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Determine the error in the molar mass of Mg(ClO4)2. If 0.982(+/- 0.002)g is dissolved in a 250 mL (+/-0.08 mL) volumetric flask and water added to the mark, what is the concentration and error in the concentration of ClO4-?
Would you answer be affected if the Mg(ClO4)2 were only 99.9% pure?
Capsaicin, the compound that gives the hot taste to chili peppers, has the formula C18H27NO3. (a) Calculate its molar mass.
A 15.00 mL sample of unknown concentration of sulfuric acid is precititated with excess lead(II) nitrate and a precipitate of lead(II) sulfate is collected.
In the chlorination of cyclohexane there are two types of termination steps: recombination and disproportionation. 1) give two products of recombination:
Ascorbic acid is titrated with 23.1 mL of 0.5 M KIO3. How many moles of ascorbic acid are present?
a sample of H2O with a mass of 46.0 grams has a temperture of 100 c. how many joules energy are necessary to boil the water
A stock solution is prepared by adding 23 mL of 1.6 M Pb(ClO3)2 to enough water to make 50 mL. How many moles of ClO3- are in 24 mL of the stock solution?
If you measure the pH and find it to be 11.24, how many grams of triethylmine were used to make the solution?
What are the molality and mole fraction of solute in a 36.3 percent by mass aqueous solution of formic acid (CH3OH)?
Compute the work of expansion(in Joules) accompanying the complete combustion of 1.0 grams of sucrose C 12 H 22 O 11 to CO 2 and (a) liquid water, (b) water vapour at 20 degrees Celsius when the external pressure = 1.0 atm
Cabbage water will spoil after a few days. How might you make a cabbage indicator with a longer shelf life? According to your cabbage water, what is the pH of baking soda, crushed aspirin, cleanser, garden lime, sugar and lemon juice?
Calcium carbide, CaC2, reacts with water to form acetylene. CaC2(s) + 2 H2O(l) C2H2(g) + Ca(OH)2(s) How many grams of water are needed to react with 473 g of calcium carbide?
What volume 0.100 M NaOH will react completely with 25.00 mL of 0.100 M HCl?
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