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A sample of nitrogen gas that occupies a volume of 31.2 L at a temperature of 0 oC and a pressure of 1 atm contains , answer in moles of gas please.
The average per month of energy use is 879 kWh (kilowatt) of electricity. If the price of one kWh is $0.0668 how much money will spend on electricity for one year?
The activity of a radioactive sample is the number of nuclear disintegrations per second, which is equal to the first-order rate constant times the number of radio-active nuclei present.
The temperature of 55.6 g of a material decreases by 14.8C when it loses 3080 J of heat. What is its specific heat?
ethyl acetate:petroleum ether was used to elute the chlesterol before dichloromethane
Derive a frequency response curve for a low-pass RC filter in which R= 2.5 kohms and C = 0.015 F. Cover a range of (Vp)0/(Vp)1 of 0.00I
At what pH would the side chain of histidine exist predominately in a form that could be involved in an ionic bond?
Explain why the balloon would float when heated. Make sure to discuss which factors change and which remain constant, and why this matters. Be complete.
How many photons per second are striking the photocell? B. How much energy is mJ/s (millijoules per second) is the photocell absorbing?
If you start with 5.0mL of isopentyl alcohol and after esterification via glacial acetic acid you obtain 6.2mL of isopentyl acetate
Calculate the activities of Ca2+ and F- in the solution of flourite (CaF2) in pure water at 25C without regard to possible hydrolysis.
Concentration of a Species, One mole of NOCl gas is added to a 4.0L container. The NOCl undergoes slight decomposition to form NO gas and Cl2 gas.
a 1 l buffer solution with ph 9.05 is desired. one of the two ingredients of the buffer is hcn. what could the other compound be? Suggest a suitable ratio and determine the exact moles of the two compounds to achieve the desired pH.
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