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Grams and centimeters in the metric system have been defined so that the density of water at 3.98 C is exactly 1. At 20 C, the density of water is 0.9982 g/ml. What percent error results from the assumption that the density of water is 1.000 g/ml at 20 C
If a bottle of nail polish remover contains 151 g of acetone, how much heat would be released by its complete combustion?
how many grams of hydrogen are necessary to react comletely with 50.0 g of nitrogen in the following reaction n23h2
Which of the following would you expect to be a molecule and which would you expect to be part of an ionic solid. Drag the appropriate compounds to their respective bins. CO, NO, LiCl, HBr, BaS, RbCl, SrO, LiBr
what is the PKa for the acid HA if a solution of 0.65 m and 0.85 M NaA has a PH 4.75
What is the concentration of a solution that has 2.79 g of Co(NO3)2 dissolved into enough water to give a total volume 125 mL
A sample of solid having a density of 4.88 g/cm3 had an apparent mass of 16.0886. The density of the balance weights is 8.00 g/cm3. Calculate the true mass of the object.
Calculate the density of a solution if the following data has been recorded during a lab experiment
Water has seeped through the pore spaces in the glass cup. 4. The relative humidity of the air near the glass cup is approaching 0 percent. 5. The dew point temperature was not reached.
A 2.5L bottle of concentrated sulfuric acid H2SO4 (16M) falls and breaks on the floor. What mass of NaHCO3 would be required to neutralize this acid spill through the following reaction HCO3 + H => H2O +CO2
What is the pressure of the gas in this mercury manometer if h = 69 mm and atmospheric pressure is 749 mmHg
Consider a voltaic cell which has a copper electrode immersed in a solution of copper (II) sulfate and a zinc electrode immersed in a solution of zinc sulfate. determine Eocell. If the concentration of zinc sulfate is 10 times greater than the con..
A mixture at equilibrium at 827 C contains .552 mol CO2, .552 mol H2, .448 mol CO, and .448 mol H20. The balanced equation is shown below: CO2(g) + H2(g) CO(g) + H2O(g) What is the value of Keq?
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