Question

Question 6 (1 point)

You have 45g of Hydrogen Fluoride (HF). This is equal to having
particles of HF.
a
b
C
d
1.35x10^24
2.70x10^23
6.02x10^23
1.65x10^22

Answer 1

The number of particles in 45g of hydrogen fluoride (HF) is 1.355x10^24 particles. The correct answer is option a.

Step-by-step explanation:

The molar mass of hydrogen fluoride (HF) is 20.01 g/mol. To find the number of particles in 45g of HF, we need to calculate the number of moles using the formula:

moles = mass (g) / molar mass (g/mol)

moles = 45g / 20.01 g/mol = 2.249 moles

Since 1 mole of any substance contains 6.02x10^23 particles (Avogadro's number), the number of particles in 45g of HF is:

particles = moles x Avogadro's number

particles = 2.249 moles x 6.02x10^23 particles/mol = 1.355x10^24 particles of HF