Question: 1how many moles of nh42so4 are present in a 285g...

1)How many moles of (NH₄)₂SO₄ are present in a 28.5-g sample?

2)Rank the following samples in mass, from least to greatest. Your response should be a four letter "word" made up of the letters a, b, c and d. For example, if you think a is the lightest, followed by b, c and d (heaviest), your response should be the word abcd (lower case, no spaces, no commas).

a) 2 moles of N₂
b) 1 mole of KCl
c) 9 x 10²³ CO₂ molecules
d) 2 moles of LiF