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If you had a saturated solution of NaNo3 at 40 degrees Celsius that contained 85 grams of water, how much of the salt would you need to add to have a saturated solution at 70 degrees Celsius?
A carbon-hydrogen-oxygen containing compound yields 1.029 g CO2 and 0.198 g H2O in a combustion analysis( note that this means O2 was added the overall reaction) what is the empirical formula? if the Molar mass is 138.16 what is the molecular form..
als hclaq alcl3aq h2gwhat mass of hydrogen can be produced from 2.90 g of aluminum and 14.0 g of hcl in the above
How many moles of NaOH should be added to a solution containing 0.440 moles of formic acid, HCOOH, to prepare a formic acid/formate
The concentration of a commercially available concentrated nitric acid is 70.0 percent by mass, or 15.9 M. In 100 grams of solution there are 1.11 mol of HNO3. Calculate the VOLUME of 100 grams of the solution
calculate the amount of heat in joules (q) required to affect this temperature change and the total change in internal energy, ?U. Note that some books use ?E as the symbol for internal energy instead of ?U.
dry-cleaning solvent (molecular weight = 146.99 g/mol) that contains C, H, and Cl is suspected to be a cancer-causing agent. When a 0.133 g sample was studied by combustion analysis, 0.239 g of CO2 and 0.0323 g of H2O formed. How many moles of eac..
Aqueous sulfuric acid will react with solid sodium hydroxide to produce aqueous sodium hydrogen sulfate and liquid water . Suppose 3.92 g of sulfuric acid is mixed with 2.22 g of sodium hydroxide.
A gas is heated from 268 K to 290 K while its volume is increased from 25.0 L to 37.0 L by moving a large piston within a cylinder. If the original pressure was 0.90 atm, what would be the final pressure?
(a) electric dipole moment in one dimension (b)the mean square deviations of the position and momentum of a particle in one dimension from the mean values.
Decide whether or not each of the following metals dissolves in 1M HCl. For these metals that do dissolve, write a balanced redox reaction showing what happens when the metal dissolves
dissolved in 200 mL of solution. What is the pH of the solution? pKa1 = 6.37 and pKa2 = 10.25.
How much energy (heat) is required to convert 248 g of water from 0oC to 154oC? Assume that the water begins as a liquid, that the specific heat of water is 4.184 J/g.oC over the entire liquid range, that the specific heat of steam is 1.99 J/g.oC,
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