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Question: Your company is planning to manufacture a boat propelled by a jet of water. The boat must be capable of exerting a 200-lbf pull on a line which holds it motionless. The intake to the boat is inclined at an angle of 85" and is a pipe with a 6-in. inside diameter. The motor and pump are capable of delivering 150 gaVmin through the horizontal outlet
a. Calculate the outlet pipe size which gives the required thrust.
b. Calculate the minimum horsepower output required of the motor if its efficiency is 100 percent.
What is the pH of a 0.31 M solution of arsenic acid, H3AsO4. In this solution, what are the concentrations of H2AsO4- and HAsO42-
Spectroscopists have observed He+ in the outerspace. This ion is a one-electron species lik ea neutral hydrogenatom. Calculate the energy emitted for the transition from the n =5 to the n = 3 state in this ion using the equation:
How much heat must be absorbed by the six pack to lower its temperature from 25.0C to 5.0C?
A gas is compressed in a cylinder from a volume of 20 L to 2.0 L by a constant pressure of 10 atm. Calculate the amount of work done on the system.
Which of the following pairs has about the same atomic radius?
a 0.5123g sample molar mass 204.23gmol of khp was dissolved in about 25 ml of distilled water and titrated to the
Calculate the concentrations of all ions in the solution after reaction. Check your concentrations to make sure that the solution is electrically neutral
In the balanced molecular equation for the neutralization reaction between phosphoric acid and potassium hydroxide, the products are: a. 3H2O b. K3PO4 + 3H2O c. KPO4 + H3OH d. K+(aq) + PO43-(aq) + 3H+ + 3OH-
standard-state free energy of formation data to calculate the acid-dissociation equilibrium constant
delta H = -174 kcal/mol (-728 KJ/ mol) methanol for the process. How many kilocalories are released by burning 2.00mol of methanol? 3- How many kilojoules are released by burning 55g of methanol?
How many gallons of E25 could be made by dilution. About how many cars does this fill at 13.0 gallons per car
5H2C2O4(aq) + 2KMnO4(aq) + 3H2SO4(aq) ---> 10CO2(g) + 2MnSO4(aq) + K2SO4(aq) + 8H2O(l). What is the concentraton of KMnO4 solution if 22.35mL reacts with 0.5170g of oxalic acid.
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