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Pure acetic acid known as glacial acetic acid is a liquid with a density of 1.049g/mL at 25 degrees celicus. Calculate the molarity of a solution of acetic acid at 25 degrees celicus in enough water to make 250.0mL of solution.
What is the freezing point of a solution made by dissolving 352g of ethylene glycol C2H6O2 on 648 g of water the freezing point of pure water is 0.0C and kf of pure water is -1.86Cm?
A mixture of 25.0 g of Mg and 25 g of B203 are allowed to react to completion. Identify the masses of MgO and B that are formed and determine the masses of any left -over reactants
Galactose is concentrated in a cell by a transporter driven by ATP hydrolysis. What is the ratio of ADP to ATP required to maintain a galactose concentration gradient of 100,000:1
when two atoms collide some of their kinetic energy may be converted into electronic energy in one or both atoms. if
use average bond energies to estimate the energy change in kjmol for the reaction all bonds are single bonds except as
Celsius the initial sample contained 0.0718 grams of calcium. What percent of the limestone by mass is CaCO3?
what is the minimum amount of 6.0 M H2SO4 necessary to produce 25.0 g of H2 according to the reaction between aluminum and sulfirc acid 2Al + 3H2SO4 ---> Al(SO4)3 + 3H2
Phosphate systems form essential buffers in organisms. Calculate the pH of a buffer made by dissolving .8 mol of NaOH in .50 L of 1.0 M H3PO4
What volume is need to give 2L/min flow for 19200min with a tank pressure of 2500psi? Assuming Ideal behavior.
Name the two types of nucleic acids and where each is found in the cell. Also include the four bases particular to each nucleic acid.
Equal volumes of an unknown gas and nitrogen (N2) gas take 5.37 min and 3.55 minutes, respectvely to effuse through a small pin hole. calculate the molar mass in g/mol of the unknown gas
A 1.678 g sample of a component of the light petroleum distillate called naphtha is found to yield 5.143 g CO2 (g) and 2.456 g H2O (l) on complete combustion. This particular compound is also found to be an alkane with one methyl group attached to..
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