CAN SOMEONE PLEASE HELP ME IN CHEMISTRY

When balancing a chemical equation:

Gwhich r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? which r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? −ch2−oh −ch2−o||c−nh2 −ch2−coo− −ch2−ch2−ch2−ch2−n+h3

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.