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A solution is made by dissolving 11.7 g of NaOH in approximately 450 mL of water in a volumetric flask. The solution becomes quite warm, but after it is allowed to return to room temperature, water
An electron moves with a horizontal velocity 3.0x 10^6m/s of as it enters a deflector inside a TV tube. The electron strikes the screen after traveling 17 cm horizontally and 40 cm vertically upward
Calculate Kc for the reaction at 686°C. If we add CO2 to increase its concentration to 0.50 mol/L, what will the concentrations of all the gases be when equilibrium is reestablished?
a sample of carbon dioxide occupies a 2.54 dm^3 container at STP. what is the volume of the gas at a pressure of 150.0kPa and a temperature of 26.0 C?
They want to dock, which means they have to arrive at the same position at the same time with zero velocity. a) What should the initial velocity of the second spacecraft be?
One mole of an ideal gas is sealed in a 22.4- L container at a pressure of 1.00 rm atm and a temperature of 273 K. The temperature is then increased to 305 K, but the container does not expand. What
Find the magnitude and direction of the force Fw. Express the direction as an angle with respect to due east.
Calculate the cell potential after the reaction has operated long enough for the [Cr2+] to have changed by 0.30 M.
Two blocks connected by a string and tied to a wall, with θ = 29°. The mass of the lower block is m = 1.2 kg; the mass of the upper block is 2.0 kg.(a) Find the tension in the string conne
A particle revolves in a horizontal circle of radius 3.40m . At a particular instant, its acceleration is 1.50m/s^2 , in a direction that makes an angle of 35.0 degrees to its direction of motion. D
Use the data to calculate the average number of moles of ascorbic acid present in the titrated samples? titration of 10.00 mL fruit juice with 2.00X10-3mol/L I2(aq)
What is the molarity of a solution that contains 27.0 of vitamin B1 hydrochloride (molar mass = 337 ) in 210 of solution?
Write an equation for the hydrolysis of glyceryl tripalmitate.
acetic acid is an important ingredient of vinegar. a sample of 50.0 mL of commercial vinegar is titrated against a 1.00 M sodium hydroxide solution. what is the molar conentration of acetic acid pre
Assuming the reaction is first order in sucrose, determine the mass of sucrose that is hydrolyzed when 2.55L of a 0.150 M sucrose solution is allowed to react for 195 minutes.
Suppose you mix aqueous soutions of Pb(CH3CO2)2 and KCI, what is the molecular equation for this reaction? Please provide total ionic equation and net ionic equation for this reaction. And what do y
How much heat in kilojoules is evolved in converting 1.50 mole of steam at 150 deg celsiys to ice at -35.0 deg. celsius? The heat capacity of steam is 1.84 J/g. deg celsius and that of ice is 2.09
Please could you draw the chemical reaction of the reduced MIOX with O2. Also what are the spin states of each iron, and how do they give rise to EPR signals in each state?
A graduated cylinder contains 131 mL of water. A 18.0 g piece of iron (density = 7.86 rm{g/cm^3}) and a 25.0 g piece of lead are added. What is the new water level in the cylinder?
A 6.5 × 104 kg space probe is traveling at a speed of 28400 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a for
A sample of the compound MSO4 weighing 0.1131 g reacts with barium chloride and yields 0.2193 g BaSO4. What must be the atomic mass of the metal M?
What is the correct number of d electrons associated with the central metal ion in each of the following complexes?
Suppose in Part E, Step 2, a student gets a red solution when 1 drop of phenol red indicator is added to the tube. Which of the following would explain this result? The test tube was dirty and conta
Suppose you have a sample of sodium weighing 11.42 g. How many atoms of sodium are present in the sample?