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What is the relative formula mass of sulfuric acid, H₂SO₄? The relative atomic mass, A₄, of H is 1.0, of S is 32.1 and of O is 16.0. - OCR Gateway - GCSE Chemistry: Combined Science - Question 4 - 2019 - Paper 3

Question 4

What is the relative formula mass of sulfuric acid, H₂SO₄? The relative atomic mass, A₄, of H is 1.0, of S is 32.1 and of O is 16.0.

Worked Solution & Example Answer:What is the relative formula mass of sulfuric acid, H₂SO₄? The relative atomic mass, A₄, of H is 1.0, of S is 32.1 and of O is 16.0. - OCR Gateway - GCSE Chemistry: Combined Science - Question 4 - 2019 - Paper 3

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Answer

To calculate the relative formula mass of sulfuric acid (H₂SO₄), we need to sum the relative atomic masses of all the atoms in the formula:

Hydrogen: There are 2 hydrogen atoms, so the total mass from hydrogen is:

$2 \times 1.0 = 2.0$
Sulfur: There is 1 sulfur atom, so the total mass from sulfur is:

$1 \times 32.1 = 32.1$
Oxygen: There are 4 oxygen atoms, so the total mass from oxygen is:

$4 \times 16.0 = 64.0$

Now, summing these values together gives us:

$2.0 + 32.1 + 64.0 = 98.1$

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