If there are 2.4 moles of NaCl in a solution of 500 mL, what is the molarity of the solution?

What is the average rate of the reaction between 10 and 20 s?

What is bromine+calcium iodide--> calcium bromide +iodine balanced

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.