Which of the following are balanced equations?

Check all that apply.
A. 4Na(s) + O2(g) → 2Na2O(s)
B. C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)
C. C3H8(g) + O2(g) → CO2(g) + H2O(g)
D. 2Mg(s) + O2(g) → 2MgO(s)

Question

Which of the following are balanced equations?

Check all that apply.
  		A. 	4Na(s) + O2(g) → 2Na2O(s)
  		B. 	C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)
  		C. 	C3H8(g) + O2(g) → CO2(g) + H2O(g)
  		D. 	2Mg(s) + O2(g) → 2MgO(s)

photon336 · Answer

The number of each atom has to be the same on each the product and reactant side.

anonymous · Answer

Not sure what you mean

photon336 · Answer

How many atoms are on each side for each element for this reaction? 

4Na(s) + O2(g) → 2Na2O(s)

do you know how to do this?

theprofessor35 · Answer

A balanced equation would mean that the amount of reactants are the same as the products. This demonstrates the law of conservation of mass.

anonymous · Answer

A and D are balanced

anonymous · Answer

Am I right