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Physical Chemistry
a compound has a percent composition of 42.1% carbon, 6.5% hydrogen, and 51.4% oxygen. the compound's total mass is 342.30008 amu. what is the formula for this compound?
Physical Chemistry
I have a little question.
A mixture of CO2 and N2 gases has an experiment density of 21922 mol/m3 at T=225K and Pressure= 68.759 MPa and Z=1.67661. What is density of this mixture of gases in mol/m3 by Peng-Robinson equation of state? (Mole fraction of Co2= 10.56%)
A mixture of CO2 and N2 gases has an experiment density of 21922 mol/m3 at T=225K and Pressure= 68.759 MPa and Z=1.67661. What is density of this mixture of gases in mol/m3 by Peng-Robinson equation of state? (Mole fraction of Co2= 10.56%)
Physical Chemistry
what are the factors on which strength of hydrogen bond depends.is it stronger in water or hydrogen fluoride.
Physical Chemistry
an electronic vacuum tube was sealed off during manufacture at a pressure of 1.2 x 10^-5 torr at 27 degrees Celsius. Its volume is 100 cubic centimeters. Determine the number of gas molecules per cubic centimeter inside the tube? Is this really a vacuum tube?
Physical Chemistry
In an investigation of the thermodynamic properties of alpha-manganese,the following heat contents determined
H700 - H298 = 2895 cal/g-atm
H1000 – H298 = 5450 cal/g-atm
Find a suitable equation for ( HT – H298) and also foe Cp as a function of temperature in the form (a + bT).Assume that no structural transformation takes place in the given temperature range.
H700 - H298 = 2895 cal/g-atm
H1000 – H298 = 5450 cal/g-atm
Find a suitable equation for ( HT – H298) and also foe Cp as a function of temperature in the form (a + bT).Assume that no structural transformation takes place in the given temperature range.
Physical Chemistry
Molybdenum at 20'C is BCC and has an atomic radius of 0.143 nm. calculate a value for its lattice constant a in nanometer.
Physical Chemistry
How does the change in temperature relate to an object's mass and its specific heat, respectively, for a given input of heat?
a. inversely, directly
b. directly, directly
c. directly, inversely
d. depends on the object
e. inversely, inversely
a. inversely, directly
b. directly, directly
c. directly, inversely
d. depends on the object
e. inversely, inversely
Physical Chemistry
"Water gas" is an industrial fuel composed of a mixture of carbon monoxide and hydrogen gases. When this fuel is burned, carbon dioxide and water result. From the information given below, write a balanced equation and determine the enthalpy of this reaction:
CO(g) + ½ O2(g) → CO2(g) enthaplhy change + 282.8 kJ
H2(g) + ½ O2(g) → H2O(g) enthalphy change + 241.8 kJ
CO(g) + ½ O2(g) → CO2(g) enthaplhy change + 282.8 kJ
H2(g) + ½ O2(g) → H2O(g) enthalphy change + 241.8 kJ
Physical Chemistry
Define Hardy-Schulze law
Physical Chemistry
calculate the number of molecules of C8H8 containing 1.44 * 10^25 C atoms
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#331389 on Nov 2022
#331389 on Nov 2022