 g

• 2.6 g

• 690 g

• 45 g

Tags

NGSS.HS-PS1-7

2H₂  +   O₂    −−〉 2H₂O
How many grams of H₂O can be produced from 3.91 g of O₂? 

• 905

• 4.4

• 2.2

• 1.1

Tags

NGSS.HS-PS1-7

How many moles are in 22 g of argon? 

• 880 moles

• 0.55 moles

• 1.81 moles

• 5 moles

How many moles are in 9.8 grams of calcium? 

• 0.2 moles

• 4.1 moles

• 1 mole

• 392 moles

How many particles are in 13.5 grams of Beryllium?

• 5 particles

• 9 particles

• 4x10²³ particles

• 9x10²³ particles