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Riboflavin is one of the B vitamins. It is also known as vitamin B6 and is made up of carbon, hydrogen, nitrogen, and oxygen atoms. When 10.00 g of vitamin B6 is burned in oxygen, 19.88 g 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 formula for vitamin B6? The answer should be C17H20N4O6.
If 8 moles of the gas A is placed in a 60L tank with 1 mole of B at 0 degrees celcius and 1 atm, how many moles of gas are present in the tank when the reaction is complete? 2A(g) + B(g) = 3C(g) + D(g)
If the flask has a volume of 0.500 L, what is the minimum mass of PH3BCl3(s) that must be added to the flask in order to achieve equilibrium
Zn + 2HCl → ZnCl2 + H2 If 0.600 gram of zinc is used, what is the amount of zinc chloride that is produced in the above reaction?
The reaction of 8.10g of Carbon with excess O2 yields 12.80g of CO2. What is the percent yield of this reaction?
if the reaction between iron iii ion and thiocyanate ion yielded an equilibrium concentration of .15m for each of these
Calculate the molar concentration of OH - ions in an 1.37 M solution of hypobromite ion, BrO- (Kb = 4.0 10-6).
a sample of ethanol c2h5oh has a mass of 43.8 g.a how many carbon atoms does the sample contain?b how many hydrogen
calculate the osmotic pressure associated with 50.0 grams of an enzyme of molecular weight 98,000 g/mol dissolved in 2600 mL of benzene at 30 celsius
The reaction 4PH3(g) -> P4(g) + 6H2(g) is found to be first order in PH3 with a rate constant of 1.6*10^-2 sec^-1 at 650 C. a)Give the rate law (rate equation) for the reaction and explicitly state how the reaction rate in this case would be defin..
Calculate the of 0.280L of a 0.450M NaHSO3 - 0.285M Na2SO3 buffer before and after the addition of the following substances.
can someone please answer these questions regarding the endo and exo products formed through two different transition states in the reaction between furan and maleic anhydride.
what is the energy of the light emitted in joules when an electron falls from the n=4 to the n=2 orbit in the hydrogen atom ? (E2= -328 kJ/mol , E1= -82 kJ/mol)
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