Grams

Calculate the mass of hydrogen formed when 27 g of aluminum reacts with excess hydrochloric acid according to the balanced equation below. 2Al + 6HCl → 2 AlCl3 + 3 H2

• 1.5 g

• 2.0 g

• 3.0 g

• 6.0 g

• 12 g

Tags

NGSS.HS-PS1-7

How many moles are in 9.8 grams of calcium?

• 0.24 moles

• 4.1 moles

• 1.0 mole

• 390 moles

Tags

NGSS.HS-PS1-7

How many moles are present in 32.3 grams of carbon dioxide (CO₂)?

• 44.0 moles

• 1420 moles

• 32.3 moles

• 0.734 moles

What is the molar mass of Hydrogen, H₂?

• 1.01 moles

• 2.02 grams

• 2.02 g/mol

• 1.01 g/mol

Tags

NGSS.HS-PS1-1

• 14 grams

• 25 grams

• 56 grams

• 22 grams

Tags

DOK Level 3: Strategic Thinking

How many moles is 4 grams of silicon?

• 4 moles

• 0.14 moles

• 28.085 moles

• 1.4 moles

Tags

NGSS.HS-PS1-7

How many moles is 19.5 grams of Sodium?

• 19.5 moles

• 0.85 moles

• 22.99 moles

• 8.5 moles

Tags

NGSS.MS-PS1-1

Mass in grams of one mole of any pure substance.

• percent composition

• empirical formula

• molecular weight

• molar mass

What is the molar mass of Oxygen?

• 8 grams

• 8 moles

• 15.999 grams/mol

• 15.999 moles

Tags

NGSS.MS-PS1-1

How many moles are in 15.0 g of lithium?

• 104 mol

• 2.16 mol

• 6.94 mol

• 15.0 mol