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Helium gas at constant pressure of 7.4 atm, expands in volume from 21.3 L to 79.2 L. The temperature is held at 278 K. Calculate the work done by the gas
How will you prepare the following solutions from 6.0 M solution of acetic acid? Give exact details. Assume that a 10-mL graduated cylinder (in which volumes can be read to the nearest 0.1 mL) and a 100-mL graduated cylinder are available.
sample of hydrogen gas initially at 29C and 7.0 L iscooled until its final volume is 2.9 L. What is its final temperature
Calculate the solubility product constant for Pb(IO3)2 (4.3 x 10^-5 M), given that the molar concentration of saturated solution is as indicated in parenthesis.
Use the Born-Haber cycle to calculate the lattice energy of LiCl(s) given the following data: ?H(sublimation) Li = 155.2 kJ/mol; I1 (Li) = 520 kJ/mol; Bond energy (Cl Cl) = 242.8 kJ/mol; EA (Cl) = 348 kJ/mol; ?Hf (LiCl(s)) = -408.8 kJ/mol. A
a sample consisting of various gases contains 3.1times10-6 mole fraction of radon. this gas at a total pressure of 34
2 students are titrating and started the titration at 30.0 mL. The buret was at 49.50 mL and the solution still had not chnaged to the base color. They stopped, now at 49.80 mL and refilled the buret to 0.00 mL and continued to titrate.
What is the mass in grams of 2.50 x 10^12 lead (Pb) atoms. Enter your answer in scientific notation.
If 4.21*10^-3 moles of Ca^2+ react with excess PO4^3- to form calcium phosphate, how many moles of the solid will form.
Nitrogen Oxide is a pollutant in the lower atmosphere that irritates the eyes and lungs and leads to the formation of acid rain. Nitrogen oxide forms naturally in the atmosphere according to the following endothermic reaction
a 48.4 ml sample of gas in a cylinder is warmed from 19 degrees celsius to to 88 degrees celsius. what is its volume at
The solid borax reagent is contaminated with a water-soluble substance that does not react with hydrochloric acid. As a result of this contamination, will Ksp of the borax be reported as too high, too low, or unaffected
What symbol is used in a chemical equation to represent the following phrases? Select the symbol in blue and drag it into the appropriate bin
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