How many O atoms are there in 51.4 g CaSO₄?

Question

Quizplus · Accepted Answer

To find the number of O atoms present in the given compound, we need to calculate the moles of CaSO₄ first: Molar mass of CaSO₄ = (1 x 40.08) + (1 x 32.06) + (1 x 32.06) + (14 x 16.00) = 208.28 g/mol Moles of CaSO₄ = 51.4 g / 208.28 g/mol = 0.247 mol As per the formula of CaSO₄, there are 6 O atoms present in each molecule. Therefore, number of O atoms = 6 x 0.247 mol = 1.482 ≈ 9.09 × 10²³ (rounded to three significant figures)

How Many O Atoms Are There in 51