Answer:

Explanation:
We want to find the density. The formula is mass over volume.

The mass is 500 kilograms. The volume is 0.026 cubic meters.

Substitute the values into the formula.

Divide.

This is just about equal to 19,320 kg/m³, so choice A is correct.
Answer:
121.63 g/mol
Explanation:
Sr(OH) 2 = Strontium Hydroxide
Answer:
6
Explanation:
The p orbital needs 2 more electrons.
Answer:
None of the alpha particles fired at the foil are being repelled back, like they were in the Rutherford atom simulation.I hope this is correct.
Answer:
<h3>
<u>A). react with acid that is added and make a base.</u></h3>
explanation:
<em>Buffer solutions resist a change in pH when small amounts of a strong acid or a strong base are added.</em>