Covalent compounds occur between a metal and a nonmetal that share electrons when nonmetals gain or lose electrons only between metals when nonmetals share electrons

Which is an example of a reversible physical change?

Aman applies a force of 500n to push a truck 100m down the street how much does he do?

At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.