Which of the following reactions involves the combination of two elements?Select an answerA CaO + CO2  →  CaCO3 B 4Na + O2  →  2Na2O C SO2 + 12O2  →  SO3 D NH3 + HCl  →  NH4Cl

Which of the following combination reaction is an example of compound - element type combination reaction?CaO(s) + CO2(g) CaCO3(s)2H2(g) + O2(g) 2H2O(ℓ)CaO(s) + H2O(ℓ) Ca(OH)2(aq)2CO(g) + O2(g) 2CO2(g)

What type of reaction is shown below?CH4  +  2 O2  -----  CO2  +  2 H2O

Learning goal 1: Select which of the following are decomposition reactions. ZnCO (s) → ZnO (s) + CO (g)CaCO (s) → CaO (s) + CO (g)2NO (g) → 2N (g) + O (g)TiCl (aq) + 2Mg (s) → Ti (s) + 2MgCl (aq)

Write word equations for the following reactions:1.Calcium Oxide + Hydrochloric acid2.Sodium Oxide + Sulfuric acid3.Copper oxide + Nitric Acid

Give the formulae of the compounds formed from the following sets of elements(a) Calcium and fluorine(b)Hydrogen and sulphur(c) Nitrogen and hydrogen (d) Carbon and chlorine (e) Sodium and oxygen (f) Carbon andOxygen