Question

37)How many grams of NaCl would you need in order to have the same number of moles

Answer 1

mass of NaCl = 87.66 g

Explanation:

First we find the number of moles of HCl in the 1.5 mol/L solution considering that we have 1 L of solution, using the following formula:

molar concentration = number of moles / volume (L

number of moles = molar concentration × volume (L)

number of moles of HCl = 1.5 moles

Now we need to find the mass, in grams, of 1.5 moles of NaCl. To do this we use the following formula:

number of moles = mass / molar weight

mass =  number of moles × molar weight

mass of NaCl = 1.5 × 58.44

mass of NaCl = 87.66 g

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molar concentration

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