Can someone help me?

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

The identities of substances are the same before and after which type of change

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false