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If an automobile travels 230 mi with a gas mileage of 21.5 mi/gal, how many kilograms of CO2 are produced?
what volume(in mL) of 0.0887 M MgF2 solution is needed to make 275.0mL of 0.0224 M MgF2 solution.
65.50 mL of 0.161 M HF is titrated with 0.1200 M NaOH. What is the pH at the equivalence point.
what is the molar mass of a gas that has a density of 1.02g/L at 0.990 atm pressure and 37 o C
A sample containing 4.80 g of O2 gas has a volume of 15.0 L. Pressure and temperature remain constant. What is the new volume if 0.500 moles of O2 gas is added?
A 43 kg person drinks 280. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 19% of the energy in milk is converted to mechanical work.
What mass of solid sodium formate (of MW 68.01) must be added to 110 mL of 0.55 mol/L formic acid (HCOOH) to make a bu?er solution having a pH of 3.84? Ka = 0.00018 for HCOOH
What is the density of a substance if a 2.50mL sample has a mass of 0.880g at room temperature? ( show calculations) What is the specific gravity of the substance?
Write the neutralization reaction, balance it, name the products THEN Solve the problem above.
When equilibrium is established, it is found that the partial pressure of ammonia has increase by 12.4%. Calculate K for the decomposition of NH4HS at 25 degrees C.
Calculate the solubility of silver chloride in a solution that is .100 M in NH3. Ksp for AgCl = 1.77x10^-10. Kf for Ag(NH3)2+ = 1.7x10^7
Glucose Isomers, When glucose is placed in water two stereoisomers are formed, one with the new OH on the opposite side of the ring than the 6th carbon
Determine the characteristic wavelengths if an electron are accelerated through an electric potential to a kinetic energy of 18kev.
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