Which type of fossil fuel is made from trees, ferns, mosses, and other marsh plants?

petroleum

crude oil

coal

natural gas

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction