2. Which set of symbols represents isotopes of the same element? Set 2
Set 1
80
м
38
133
81
M
38
83
M
38
132
Q
55
Q
133
Q
54
55
Set 4
Set 3
50
L
19
50
L
20
50
L
21
91
J
43
92
J
42
93
J
42

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?