How much heat is required to raise the temp of 22g of copper from 42.5°c to 88°c?

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.