Question

0.5 moles of Sr(OH)2 is how many formula units?

a) 3.01 x 10^23 formula units
b) 1.51 x 10^23 formula units
c) 6.02 x 10^23 formula units
d) 3.0 x 10^23 formula units

Answer 1

To find the number of formula units of Sr(OH)2, multiply the number of moles by Avogadro's number.

Step-by-step explanation:

To determine the number of formula units, you need to use Avogadro's number and the given number of moles of Sr(OH)2.

Avogadro's number is approximately 6.02 x 10^23 formula units per mole. So, if you have 0.5 moles of Sr(OH)2, you can multiply it by Avogadro's number to find the number of formula units:

0.5 moles x 6.02 x 10^23 formula units/mole = 3.01 x 10^23 formula units

Therefore, the correct answer is a) 3.01 x 10^23 formula units.