D i had taken the test already.
I personally try to balance the equation without looking at the given coefficients in the unbalanced reaction and this is my result:
2 C2H14+11 O2--> 4 CO2+14 H2O
I think none of the given answers are correct, and the answer is obviously 11.
Hope this will help :))
Answer:
C. 10 W.
Explanation:
Hello!
In this case, since the power the person uses to lift the 10-N load is computed by using the formula:
Whereas W is the work and t the time; we can compute the work by multiplying the force applied in 1 m:
Now, we divide it by the time to obtain:
Since joules over seconds are watts.
Best regards!
Numbers of moles = weight (g) / molecular weight (g/mole)
47000 metric tons = 47000000000 g
∵ molecular weight of sulfuric acid = 98 g/mole
∴ No. of moles of sulfuric acid = 47000000000/98 = 479591836.73 moles