There are 60 grams in 3molesof HF.One mole of a substance contains a specific number of particles, calledAvogadro's number.This number is approximately 6.022 × 10²³ particles per mole.Therefore, the mass of one mole of a substance can be determined from itsmolar mass.For example, the molar mass of HF (hydrogen fluoride) is approximately 20 g/mol (1.008 g/mol for hydrogen + 18.998 g/mol for fluorine).Therefore, one mole of HFweighs20 grams.To determine the mass of 3 moles of HF, multiply the molar mass by the number of moles:3 mol HF × 20 g/mol HF = 60 g HFTherefore, there are 60 grams in 3 moles of HF.For more such questions onmolesvisit:brainly.com/question/29367909#SPJ8...

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