Relative formula mass
10th grade (Year 11 in England) · 16 questions · Common Core: NGSS.HS-PS1-7 · England: KS4 Combined Science: Chemical changes (quantitative chemistry)
Name
Date
Score/ 16
Question 1
Calculate the relative formula mass (Mr) of NaOH. Relative atomic masses: Na = 23, O = 16, H = 1.
Answer
Question 2
What is the percentage by mass of hydrogen in H₂O? Relative atomic masses: H = 1, O = 16. Give 1 decimal place.
Answer%
Question 3
Calculate the relative formula mass (Mr) of sodium hydroxide, NaOH. Relative atomic masses: Na = 23, O = 16, H = 1.
Answer
Question 4
Calculate the relative formula mass (Mr) of H₂O. Relative atomic masses: H = 1, O = 16.
Answer
Question 5
What is the percentage by mass of chlorine in NaCl? Relative atomic masses: Na = 23, Cl = 35.5. Give 1 decimal place.
Answer%
Question 6
Calculate the relative formula mass (Mr) of ethanol, C₂H₅OH. Relative atomic masses: C = 12, H = 1, O = 16.
Answer
Question 7
Calculate the relative formula mass (Mr) of NH₃. Relative atomic masses: N = 14, H = 1.
Answer
Question 8
What is the percentage by mass of carbon in CH₄? Relative atomic masses: C = 12, H = 1. Give 1 decimal place.
Answer%
Question 9
Calculate the relative formula mass (Mr) of hydrogen chloride, HCl. Relative atomic masses: H = 1, Cl = 35.5.
Answer
Question 10
Calculate the relative formula mass (Mr) of CH₄. Relative atomic masses: C = 12, H = 1.
Answer
Question 11
What is the percentage by mass of calcium in CaCO₃? Relative atomic masses: Ca = 40, C = 12, O = 16. Give 1 decimal place.
Answer%
Question 12
Calculate the relative formula mass (Mr) of ethanol, C₂H₅OH. Relative atomic masses: C = 12, H = 1, O = 16.
Answer
Question 13
Calculate the relative formula mass (Mr) of CO₂. Relative atomic masses: C = 12, O = 16.
Answer
Question 14
What is the percentage by mass of hydrogen in CH₄? Relative atomic masses: C = 12, H = 1. Give 1 decimal place.
Answer%
Question 15
Calculate the relative formula mass (Mr) of calcium carbonate, CaCO₃. Relative atomic masses: Ca = 40, C = 12, O = 16.
Answer
Question 16
Calculate the relative formula mass (Mr) of CH₄. Relative atomic masses: C = 12, H = 1.
Answer
All done? Color in the animal! · Free from eurekami.com/math