Answer:Rubidium and Strontium
Explanation:
A, milligrams because rice is very small therefore you'd need to use a very small unit of measurement.
The equation for this question could be 
→
.
so for 6.75 moles of 
*3 moles of O_{2}/2 moles of
= 10.125
Answer:
<u>A. Skin</u>
Explanation:
Skin unlike teeth, bones & shells is fragile & get decomposed easily under the soil.
Answer:Noble gases:
are highly reactive.
react only with other gases.
do not appear in the periodic table.
are not very reactive with other elements.
Explanation:Noble gases:
are highly reactive.
react only with other gases.
do not appear in the periodic table.
are not very reactive with other elements.
