See the equation below to answer the questions: 2C2H6(g) + 7O2(g)→6H2O(g) + 4CO2(g)
a. What minimum volume of oxygen will be required to completely react with 6.0 liters of C2H6?
b. How many molecules of H20 (g) will result if 1 x 10 23molecules of C2H6 completely react with excess of oxygen?

Which of the following is a compound? a. carbon b. oxygen c. hydrogen d. water

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.