Answer:
The pump work is 3451 kJ/s
Explanation:
Pump work (W) is calculated as
where
is the enthalpy of water at its final state
is the enthalpy of water at its initial state
is water mass flow
For liquids, properties are evaluated as saturated liquid. From the figure attached, it can be seen that
Replacing
Answer:
The nswer to the question is
The maximum fraction of the air in the room that could be displaced by the gaseous nitrogen is 0.548 or 54.8 %
Explanation:
To solve the question we note that
The density of the liquid nitrogen = 0.808g/mL and the volume is 195 L tank (vaporised)
Therefore since density = mass/volume we have
mass = Density × volume = 0.808 g/mL × 195 L × 1000 ml/L =157560 g
In gaseous form the liquid nitrogen density =1.15 g/L
That is density = mass/volume and volume = mass/density = 157560 g/(1.15g/L) or
volume = 137008.69565 L
The dimension of the room = 10 m × 10 m × 2.5 m = 250 m³ and
1 m³ is equivalent to 1000 L, therefore 250 m³ = 250 m³ × 1000 L/m³ = 250000L
Therefore fraction of the volume occupied by the gaseous nitrogen =
137008.69565 L/250000 L = 0.548
Therefore the gaseous nitrogen occpies 54.8% of the room
Answer: a compound is a chemically made or chemically bonded where as a mixture is just something added like a smoothie
You just need to convert it into moles per Liter (mol/L).
0.0815mol / 0.550L = 0.148mol/L
