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Calculate the amount of work done against an atmospheric pressure of 1.00 atm when 500.0 g of zinc dissolves in excess acid at 30.0°C.
Zn(s) + 2H+(aq) → Zn2+(aq) + H2(g)
determine what is the density of the oxygen gas in the full bottle if a cylindrical gas lecture bottle has internal
Calculate the mean and standard deviation of w/v percentage of acetic acid and the 95% confidence interval for the mean. Calcium in a mineral was analyzed five times by each of two methods
A three-step industrial process involves both heat and work. Calculate the overall change in energy DE for the entire process, given these three individual steps.
A certain rifle bullet has a mass of 5.73 g. Calculate the de Broglie wavelength of the bullet traveling at 1073 miles per hour. Physical constants can be found here.
Given the standard free energies of formation, what is the value of for the cell reaction?
When 5.00 × 1022 molecules of ammonia react with 4.00 × 1022 molecules of oxygen, how many grams of nitrogen gas are produced? 4NH3(g) + 3O2(g) → 2N2(g) + 6H2O(g)
Large jumps in ionization energy tend to occur whenever the removal of that electron disrupts an electron configuration ending in
What volume of ethanol is contained in 35mL (1 fl. oz) of 86 proof liquor, which contains 43%v/v ethanol. *30 mL ethanol *43 mL ethanol *15 mL ethanol *37 mL ethanol
Consider the following reaction: HC2H3O2 (aq) + H2O (l) = H3O+ (aq) + C2H3O2- (aq) Kc=1.8*10^-5 If a solution initially contains 0.260M HC2H3O2, what is the equilibrium concentration of H3O+ at 25C
what is the molarity of acetic acid in vinegar when 19.9 mL of NaOH neutralized vinegar and the molarity of NaOH is 0.2175?
Consider two aqueous solutions, A and B (which contain different solutes). Is it possible for solution A to have a greater concentration than solution B in terms of mass percent, but a smaller concentration in terms of molarity
Assuming that you start with 2.00 g of sodium benzoate and 5 mL of 3M HCl, how many molar equivalents of HCl are you using? Use two decimal places.
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