3. What is the average atomic mass for the element hydrogen, H? The
proportion of the stable isotopes
found in the environment is shown
below.
Isotope
1H
2Η
1
1
Percent
abundance
91.75%5.85%

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Which of the following ocean acidification? are the most likely side effects of a ph less than 7.0 in the ocean b. more metal salts altering the ocean chemistry c. dissolution of the shells of marine organisms d. both a & b e. all of the above.

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?