Al( OH )3 = 27 + ( 16 + 1 ) × 3 = 78
Ca3 ( PO4 )2

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5