# Moles

## Quiz by Mrs E Laxton

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15 questions

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- Q1What is Avogadro's constant?6.022 x 10^233.14152.7189.8066530s
- Q2Which of the following is a unit used to measure the amount of substance?KilogramMoleSecondMeter30s
- Q3What is the molar mass of carbon (C)?12.01 g/mol16.00 g/mol22.99 g/mol1.008 g/mol30s
- Q4What is the mole ratio of hydrogen to oxygen in water (H2O)?3:11:22:11:130s
- Q5What is the molar mass of oxygen (O)?12.01 g/mol16.00 g/mol1.008 g/mol22.99 g/mol30s
- Q6How many moles of carbon dioxide (CO2) are present in 44 grams of carbon dioxide?3 moles0.5 moles2 moles1 mole30s
- Q7What is the formula for calculating moles?moles = pressure × volumemoles = mass / molar massmoles = volume × molaritymoles = concentration / volume30s
- Q8What is the mole ratio of hydrogen to nitrogen in ammonia (NH3)?2:11:33:11:130s
- Q9What is the mass of 0.5 moles of water (H2O) if the molar mass is approximately 18 g/mol?9 g36 g4.5 g18 g30s
- Q10If 3 moles of sodium chloride (NaCl) have a mass of 174.6 g, what is the molar mass?58.4 g/mol58.2 g/mol58.6 g/mol57.9 g/mol30s
- Q11How many moles are in 50 grams of Water (H2O)? (Given: Molar mass of H = 1 g/mol and O = 16 g/mol)2.50 moles1.56 moles2.78 moles3.12 moles30s
- Q12How many moles are there in 60g of Carbon (C)? (Given: Molar mass of C = 12 g/mol)3 moles5 moles4 moles2 moles30s
- Q13What is the mass in grams of 3 moles of oxygen gas (O2)? (Given: Molar mass of O = 16 g/mol)32 grams48 grams64 grams96 grams30s
- Q14What is the mass in grams of 5 moles of Nitrogen gas (N2)? (Given: Molar mass of N = 14 g/mol)120 grams90 grams140 grams70 grams30s
- Q15How many moles are in 98 grams of Sulfuric acid (H2SO4)? (Given: Molar mass of H = 1 g/mol, S = 32 g/mol and O = 16 g/mol)0.5 mole1.5 moles1 mole2 moles30s