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1. The analysis of a compound gives it composition as 31.6%K , 29.3%CCCL, and 39.1% oxygen . Determine the empirical formula of the compound.
2. The analysis ofa sample of a hydrate of thorium sulfate revealed it contined 0.007054 mol Th(SO4)2 and 0.02822 mol of water. Determine the empirical formula of the hydrate.
3. The analysis of 4.017g of a strontium iodide hydrate revealed it contained 3.041g of anhydrous strontium iodide and thus 0.976g of water . Determine the formula of the hydrate.
Some watch dials are coated with a phosphor, like ZnS , and a polymer in which some of the first H atoms have been replaced by third H atoms, tritium.
a 200 ml stock solution contains 0.9 m cacn2. when 100 ml of the stock solution is diluted to 120 ml how many moles of
How much heat is required to boil 48.5g of water at its boiling point? Express your answer numerically in kilojoules. Please answer with a decimal
the equilibrium constant kp for the following reaction is 9.4 at 500.0 degrees c. a mixture in a container at this
Given that: 2 H2(g) + O2(g) ? 2 H2O(g), four moles of hydrogen should react with excess oxygen to produce 2 moles of water.
If 4 mL of a 10M solution of sodium hydroxide is tritrated with a 5 M solution of H2SO4, determine how many milliliters of H2SO4 is required for complete neutralization. Sulfuric acid is a di-protic acid, that is it has two hydrogen atoms in its m..
Calculate the concentration of all ions present in each of the following solutions of strong electrolytes.(a) 0.0214 mol of sodium phosphate in 10.5 mL of solutionchemical concentration Mcation concentration Manion concentration
Why is there a difference in water soluility when looking at the structure of methyl ethyl ketone and chlorobenzene. Methyl ethyl ketone has a water solubility of 268 g/L, while chlorobenzene has a water solubility of 0.47 g/L.
A 120 pound woman working in an office consumes about 2200 kcal/day, whereas the same woman climbing a mountain needs 3400 kcal/day.
Write, using correct notation, the balanced nuclear reaction equation for each of the following:a. Electron capture by 93/43 Tc
Calculate the pH of a 0.02 M solution of oxalic acid (H2C2O4). Ka1 = 5.9 x 10^-2, Ka2 = 6.4 x 10 ^-5. Calculate the concentration of oxalate ion, (C204^2-) in the solution
What is the pressure of the gas in this mercury manometer if h = 73 mm and atmospheric pressure
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