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A 0.9760-g sample of potassium acid phthalate required 44.00 mL of barium hydroxide solution for titration. How do you calculate the molar concentration of the barium hydroxide.
Under certain conditions, the substance ammonium nitrite can be broken down to form nitrogen and water. If 32.4 grams of ammonium nitrite react to form 14.2 grams of nitrogen
If a 50.0 g object needs 1,145 Joules to increase its temperature by 10.0 oC, what is its specific heat capacity?
A flask contains 0.110 mol of liquid bromine, rm Br_2. Determine the number of bromine molecules present in the flask.
Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2 . To measure water hardness, a sample of groundwater is titrated with EDTA,
at 1 atm, how much energy (kJ) is required to heat 81.0g of H2O(s) at -22.0 degrees celcius to H2O(g) at 119.0 degrees celcius?
How many grams of oxygen gas are required to produce 7.68 kJ of heat when hydrogen gas burns at constant pressure to produce gaseous water?
The density of germanium is 5.325 g/cm3. If you made a 5.3-nm diameter quantum dot of germanium, how many Ge atoms would it contain? Assume the dot is spherical.
how many grams of sulfur dioxide are produced when 45.0g of thionyl chloride reacts with excess water?
Which of the following would be expected to have the lowest freezing temperature?
How many grams of aluminum oxide are produced when 50.3g aluminum react, When 0.510 mole aluminum is reacted in a closed container with 7.90g oxygen, how many grams of aluminum oxide can form?
Elemental exonium (not a real element) consists of two major isotopes
analysis. To a 500 mL air sample at 700 torr and 38 deg C, she adds 20.00mL of 0.01017 M aqueous iodine which reacts as follows:
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