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A 10-ft long ramp is used to lift a wheeled box to a height of 1.0 ft. Compared to a direct 1.0-ft lift, the force needed to push the box along the ramp is
Propose and state the mechanism for the reaction that occurs between 2-methyl-2 propanol as well as NH4Cl in an H2SO4/H2O medium.
Ethanol is a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in grams, of 143 mL of ethanol.
what mass of KO2 in grams is required to react with 8.90-L of CO2 at 22.0 C and 767mm Hg? first calculate the number of moles of CO2 (R=0.08026 L*atoms/ mol*K) find moles of Co2 and mass of KO2 in grams?
if 58.3 grams of a 14 mm solution of naoh were boiled to dryness how much naoh would remain? if the recovered naoh from
Problem- Ksp= 1.45x10^-16 for Ag3PO4. Calculate the molar solubility of Ag3PO4 in a) .010M Na3PO4 solution. b) Pure water c). .010M AgNO3 solution. The correct answers come out to a) 8.13x10^-6 M b) 4.8x10^-5 M c) 1.45x10^-10 M.
A sample of helium has a volume of 3 liters when the pressure is 500 torr. What volume does the gas occupy at 300 torr?
Calculate the partial pressure of each gas and the total pressure after the valve between the flasks is opened. P(He) in mmHg P(Ar) in mm Hg Ptotal in mm Hg
The enthalpy of formation (?Hf) of rubidium chloride is -430.5 kJ/mol. The enthalpy of sublimation for rubidium is 86 kJ/mol, and the first ionization energy of rubidium is 402 kJ/mol. The bond dissociation energy of (g) is 243 kJ/mol, and the ele..
robots are used to auto industries to weld to components at specific locations. clearly the end position of the arm
Problem- A 25.0-mL solution of 0.0700 M EDTA was added to a 31.0-mL sample containing an unknown concentration of V3. All V3 present formed a complex, leaving excess EDTA in solution. This solution was back-titrated with a 0.0450 M Ga3 solution un..
How many years will it take for a sample of 25 microcuries of tritium to decay to 3.125 microcuries
Suggest one way in which an enzyme solution might be stored for future examination without damaging the enzyme
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