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10 ml of .1 M phosphoric acid is titrated with .1M NaOH. After 10 ml of NaOH has been added the pH is 4 What is the ratio of H3PO4/H2PO4 - at this point?
The density of water at room temperature is lass than the assumed 1.0 g/mL used in the calculations for determining the enthalpy of neutralization.
Calculate the molar mass of a gas that has a density of 0.232 g/L at 156 oC and 222 torr. Use R = 0.0821 L-atm/mol-K for the value of the gas constant.
Substance A has a greater molar mass then substance B. Both are nonelectrolytes. If 50 g of substance A are dissolved in 250 g of water in one beaker
Use the dipole moments of and ( = 1.08, = 1.82) together with the percent ionic character of each bond ( 20% ionic, 45% ionic) to estimate the bond length in each molecule.
Calculate the pH of a 1.00 L solution which is made up of 0.046 mol acetic acid and 0.026 mol sodium acetate.
Naturally occuring chlorine has two isotopes, Cl-35, which has an atomic mass of 34.969 amu and Cl-37. If the average atomic mass of chlorine is 35.46 amu and its natural abundance is 75.53%,
An aluminum engine block has a volume of 4.77 L and a mass of 12.88 kg .What is the density of the aluminum in grams per cubic centimeter?
The correct name for FeO is iron(II) oxide is it a poyatomic or binary ion? What is the rule for naming FeO?
Write equations for (a) the hydrolysis of TiCl4 and (b) the neutralization of Ba(OH)2
Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP
A green leaf has a surface area of 2.00 cm^2. If solar radiation is 1030 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
What differences might you expect in the comparative solubility of each of them in lipids? WHY?
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