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A solution containing both Mn2+ and Cd 2+ is saturated with H2S gas, after which the concentration of H is found to be .30 M. will the sulfides of these ions form a precipitate under these condition
An ideal gas is taken through a quasi-static process described by P = alphaV2, How much work is done on the expanding gas in this process
The reaction OH(aq) + HCN(aq) H2O(l) + CN(aq) is first-order in both the OH and HCN concentrations. The rate constant at 25oC is 3.7×10^9 mol^-1 L s^-1. In an experiment, 0.500 L of 0.020 mol
An object has a kinetic energy of 237 J and a momentum of magnitude 29.3 kg·m/s. Find the speed and the mass of the object
NaOH(aq) is rapidly mixed with an equal volume of 0.020 mol L^-1 HCN(aq). Calculate the time, in seconds, required for this [OH] to decrease to 1.0×10^4 mol L^1. (Hint: Start from the rate law
A uniform rod of mass 3.05×10?2kg and length 0.350m rotates in a horizontal plane about a fixed axis through its center, What is the angular speed of the rod after the rings leave it
Two stretched cables both experience the same stress. The first cable has a radius of 3.63 multiply.gif 10-3 m, Determine the stretching force acting on the second cable
For the reaction Cu(s) + 2 Fe3+(aq) <-> Cu2+(aq) + 2 Fe2+(aq), the equilibrium constant is Kc = 3.7×10^14 at 25 oC. Suppose that excess Cu(s) is added to 1.0 L of 0.015 mol L^-1 Fe(NO3)3
A student on a piano stool rotates freely with an angular speed of 3.05 rev/s. Calculate the initial kinetic energy of the system
Pick the one from each a,b,c,d,e and explain it has this property. Briefly explain your answer. a) Highest boiling point: LiF or ClCH2COOH b) Highest vapour pressure at 25 degrees: CH3CH2COOH or CH3
The femur is a bone in the leg whose minimum cross-sectional area is about 3.60 multiply.gif 10-4 m2. Find the maximum stress that this bone can withstand
A spring is hung from the ceiling. A 0.300-kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
The reaction between nitric oxide (NO) and hydrogen is thought to proceed via the following mechanism. Do not make any assumptions about which step is rate determining
An undersea research chamber is spherical with an external diameter of 3.70m. What is the buoyant force on the chamber
A student is given an antacid tablet that weighed 5.6832 g. The tablet was crushed and 4.3628 g of he antacid was added to 200 mL fo simulated stomah acid.
An open-tube mercury manometer is used to measure the pressure in an oxygen tank. The atmospheric pressure is 1020mbar .1 bar = 105 N/m2. Determine the absolute pressure (in Pa) in the tank
calculate the maximum volume in mL of .15 M HCl that each of the following antacid formations would be expected to neutralize. Assume complete neutralization.
A bowling ball encounters a 0.760 m vertical rise on the way back to the ball rack, Find the translational speed at the top
Consider the reaction H2(g) + Br2(g) <=> 2 HBr(g), which is exothermic as written. What would be the effect on the equilibrium position of adding a suitable catalyst
a 27.2 g arrow is fired with a velocity of 87.3 m/s from a bow with a mass of 2.45 kg. Find the impulse on the arrow
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. What is the tire pressure
Can I be provided with the pictures of a labeled HNMR for each of these compounds? A) p-toluidine B) N-acetyl-p-toluidine C) p-acetamidobenzoic acid D) p-aminobenzoic acid E) ethyl p-aminobenzoate
A golf club strikes a 0.044-kg golf ball in order to launch it from the tee. For simplicity, With what speed does the ball leave the club
In a diffraction grating experiment, light of 600 nm wavelength produces a first-ordered maximum 0.35 mm from the central maximum on a distant screen. What is the wavelength of the light from the se
What is the freezing point of the solution. Melting point (CCl4): -22.92 C Melting point (C6H6): 5.5 C K(CCl4): 2.65 C/m K(C6h6): 3.92 C/m