1) How much heat energy would be required
to change the temperature of 163g of
water from 15°C to 53.5 °C ?

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?