Question

What is the mass of 1.75 moles of HF?

Answer 1

The mass of 1.75 moles of hydrogen fluoride (HF) can be found by multiplying the number of moles (1.75) by the molar mass of HF (20.006 g/mol), which equals 35.0105 grams.

Step-by-step explanation:

The mass of 1.75 moles of HF can be calculated by using the molar mass of hydrogen fluoride. The mass of one mole of HF is equal to the sum of the atomic masses of hydrogen (1.008 g/mol) and fluorine (18.998 g/mol), which equals 20.006 g/mol. Therefore, the mass of 1.75 moles of HF is calculated by multiplying the number of moles by the molar mass:

1.75 moles × 20.006 g/mol = 35.0105 g

The correct mass of 1.75 moles of HF is 35.0105 grams.

Answer 2

Mass = 35.02 g

Step-by-step explanation:

Given data:

Number of moles = 1.75 mol

Mass of HF = ?

Solution:

Formula:

Mass = number of moles × molar mass

Molar mass of HF = 20.01 g/mol

by putting values,

Mass = 1.75 mol × 20.01 g/mol

Mass = 35.02 g