Tungsten (W) is the element
Answer:
A
Explanation:
always more reactants than products
Answer:
Electric engines have efficiencies of roughly 90% whilst combustion engines about 10% to 30%. This is because combustion engines emit much more heat, which is always energy that is not used as work, and thus increases inefficiency.
Explanation:
1.40E+5 (140000)
I believe this is right