The chemical equation below shows the burning of magnesium with oxygen to form magnesium oxide 2mg + 02 --> 2mgo the molar mass of o2 is 32.0g/mol. what mass, in grams, of o2, is required to react completely with 4.00 mol of mg? a. 2.00 b. 64.0 c. 128 d. 256

B.) 2Mg + 02 --> 2MgO. According to stoichiometry, 2 moles of Mg reacts with 1 mole of O2. Therefore 4 moles of Mg will react with 2 moles of O2. Therefore mass of O2 required = moles of O2 x molar mass of O2 = 2 x 32 = 64 grams.

Its strengthits conductivity of heat and electricity its shiny colourmalleable and ductility

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na