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Physical Chemistry
What is the theoretical yield of NaCN if 174g of Ca(CN)2 are reacted in the following reaction:
Ca(CN)2 + NaCl --> CaCl2 + NaCN
Ca(CN)2 + NaCl --> CaCl2 + NaCN
Physical Chemistry
I am attempting to create chromic acid (CrO3) for use in electroplating. Given access to sodium dichromate / potassium dichromate, how would I go about this? Any way I can think of would leave two aqueous products, and distillation is not ideal with hexavalent chromium (for obvious reasons)
Physical Chemistry
How is maximum no. Of element in a period determined in a modern periodic table ???? Please give full explanation?
Physical Chemistry
When 12.0g each of carbon hydrogen and ethyl ethanoate (molar mass 88g/mol) are each burned completely in oxygen, the quantities of heat given out are respectively 394.2kJ, 1715.5kJ and 306kJ. Calculate the standard enthalpy of combustion of these three substances
Physical Chemistry
A 60.0 mL 0.513 M glucose solution is mixed with 120.0 ml of 2.33 M glucose solution.
Calculate the final concentration of glucose (assume volumes are additive)
Calculate the final concentration of glucose (assume volumes are additive)
Physical Chemistry
What is the volume is 25g of acetone when the density is 0.791 g/ml
Physical Chemistry
3.60cmcube of gas has a pressure 580torr and a temperature of 27°c what will be the volume if the pressure is change to 2.00atm and the temperature to 253k
2)A gas was contain in a container with a volume of 5mcube and a pressure of 15 ATMOSPHERE what volume will it occupy at ATM
3)A gas of volume 300cmcube at 450mmHg will be when the volume is increase to 500cmcube assuming that the temperature remains constant
2)A gas was contain in a container with a volume of 5mcube and a pressure of 15 ATMOSPHERE what volume will it occupy at ATM
3)A gas of volume 300cmcube at 450mmHg will be when the volume is increase to 500cmcube assuming that the temperature remains constant
Physical Chemistry
3. One mole of an ideal gas is expanded isothermally and reversibly at 27C from a volume of 2.28dm3 to 4.56dm3. Calculate the heat evolved, work done, internal energy and enthalpy.
Physical Chemistry
Calculate the work done by the system when 6moles of an ideal gas at 25C is allowed to expand isothermally and reversibly from an initial volume of 5dm3 to final volume of 15dm3
Physical Chemistry
1. Calculate the workdone when 59g of iron is dissolved in HCl at 25C in
a) Closed vessel b) Open beaker
a) Closed vessel b) Open beaker
