How many moles of magnesium are needed to react with 16g of O2?

a. 0.10 mole b. 0.20 mole c. 2.0 mole d.3.0 moles e. 0.80 moles

Answer:
2Mg + O2 --> 2MgO
16g O2 = 16/32 = 0.5 mol O2
so you need 2 x 0.5=1.0 mol Mg
as it is (mgo) and the atom of oxygen =16 g
so it needs only one mole of magnesium

The answers post by the user, for information only, FunQA.com does not guarantee the right.



More Questions and Answers:
  • Chemistry hard question, help?
  • Chemistry help 10 points for first answer (partial answers are fine just do whatever you know)?
  • Someone please help with Biochemistry Question TY!?
  • Calculate soln. pH if 100mL 0.10M Na2S is mixed with 200mL 0.050M HCL. (HINT: Consider Kb for HS-[1.1x10-7])?
  • What is a good fusion experiement?
  • Chemistry question, i need help!!?
  • Light and chemical carbon structures.?
  • CHEMISTRY volume question (V=nRT/P)?
  • Advanced methods of separating mixtures.?
  • What test can be carried out to identify each gas? Hydrogen, Oxygen, Carbon Dioxide, Ammonia and Chlorine?