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Rivoflavin is one of the B vitamins. It is also known as vitamin B6 and is made of carbon, hydrogen, and nitrogen, and oxygen atoms. When 10.00 g of vitamin B6 is burned in oxygen, 19.88g of CO2 and 4.79 g of H2O are obtained. Another experiment shows that vitamin B6 is made up of 14.89%N. What is the simplest fourmula for vitamin B6?
A gas measures 10ml at 27degree celcius and 750mm of mercury what will be the mole of gas at 15degree celcius and 750mm of mercury
Which of the following correctly describes the equalibrium constant for the gas phase reaction between H2 and O2 to form gaseous H2O? a.) Kc = [H2O]/[H2][O2] b.)Kc = [H2O]^2/[H2][O2] c.) Kc = [H2O]^2/[H2]^2[O2] d.) Kc = [H2][O2]/[H2O] e.) Kc = [H2..
Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal. Suppose 242 g of Na metal is formed. How many moles of electrons are required. How many coulombs are required
What is the balanced molecular equation for the reaction. What is the balanced complete ionic equation for the reaction. What is the net ionic equation. Which ions are spectator ions
degree C and 600. torr contains 50% helium and 50% xenon by mass. what are the partical pressures of individual gases?
What mass of copper in g can be deposited by the passage of 1.0 A for 4.0 hr through a solution of CuCl2
A 3.00L container is rated to hold gas at a pressure no greater than 100atm. Assuming the gas law behaves ideally, what is the maximum number of moles a gas that this vessel can hold at 27 degrees C
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 74% of the Mg2+ be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9* 10-12.]
If the mass of water surrounding the calorimeter was exactly 1000 g and the heat capacity of the bomb calorimeter without the water was 1.75 kJ/degrees Celsius, calculate the molar heat of the combustion of methanol
what is the concentration of glyceraldehyde-3-phosphate? Assume a temperature of 25.0 °C. The constant R = 8.3145 J/(mol·K)
A chromium-containing compound has the formula Fe(x)Cr(y)O4 and is 28.59% oxygen by mass. Find x and y.
If you had a high-energy xenon particle beam and wanted to make gold, what element would you bombard
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