Chemistry · May / June 2020 · Paper 11 · Question 13
5070The mole and the Avogadro constant
A chicken egg has a mass of 60 g. The egg shell is 10% of the total mass. The egg shell is made of calcium carbonate. What is the mass of calcium in the egg shell?
- A0.24 g
- B0.40 g
- C2.4 g
- D4.0 g
As printed in the paper
Show the answer
Correct answer: C. 2.4 g
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.