Answer:
D. Gas
Explanation:
The correct option is D.
Just like the sun, there is a layer of the earth that is gas. It is known as the atmosphere.
The earth's atmosphere is known to be a layer of gases that are surrounded by the earth and retained by the earth's gravity. The gases in the earth actually contain roughly 78% nitrogen, 21% oxygen, 0.97% argon and carbon dioxide, 0.04% trace amounts of other gases, and water vapor. This combination of gases is commonly called air.
The answer that best fits the blank provided above is MECHANICAL.
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.
Presuming the arrow is between H20 and CO
On the left there are 2 gas moles.
On the right there are 4 gas moles.
The equilibrium will shift to the side with the most no. He gas moles when pressure is decreased.
Therefore the answer is A, since 4>2.
If you have any questions, feel free to ask
Thermal energy when solid, liquor , and gas combine
