Will give brainliest and 20 points!
calculate the number of moles of the indicated substance in each of the following samples.
a. 49.2 mg of sulfur trioxide 6.14 x 10-4 mol so3
b. 7.44 x 104 kg of lead(iv) oxide
c. 59.1 g of chloroform, chcl3
d. 3.27 mg of trichloroethane, c2h3cl3
e. 4.01 g of lithium hydroxide