10 ! why is it important for all of us to have some understanding of chemistry?

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

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.

Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass