Reference no: EM132735299
Question 1: Oil flows through a 5 cm diameter horizontal smooth pipe at 35°C. The maximum velocity with which the oil flows through the pipe is 8nilsec. Calculate the pressure drop for 12 in length of the pipe.
Viscosity of oil is at 0.36 kg/m sec.
Density of oil at 35°C is 1163 kg/m3.
(A) 221184 Pa (B) 314894 Pa (C) 437864 Pa (D) 223768 Pa
Question 2: A pycnometer weighs 25.60 g empty and 35.55 g when filled with water at 20°C The density of water is at 20°C is 0.9982 g/ml. When10.20 g lead is placed in the pycnometer and the pycnometer is again filled with water at 20°C, the total mass is 44.83 g.What is the density of the lead in grams per cubic centimeter?
Question 3
Phosphorus pentachloride decomposes according to that equation. PCl5 equilibrium reaction arrow PCl5 An equilibrium mixture in a 5.00 L at 245 °contains 4.27 g of PCl5, 9.31 g of PCl3 and 2.86 of Cl2. How many grams of each will be found if the mixture is transferred into a 2.00L flask at the same temperature.
Question 4
The equilibrium H2 + Br2 → has Kc = 2.0 x 109 at 25°C. If 0.112 mol of H2 and 0,224 mol of bromine are placed in a 10.0 L container,what are the equilibrium concentrations at that temperature?
Question 5
Calculate the mg/L of the following:
a. 0.01000 N Ca2+
b. 1.000 M HCO3-
e. 0.02000 N H2SO4
d. 0.02000 M SO42-
Question 6 How many mg/L of magnesium ion will remain in solution in water that is 0.001000 M in hydroxyl ion and at 25°C?
Question 7: Determine the concentration, in moles per liter, to which the hydroxide concentration most be raised to produce a concentration of 0.200 mg/L of copper if the starting concentration is 2.00 mg/L. Estimate the result pH.