Answer:
False
=><em><u>Energy</u></em><em><u> </u></em><em><u>Neither</u></em><em><u> can</u></em><em><u> be</u></em><em><u> </u></em><em><u>created</u></em><em><u> </u></em><em><u>nor</u></em><em><u> </u></em><em><u>destroyed</u></em><em><u> </u></em><em><u>not </u></em><em><u>matter.</u></em>
B, this is because the particles in a solid such as the diamond can not move and even though they are locked into place they still vibrate
The mass of one mole of H is 1.008 grams.
The atomic mass for phosphorus is 31. So the molar mass of P is 3.54/31=0.114 mol. And according to the reaction equation, the ratio of coefficient is equal to the mole number. So the theoretical mass of P2O5 is 8.094 g. The actual yield is 6.807 g.