Question

I’m stuck with mole calculations please help and explain how it works

Answer 1

Step-by-step explanation:

Here, we want to get the mass of 0.510 moles of HCl

We know that 1 mole of HCl has a mass of 36.46g (The molar mass of HCl is 36.46 g/mol)

Thus, in the first field, we fill 36.46g

Now in the others, we have the following:

`0.510\text{ mole }*\frac{36.46g}{1\text{ mole }}\text{ = }18.5946\text{ g}`

Essentially, the formula linking mass, molar mass, and the number of moles is:

`\text{ No of moles = }\frac{mass}{\text{molar mass}}`

Now, in this question, we have the number of moles and the molar mass

To get the mass that the question asks, we have to multiply the number of moles by the molar mass of the compound