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The temperature of 2.50 moles of an ideal gas increases from 13.5'C to 55.1'C as the gas is compressed adiabaticaly. Calculate q,w,deltaU and deltaH.
How many molecules are in 22.41 L of an ideal gas at STP? Remember the answer is supposed to be in molecules
Suppose you have a solution that might contain any of the following cations: Ni^(2+), Hg^(+), Fe^(3+) and Ca^(2+). Addition of excess HCl causes a precipitate to form.
Calculate the volume in mL required to provide 4.30g of ethanol ( C2H6O) from a 1.50M solution
When the body metabolizes glucose water and carbon dioxide are produced according to the following equation. C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O
what would you expect to observe if KHCO3 reacted with H2SO4? what test would you perform to identify the product?
If the acid dissociation constant, Ksuba, for an acid HA is 8 x 10^-4 at 25 degree C, what percent of the acid is dissociated in a 0.50 M solution of HA at 25 degree C?
A concentration cell consists of two Sn/Sn2+ electrodes. The electrolyte in compartment A is 0.15 M Sn(NO3)2. The electrolyte in B is 0.82 M Sn(NO3)2. Which electrode is the cathode
The equilibrium pressure of H2 over solid uranium and uranium hydride, UH3, at 500 K is 139 Pa. Calculate the standard Gibbs energy of formation of UH3(s) at 500 K.
You need to produce a buffer solution that has a pH of 5.05. You already have a solution that contains 10 mmol (millimoles) of acetic acid. How many millimoles of acetate
milk is pasteurised when heated to 63 C for 30 minutes, but if it is heated to 74 C it takes only 15 seconds for the same result. Find the activation energy for this sterilisation process
Their boiling points in C are: Ne -245, Ar -186, Kr -152, Xe -107. Using the periodic relationship between the noble gases, predict the boiling point of Radon.
an ice cube contains 925 grams of water. If the initial temperature is at 15 degrees celcius, how many kilojoules of heat are needed to cool and freeze the water at 0 degrees celcius.
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