It is the 3rd option. Theories must be substantiated by a large amount of evidence and previous research
Ca=40
C=12
O=16
1 mole of CaCO3 has 100 grams
So 50 grams is 0.5 mole
<span>B. type of matter that we cannot see but that we believe makes up more than 20% of the universe C. matter made of ordinary atoms, such as hydrogen or helium atoms </span>
The answer to this question is 37
Answer B: The water is touching the bottom of the pan, but not the heat source.
