Arock has a mass of 13.0 g and displaces a volume of 3.9 ml of water in a graduate cylinder. what is the density of the rock? (write your number to 2 places after the decimal)

What stress will shift the following equilibrium system to the left? n2(g) + 3h2(g) ⇌ 2nh3(g) adding more n2(g) adding more nh3(g) increasing the pressure of the system reducing the volume of the container

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Which of the following ocean acidification? are the most likely side effects of a ph less than 7.0 in the ocean b. more metal salts altering the ocean chemistry c. dissolution of the shells of marine organisms d. both a & b e. all of the above.