Answer:
Radium is used to produce Radon
Explanation:
Radon is a gas used to treat cancer (certain types).
NH3(g) will take the shape of and completely fill a closed 100.0 milliliter container.
Electron, because they’re about 1/2000 the mass of a proton or nuetron
Answer:
C.
The pan will be the same temperature as the stove.
Explanation:
The early precambrian atmosphere consisted primarily of nitrogen and carbon dioxide with almost no oxygen.
<span>Today, the atmosphere contains about 20% oxygen, less carbon dioxide and similar amounts of nitrogen. </span>
<span>Photosynthetic green-leaf plants and trees are largely responsible for the change, converting carbon dioxide to oxygen.</span>
