2.6 Calculations involving masses

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Question 37

Relative atomic masses: $H=1\mathrm{H} = 1$ , $C=12\mathrm{C} = 12$ , $N=14\mathrm{N} = 14$ , $O=16\mathrm{O} = 16$ , $S=32\mathrm{S} = 32$ . The Avogadro constant is $mol−16.02\times10^{23}\,\mathrm{mol^{-1}}$ .

Statement 1: The mass of one mole of sulfur dioxide molecules, $SO2\mathrm{SO_{2}}$ , is 32 g.

Statement 2: There are equal numbers of molecules in 17 g of ammonia, $NH3\mathrm{NH_{3}}$ , and 14 g of carbon monoxide, $CO\mathrm{CO}$ .

Statement 3: A sample containing 8.5 g of ammonia contains 1.204 × 10²⁴ atoms in total.

Which statements are correct?

[1]

Statement 3 only

Statements 2 and 3 only

Statements 1 and 3 only

Statement 2 only

Statement 1: The mass of one mole of sulfur dioxide molecules, $SO2\mathrm{SO_{2}}$ , is 32 g.

Statement 2: There are equal numbers of molecules in 17 g of ammonia, $NH3\mathrm{NH_{3}}$ , and 14 g of carbon monoxide, $CO\mathrm{CO}$ .

Statement 3: A sample containing 8.5 g of ammonia contains 1.204 × 10²⁴ atoms in total.

Which statements are correct?

Statements 2 and 3 only

Statements 1 and 3 only

2.6 Calculations involving masses

Question 37

Markscheme

2.6 Calculations involving masses

Question 37

Markscheme

2.6 Calculations involving masses

Question 37

2.6 Calculations involving masses Questions

2.6 Calculations involving masses

Question 37

2.6 Calculations involving masses Questions