Answer:
1.95mol
Explanation:
First let us generate the equation for the reaction:
2H2 + O2 —> 2H2O
From the equation,
1mole of O2 reacted to produce 2moles of H2O.
Therefore, Xmol of O2 will react to produce 3.9 mol of H2O i.e
Xmol of O2 = 3.9/2 = 1.95mol
Answer:
This solvent is not suitable because ΔS°vap > 0.
Explanation:
Let's consider a system at a higher temperature T1, and its surroundings at a lower temperature T2. Let's call q the heat that goes irreversible from the system to the surroundings:
ΔSsystem = -q/T1 (it's losing heat, so q must be negative)
ΔSsurroundings= q/T2
ΔSprocess = ΔSsystem + ΔSsurroundings
ΔSprocess = -q/T1 + q/T2
ΔSprocess = q*(1/T2 - 1/T1)
ΔSprocess = q*[(T1 - T2)/(T1*T2)]
As pointed above, T1> T2, so ΔSprocess > 0 and because of that, the reaction is spontaneous. It means that if ΔS°vap > 0, the solvent will vaporize. So, as we can notice, the solvent given is not suitable.
601 expressed as an integer is 3.
An integer refers to a whole number, a number which do not contain any decimal point.
To express any given number as an integer, just count the number of significant figures in the number and write this down as a whole number.