Question

How many moles of CaSO₄ are in 5.53 × 10^24 formula units?

a) 1 mole
b) 2 moles
c) 3 moles
d) 4 moles

Answer 1

By dividing 5.53 × 1024 formula units of CaSO4 by Avogadro's number, we find that there are approximately 9.18 moles of CaSO4. However, this answer does not match the multiple-choice options given, indicating there may be a mistake in the question.

Step-by-step explanation:

To calculate how many moles of CaSO4 there are in 5.53 × 1024 formula units, we use Avogadro's number, which is 6.022 × 1023 formula units per mole:

1. Divide the given number of formula units by Avogadro's number:
2. 5.53 × 1024 formula units ÷ 6.022 × 1023 formula units/mole = 9.18 moles of CaSO4.

However, since the options provided do not include the value of 9.18 moles, it is possible that there has been a misunderstanding or typo in the question. If the options were intended to be correct, perhaps a more accurate number for the formula units should have been provided.