Determine the molar mass and identity of the metal
56g of metal carbonate, containing the unknown metal M, was heatedto give the metal oxide and CO2 according to thechemical equation below. The mass of CO2obtainedwas .376g. Determine the molar mass and identity of the metal. MCO3 = MO + CO2
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We know that the average life of a light bulb is 10,000 hours. There are 12 lightbulbs in a classroom. In order for a class to be held in the room,9 or more lightbulbs must be working. Each light bulb works independently of the other light bulbs i
The osmotic pressure of 180.0 mL solution of sucrose(C12H22O11) in ethanol at28.0°C is 1.85 atm. What is the molar concentration of the sucrose solution? Assume ideal behavior of the solution.
The force has magnitude 2.0 N and is directed at a counterclockwise angle of 100° from the positive direction of the x axis. How much work is done by the force on the coin during the displacement?
A spring is initially compressed from a free length of 8in to a length of 6in, making a net initial compression of 2in. What additional work is done in comressing it 3in more (5 inches total) to a 3in length?
A golfer lines up for her first putt at a hole that is 18 m exactly northwest of her ball's location. She hits the ball 18 m and straight, but at the wrong angle, 38 degrees from due north. 1. In order for the golfer to have a "two putt green," de
How many grams of monosodium phosphate and disodium phosphate are needed to make 1L of 0.1M phosphate buffer at pH 7.4? The exact pKa for inorganic phosphate are 2.15, 6.82, and 12.38.
During the compression process the relation between pressure and volume is PV1.3=constant. Calculate the work and heat transfer per kilogram, and show this on P-V and T-S diagrams.
In a Gallop poll of 1012 randomly selected adults, 9% said that cloning of humans should be allowed. We are going to use a .05 significance level to test the claim that less than 10% of all adults say that cloning of humans should be allowed. What
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