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If 18.4 mL of 0.800 M~rm HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?
The density of air at ordinary atmospheric pressure and 25 0C is 1.19 g/L. What is the mass of air, in kg, in a room that measures 12.5 ft by 15.5 ft by 8.0 ft?
What sequence of steps represents the best synthesis of 4-heptanol (CH3CH2CH2)2CHOH?
Suggest to her a visual functional test that she can use to detect the presence of an alkene. Explain why it is specific for alkenes in this situation.
A buffer having equal amounts of a weak acid and its conjugate base has a pH =4.4. A small amount of sodium hydroxide was combined to this buffer solution .
In an equilibrium mixture the partial pressures of SO2 and O2 are 0.165 atm and 0.755 atm, respectively. What is the equilibrium partial pressure of SO3 in the mixture?
A solution is .855% HNO3 by mass. Density of the solution is 1.01 g/mL. Find [H+], [OH-], and pH.
How many grams of Na3PO4 will be needed to produce 400ml of a solution that has a concentration of Na+ ions of 0.900 ?
when 56.6 g of calcium and 30.5 g of nitrogen gas undergo a reaction that has a 93.0% yield, what mass (g) of calcium nitride forms.
A chemist wishes to prepare 200mL of a saturated solution of BaF2, the concentration of which is 6.3 x 10-3 mol/L. Determine the mass of BaF2 that will be needed to make up the 200mL of the solution.
A solution is made by dissolving 25.6 g of NaOH in approximately 450 mL of water in a volumetric flask. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to total 500 mL of solution.
Calculate the mass of propylene glycolC3H8O2 that must be added to 0.320kg of water to reduce the vapor pressure by 2.88torr at 40C Pressure H2O 40C 55.3torr
If a cell is in a resting state, which of the following is NOT true: a. cell needs little energy b. high ATP, low ADP levels
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