answer : 6CO2 + 6H2O → C6H12O8 + 5O2
Explanation:
Label Each Compound With a Variable
aCO2 + bH2O = cC6H12O8 + dO2
2. Create a System of Equations, One Per Element
C: 1a + 0b = 6c + 0d
O: 2a + 1b = 8c + 2d
H: 0a + 2b = 12c + 0d
3. Solve For All Variables
a = 6
b = 6
c = 1
d = 5
4. Substitute and Verify Result
6CO2 + 6H2O = C6H12O8 + 5O2
Answer:
D) the electric energy changes into light and heat energy and is not destroyed
Explanation:
Energy can not be created or destroyed
Notice that in the equation given, there is 1 mol of Mg3N2
and 6 mol of H2O. Consequently, the question is requesting, if we took 2.5 mol
of Mg3N2, how many mol of H2O would be essential to complete a similar reaction
-- in quintessence, multiplying everything by 2.5:
the solution would be: 6 * 2.5 = 15 mol
