For the following incomplete combustion reaction, what are the coefficients necessary to balance the equation: ___ CH4 + ___ O2 → ___ CO2 + ___ H2O + ___ C + ___ CO

Select one:
a. 4,6,1,8,1,2
b. 4,8,1,2,1,6
c. 8,1,1,2,4,6
d. 6,1,8,2,1,4

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.

Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that

8. what happens to matter during a chemical reaction