Which of the following is represented in the highest percentage by volume in dry air?
a. oxygen
b. carbon dioxide
c. nitrogen
d. hydrogen

Predict the products butane (c4h10) + oxygen —>

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?