Question 1
Give the formula for cobalt(II) chlorate dihydrate
◦ CoCl
2·2H
2O
◦ CoClO
3(H
2O)
2◦ Co(ClO
3)
2(H
2O)
2◦ Co(ClO
3)
2·2H
2O
◦ Co
2(ClO
3)
3·2H
2O
Question 2
Give the number of protons (p), neutrons (n), and electrons (e) in one atom of
238U.
◦ 146 p, 92 n, 92 e
◦ 92 p, 92 n, 92 e
◦ 92 p, 146 n, 92e
◦ 146 p, 28 n, 146 e
◦ 238 p, 146 n, 238 e