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A gaseous hydrogen and carbon containing compound is decomposed and found to contain 85.63% C and % H by mass. The mass of 258 mL of the gas, measured at STP, was found to be 0.646 g. What is the molecular formula for this compound?
A sample of nitrogen has a volume of 605 mL at a pressure of 84.77 kPa. Assuming that the temperature is constant, at what pressure will the gas has a volume of 0.766 L
What are the Bi and Bi+ quantum numbers of the electron removed when Bi is ionized to Bi+?
A solution may contain any of the Group III cations. Treatment of the solutio with CIO- in alkaline medium yields a yellow solution and a colored precipitate.
the partial pressure of helium is 341 mmhg and the partial pressure of neon is 112 mmhg, what mass of argon is present in the mixture?
A copper refinery produces a copper ingot weighing 180lb . If the copper is drawn into wire whose diameter is 8.10 mm , how many feet of copper can be obtained from the ingot? The density of copper is 8.94g/cm3 .
The magnesium and calcium ions present in seawater([Mg2+] = 0.059 M and [Ca2+] = 0.011 M) can be separated by selective precipitation with KOH.
if 5.00g helium gas is added to a 1.00-L ballon cantaining 1.00g of helium gas, what is the new volume of the ballon?
Draw the structure of a compound c5h8o that reacts with phenyl-hydrazine, decolorizes bromine in dichlorometh, and does not give a positive iodoform test
what is the difference between the solvents used to run TLC's of polar and non-polar lipids?
constitutionally isomeric ketones that have the molecular formula C4H8O2
A mixture of CO, CO2 and O2 is contained within a 275 mL ?ask at 0?C. If the total pressure is 780 torr, the CO has a partial pressure of 330 torr and the CO2 has a partial pressure of 330 torr.
A rectangular block has dimensions 2.9 cm 4.0 cm 10.0 cm. The mass of the block is 625.0 g. What is the volume of the block?
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