3109 - The explosive nitroglycerin (C3H5N309) has also been used as a drug to treat heart patients to relieve pain
(angina pectoris). We now know that nitroglycerin pro-
duces nitric oxide (NO),which causes muscles to relax
and allows the arteries to dilate. If each nitroglycerin
molecule releases one NO per atom of N, calculate the
mass percent of NO available from nitroglycerin.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;

how important do you think an instrument is to the musician who plays it?