Question

Assume that the density of solid water is 920 kg m-3 and that of liquid water is 1000 kg m-3. Calculate the change of the melting temperature, T, of ice for the process of changing pressure from 100 kPa to 1850 kPa. Use fusH = 6010 J mol-1 for water.

Answer #1

7.1 Assume that the density of solid water is 920 kg m-3 and
that of liquid water is 1000 kg m-3. Calculate the change of the
melting temperature, T, of ice for the process of changing
pressure from 100 kPa to 1850 kPa. Use fusH = 6010 J mol-1 for
water.
7.2 At two temperatures, 85 K and 135 K, the vapor pressures of
a certain liquid were found to be 540 Torr and 830 Torr,
respectively. From this information,...

The normal freezing point of water is 0.0 oC. At this temperature
the density of liquid water is 1.000 g/ml and the density of ice is
0.917 g /ml. The increase in enthalpy for the melting of ice at
this temperature is 6010 J/mol. What is the freezing point of water
at 200 atmospheres?

he normal freezing point of water is 0.0 degrees celsius. at
this temperature the density of liquid water is 1.000 g/mL and
density of ice is 0.917 g/mL. the increase in enthalpy for the
melting ice at this temperature is 6010 J/mol. What is the freezing
point of the water at 200 atms?

The normal melting point of H2O is 273.15 K, and Hfusion= 6010
J mol–1. Calculate the decrease in the normal freezing point at 100
and 500 bar assuming that the density of the liquid and solid
phases remains constant at 997 and 917 kg m–3, respectively.

Calculate the entropy change for the process of taking 1.00 kg
of water from a temperature of -26 C to +42 C keeping in mind that
ice melts at 0 C. Assume a constant pressure of 1 bar and a
temperature independent heat capacity within a given phase (Cpm =
37 J/Kmol for the solid and Cpm = 75 J/Kmol for the liquid
state).

the liquid-solid-vapor triple point of a pure component is T
triple = 10 C and P triple = 0.05 bar. The molar densities of the
liquid and solid phases are pl = 22 kmol/m^3 and ps = 26 kmol/m^3,
respectively. The enthalpy change of sublimation of the solid at
the triple point is Hsv = 6.22 kJ/mol and the enthalpy change of
vaporization of the liquid at the triple point is Hlv = 5.65
kJ/mol. You are asked to calculate...

A tank is filled with 8m water (density water = 1000 kg/m^3) and
2 m oil (density oil = 900 kg/ m^3).Flow is discharged at the
bottom from a circular exit section with 5 mm diamter. Ignoring all
frictional effects, determine the
a) Velocity in exit section if the top tank pressure is
atmospheric
b) Flow rate in exit section if the top tank pressure is -25 kPa
vacuum.

The density of freshwater ice is 917 kg/m^3.
Density of salt water is 1030 kg/m^3. If an ice berg has a
volume of 1000m^3, how much is below the surface?

The density of gold = 19, 300 kg/m3 which is 19 times
the density of water. Can gold float on water?
Explain.
2/5 of the volume of a solid is under water of density =
1000 kg/m3; find the density of the solid; (c) the same solid
floats so that 3/5 of its volume is under liquid. Find the density
of liquid. Volume of the solid = 5.0 x 10-3 m3

Problem 8.8
It has been suggested that the surface melting of ice plays a
role in enabling speed skaters to achieve peak performance. Carry
out the following calculation to test this hypothesis. At 1 atm
pressure, ice melts at 273.15 K,
ΔHfusion=
6010 Jmol−1, the density of ice is 920 kgm−3, and the density of
liquid water is 997 kgm−3.
Part A
What pressure is required to lower the melting temperature by
3.7 ∘C?
Express your answer to three significant...

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