Determine the amount of substance 25.5 grams of hydrochloric acid.
| April 8, 2021 | education
One mole of hydrochloric acid (HCl) equals a mass of 36.5 grams / mole. We have only 25.5 grams of substance, which means we add up the proportion: 36.5 grams – 1 mol, and 25.5 grams – X. Hence X = 25.5 * 1 / 36.5; X = 0.69. Hydrochloric acid weighing 25.5 grams contains 0.69 mol of the substance.
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