The unbalanced equation below shows the combustion of methane. CH4 +02 —CO2 + H2O
Which series of numbers represents the coefficients necessary to balance the equation?

A-1, 1, 1, 2
B-1, 2, 1, 2
C-2, 2, 1, 4
D-0, 3, 2, 2

Noble gases are the most reactive elements on the periodic table. a. true b. false

An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d