The answer should be a) always six. The chemical reaction is the process of molecule break down and form again. So the molecule will change but the atom will not change both type and number.
Answer:
B
Explanation:
Coal is a non-renewable resource, so the supply can't produce faster than we can mine it.
What grade is this? I forgot but if u tell me the grade i can prob remember
B. 1, 1, 1, 2
Explanation:
You only need to balance the NaNO3 on the right. Since there is 2 NO3 on the left, you need to put a 2 in front of the NaNO3 on the right. Everything else is already balanced so the only coefficient needed is 2 in front of the NaNO3.