HELP PLZ 20 POINTS! Predict the products of each reaction

Fe(s) + O2(g) →
BaCl2 (aq) + Na2SO4(aq) →
Mg(s) + CuSO4(aq) →
Ag2O(s) →
CH4(g) + O2(g) →

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

How have the greenhouse gasses increased from the year 2000 to 2018

What type of matter is made of only one kind of atom