12. A graduated cylinder has 22 mL of water placed in it. An irregularly shaped rock is then placed in the graduated cylinder and the volume of the rock and water in the
graduated cylinder now reads 30 mL. The mass of the rock is 24 g. A) Find the
volume of the rock. B) Find the density of the rock.

How many liters of water vapor can be produced if 108 grams of methane gas (ch4) are combusted at 312 k and 0.98 atm? show all work. pls ! will mark as brainliest

Is 343 in the sequence -5, -2, 1, 4, 7

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth