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The molecular weight of anhydrous calcium chloride is 110.99. How many grams do you need for 100 ml of 50 mM calcium chloride? Hydrogen peroxide is supplied in a 30% solution. If your protocol calls for using a 0.1% solution, how would you make 20mL?
A water sample is suspected to be contaminated by iron (III) ions. How could you determine if the sample is really contaminated
Write structures for all the aldol condensation products you expect from the cross aldol condensation of 4-methyl benzaldehyde and 2-butanone(methyl ethyl ketone)
A flask of nitrogen is collected over water at a total pressure 765.0 mmHg. If the partial pressure of the water vapor is 25.0 mmHg, what is the pressure exerted by the nitrogen?
The empirical formula for acetic acid is CH2O. Its molar mass is 60 g/mol. what the molecular formula is?
A 6.11 g sample of Cu---Zn alloy reacts with excess aqueous HCl producing 1.26 L of H2(g) at 22.0 degrees C and 728 torr. Since only the Zn portion of the alloy reacts, calculate the percent Cu in the alloy.
Draw graphs representing Boyle's law, Charles's law, and Gay-Lussac's law for a fixed amount of gas. Make sure that you label each axis and state the assumptions for each law-that is, the variable(s) that is (are) held constant for each law.
write the balanced equation for the ionization of the weak base pyridine c5h5n in water h2o. phases such as aq or l are
If the initial pressure of a system was 1.00 atm and the volume was halved and the temperature was tripled, what is the final pressure? A) 2.00 atm B) 0.667 atm C) 1.50 atm D) 6.00 atm E) not enough information
For one of the solutions you make up for this week's experiment, 8.00 mL of 2.0E-3 M iron(III) nitrate solution is mixed with 1.00 mL of 2.0E-3 M potassium thiocyanate solution,
(i) calculate the random match probability, RMP, for Katie (ii) based on the profile given and the attached inheritance.
Assuming a tank temperature of 16oC, what mass of oxygen is contained in the two tanks?
A solution of ethanol (C2H5OH) in water is prepared by dissolving 63.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 255.0 mL of solution. What is the molarity of the ethanol in this solution?
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