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Physical Chemistry
alchemists and their contribution
Physical Chemistry
3.18 mole is situated in amoniam phashphet .what is the number of mole of oxygen in it compound?
Physical Chemistry
Whats 31th electron of As Quantum Numbers?
actually this is my question : which one is filled earlier? ml=-1 or ml=+1
please mention to reference of your answer.
tnx
actually this is my question : which one is filled earlier? ml=-1 or ml=+1
please mention to reference of your answer.
tnx
Physical Chemistry
The dissociation of dinitrogen tetraoxide into nitrogen dioxide is represented by the equation
below.
N2O4(g) 2NO2(g); ∆Ho = +57kJ mol –1
If the temperature of an equilibrium mixture of the gases is increased at constant pressure, will
the volume of the mixture increase or decrease and why?
A The volume will increase, but only because of a shift of equilibrium towards the right.
B The volume will increase, both because of a shift of equilibrium towards the right and also
because of thermal expansion.
C The volume will stay the same, because any thermal expansion could be exactly
counteracted by a shift of equilibrium towards the left.
D The volume will decrease, because a shift of equilibrium towards the left would more than
counteract any thermal expansion.
below.
N2O4(g) 2NO2(g); ∆Ho = +57kJ mol –1
If the temperature of an equilibrium mixture of the gases is increased at constant pressure, will
the volume of the mixture increase or decrease and why?
A The volume will increase, but only because of a shift of equilibrium towards the right.
B The volume will increase, both because of a shift of equilibrium towards the right and also
because of thermal expansion.
C The volume will stay the same, because any thermal expansion could be exactly
counteracted by a shift of equilibrium towards the left.
D The volume will decrease, because a shift of equilibrium towards the left would more than
counteract any thermal expansion.
Physical Chemistry
The molarity of urea in a solution prepared by dissolving 16 g of urea (MW = 60.0 g/mol) in 39 g of H2O is __________ M. The density of the solution is 1.3 g/mL.
A. 3.7
B. 0.11
C. 6.3
D. 6.8
A. 3.7
B. 0.11
C. 6.3
D. 6.8
Physical Chemistry
: A gas occupies a volume of 2.4 L at 14.1 kPa. What volume will the gas occupy at 84.6 kPa
Physical Chemistry
0.2 mol of HCL and 0.1 mol of barium chloride dissolved in water to produce a 500ml sol. The molarity of the CL- is?
Physical Chemistry
in a solution NaOH is 12 persent of total mass.its density is 1.131gram per mL.what is the value of volume which is keep 5 mole of NaOH?
Physical Chemistry
One of these is not required for measuring the lowering of vapour pressure
Thermometer
b-bromonaphthalene
Acetic Acid
Manometer
Thermometer
b-bromonaphthalene
Acetic Acid
Manometer
Physical Chemistry
Which of the following statements is false?
The properties of N2(g) will deviate more from ideality at -100oC than at 100oC.
Molecules of an ideal gas are assumed to have no significant volume.
Molecules of CH4(g) at high pressures and low temperatures have no attractive forces between each other.
Van der Waal's equation corrects for the non-ideality of real gases.
The properties of N2(g) will deviate more from ideality at -100oC than at 100oC.
Molecules of an ideal gas are assumed to have no significant volume.
Molecules of CH4(g) at high pressures and low temperatures have no attractive forces between each other.
Van der Waal's equation corrects for the non-ideality of real gases.
