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1- Suppose 0.976g CuCl2 and 0.775g of Na3Po4 were reacted. What is the percentage yield of Cu3(Po4)2 if 0.430g of Cu3(PO4)2. was isolated? (Use 380.12g/mol for Na3PO4 and 170.48g/mol for CuCl2 and 434.60 g/mol for CU3(PO4)2 ).Be sure to check for the limting reactant.
2- A mixture contains both potassium phosphate and potassium chloride. What is the percentage of potassium phosphate in this mixture if reaction of 0.401g of this mixture with excess copper (II) chloride yields 0.213g of copper (II) phosphate? (Assume that the potassium phosphate is not hydrated.
What would be the temperature change of 450ml of water that surrounds this ice cube assuming all the heat was transfered form the surrounding water.
For the borax solution at 48?C, no solid borax is present in the test tube. 5 millimeters is transferred to the corresponding calibrated test tube and subsequently titrated with the standardized hydrochloric acid solution.
whole blood what is the mass in pounds of this amount of whole blood
Determine the number of moles of O2 produced by the decomposition of 213 g of NaClO3.
A 1g sample of carbon obtain from material found in a ancient site gave 7900 carbon-14 disentegrations in a 20-hour period. In the same amount of time 1g of carbon from a source found yesterday under went 18,400 disintegrations.
Calculate the work done on a 2500. kg car in accelerating it from rest to a speed of 100. km/hr.
Titanium crystallizes on a body-centered cubic lattice with a unit cell edge length of 3.28 Å. The density of titanium is 4.54 g /?cm3. The atomic mass of titanium is 47.88.
Determine water solubility under normal atmospheric conditions (assuming that Carbon dioxide obeys Henry's law?)
How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.45 of with enough carbon monoxide to produce iron metal?
Find out what will be the half-lives if [NOBr]o = 0.054 M - The rate constant for the second order reaction Is 0.80 M-1s-1 at 10 degree celsius temperature
The vapor pressure of bromine, Br2(l) at 25°C is 228 mm Hg.If 2.00 g of liquid bromine is used, what is the final pressure in a 2.0 L flask?
Determine the freezing point (°C) of a 0.015 molal aqueous solution of MgSO4. Assume i = 2.0 for MgSO4. The molal freezing-point-depression constant of water is 1.86 °C/m..
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