Answer:
A.
as the sum of the energy of the products and the energy of the reactants.
Explanation:
Because the sun is on top of the energy.
The answer is that the baseball travels 40 miles per hour
H₂:
M=2g/mol
m=10g
n = m/M = 10g/2g/mol = 5mol
O₂:
M = 32g/mol
m = 80g
n = m/M = 80g/32g/mol = 2,5mol
2H₂ + O₂ ⇒ 2H₂O
2mol : 1mol : 2mol
5mol : 2,5mol : 5mol
10g : 80g : 10g+80g=90g
B
Answer : The value of change in entropy for vaporization of water is 
Explanation :
Formula used :
where,
= change in entropy of vaporization = ?
= change in enthalpy of vaporization = 40.7 kJ/mol
= boiling point temperature of water = 
Now put all the given values in the above formula, we get:
Therefore, the value of change in entropy for vaporization of water is
