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a stack through which the gases flow at the rate of 7,500 kg/min. The gases are emitted at a pressure of 1 atm and a temperature of 200 oC. They have a molecular weight of 28. What is the volumetric flow rate of gases out the stack (m3/min)? Note - in these units, R has a value of 0.08206 atm-m3/kmol-K.
A piece of metal with a mass of 169 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 38 mL. What is the density of the metal?
An experiment shows that a 112-mL gas sample has a mass of 0.120 g at a pressure of 733 mmHg and a temperature of 33.0°C.
A sample of carbon dioxide gas occupies 617 mL at 0.812 atm and 11?C. What will the pressure be at a volume of 717 mL and a temperature of 16?C?Answer in units of atm
A rigid container of O2 has a pressure of 388kPa at a temperature of 713K. What is the pressure at 273K.
What is the pH of a solution prepared by mixing 25.00 mL of a 0.10 M solution of the weak acid CH3CO2H with 25.00 mL of 0.040 M sodium acetate, CH3CO2Na? Assume that the volume of the solutions are additive and that Ka = 1.8 ?* 10-5 for CH3CO2H.
A 21.10 g sample of liquid ethanol is initially at -36.90 oC. If the sample is heated at constant pressure (P = 1 atm.), how much kJ of energy are needed to raise the temperature of the sample to 100.60 oC.
How much heat is released when 50.0 grams of water at 100 degree celcius hits the skin and cools to a body temperature of 37 degree celcius.
how much energy is required to vaporize 98.6 g of ethanol at its boiling point if its Hvap is 40.5 kj/ mol ?
The normal boiling point of ether is 307.8 K. Calculate the temperature at which its vapor pressure is exactly half of that at its normal boiling point.
Important information about pH and Molarity, You add 5 drops of .100 M HCl to 100ml of "pure" water. Assuming that the volume of one drop is .035ml, calculate the expected pH of the resulting solution
How much heat is absorbed by 15.5g of water when its temperature is increased 20.0C to 50.0C?The specific heat of water is 4.184J/(g.C)
Do all chemical compounds undergo each type of chemical reaction,i.e. synthesis, decomposition, metathesis-precipitation, metathesis-neutralization, redox-single displacement, redox-combustion and can this information be useful to a criminal inves..
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