The computation would be:moles = mass/ Molar Mass, but we are looking for the mass, so rearranging, will give us: mass = moles x MM
Q = moles x Hf
Q = (mass/MM) x Hf
mass = (Q x MM) / Hf
= (1.50-kJ x 18.0-g/mol) / 6.01-kJ/mol
=4.49 g H20 is the answer
Answer:
20n
Explanation:
60n - 40n = efficiency of pulley system
20n = efficiency of pulley system
Explanation:
both are different types of energy. one is elastic p.e while the other one is made by change in sound waves
