Count particles with the Avogadro constant
11th grade (Year 12 in England) · 16 questions · Common Core: NGSS.HS-PS1-7 · England: GCSE Combined Science: Quantitative chemistry (Higher)
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Question 1
How many atoms in total are in 0.5 mol of O₂? (Avogadro constant = 6.02 × 10²³ per mol) Give your answer as a number × 10²³ (to 2 decimal places).
Answer
Question 2
A sample contains 3.01 × 10²³ molecules. How many moles is this? (Avogadro constant = 6.02 × 10²³ per mol)
Answermol
Question 3
How many carbon atoms are in 0.5 mol? The Avogadro constant is 6.02 × 10²³ per mol. Give your answer as a number × 10²³ (to 2 decimal places).
Answer
Question 4
How many atoms in total are in 2 mol of H₂O? (Avogadro constant = 6.02 × 10²³ per mol) Give your answer as a number × 10²³ (to 2 decimal places).
Answer
Question 5
A sample contains 6.02 × 10²⁴ molecules. How many moles is this? (Avogadro constant = 6.02 × 10²³ per mol)
Answermol
Question 6
How many water molecules are in 3 mol? The Avogadro constant is 6.02 × 10²³ per mol. Give your answer as a number × 10²³ (to 2 decimal places).
Answer
Question 7
How many atoms in total are in 2 mol of NH₃? (Avogadro constant = 6.02 × 10²³ per mol) Give your answer as a number × 10²³ (to 2 decimal places).
Answer
Question 8
A sample contains 2.408 × 10²⁴ molecules. How many moles is this? (Avogadro constant = 6.02 × 10²³ per mol)
Answermol
Question 9
How many oxygen molecules are in 2 mol? The Avogadro constant is 6.02 × 10²³ per mol. Give your answer as a number × 10²³ (to 2 decimal places).
Answer
Question 10
How many atoms in total are in 0.5 mol of O₂? (Avogadro constant = 6.02 × 10²³ per mol) Give your answer as a number × 10²³ (to 2 decimal places).
Answer
Question 11
A sample contains 3.01 × 10²⁴ molecules. How many moles is this? (Avogadro constant = 6.02 × 10²³ per mol)
Answermol
Question 12
How many oxygen molecules are in 2 mol? The Avogadro constant is 6.02 × 10²³ per mol. Give your answer as a number × 10²³ (to 2 decimal places).
Answer
Question 13
How many atoms in total are in 1 mol of H₂O? (Avogadro constant = 6.02 × 10²³ per mol) Give your answer as a number × 10²³ (to 2 decimal places).
Answer
Question 14
A sample contains 6.02 × 10²² molecules. How many moles is this? (Avogadro constant = 6.02 × 10²³ per mol)
Answermol
Question 15
How many carbon atoms are in 5 mol? The Avogadro constant is 6.02 × 10²³ per mol. Give your answer as a number × 10²³ (to 2 decimal places).
Answer
Question 16
How many atoms in total are in 0.5 mol of CH₄? (Avogadro constant = 6.02 × 10²³ per mol) Give your answer as a number × 10²³ (to 2 decimal places).
Answer
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