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A. Calculate the molarity of a solution by dissolving 0.710 grams of Na2SO4 in enough water to form exactly 900 mL of solution
B. How many moles of KMnO4 are present in 300 mL of a 4.40X 10to the -2 m solution
C How many milliliters of 120 M HCl solution are needed to obtain 0>240 mol of HCl
A compound is found to be 30.45% N and 69.55 % O by mass. If 1.63 g of this compound occupy 389 mL at 0.00°C and 775 mm Hg, what is the molecular formula of the compound.
The Keq for imidazole binding to hemoglobin can be determined from the following linear equation: 1/?A100Keq * 1/[lm +1/?A100=(1/?A) a. For the plot of the reciprocal of the change in absorbance versus the reciprocal of the imidazole concentration..
a gaseous system undergoes a change in temperature and volume. what is the entropy change for a particle in this system
a 155 gram sample of copper was heated to 150 degrees Celsius then placed into 250 gram of water at 19.8 degrees Celsius. Calculate the final temperature of the mixture.
what will the freezing points be of the resulting solution? kf(H2O)=1.86 C/m
Suppose you wanted to make a pH=4.25buffer. What would be the best acid/base system: acetic acid/acetate or lactic acid/lactate? THe Ka of lactic acid is 8.32x10(exponent -4). Throughly explain your reasoning.
What volume would be occupied by 100 g of oxygen at a pressure of 1.50 atm and a temperature of 25ºC?
At a certian temperature and pressure, chlorine molecules hav an average velocity of 0.0610m/s. What is the average velocity of sulfur dioxide molecules under the same conditions.
If a saturated solution of silver nitrate at 20 degrees celsius contains 216g AgNO3 per 100g of water, what mass of water could contain 725g of this solute at the same temperature.
Calculate the cumulative acid equivalents per square meter that were deposited in the watershed over the entire period 1880-1950.
If we add more water to the vessel the pressure (remains the same, decreases, or increases)? Fully explain answer for credit
Write the reaction between ferric chloride and lime slurry that results in precipitation of Fe(OH)3. For a dosage of 40 mg/l FeCl3: What is the required stoichiometric addition of lime expressed as CaO?
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