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Oxygen gas effuses at a rate that is 1.49 times that of an unknown gas (at the same temperature). What is the identity of the unknown gas?
Calculate the molar solubility and the solubility of iron (II) hydroxide in pure water then in 0.125M NaOH(aq).
If 20.0 g acetylene is allowed to completely react with oxygen , how many g of O2 are reacted? 2C2H2 + 5O2→ 4CO2 + 2H2O
Prepare a standard curve of absorbance versus known cobalt nitrate concentrations and determine the concentration of cobalt (H) ion obtained from a soil sample.
How much heat is necessary to change 500 g of ice at 10°C to water at 20°C? A quantity of steam (200 g) at 110°C is condensed, and the resulting water is frozen into ice at 0°C. How much heat was removed?
what mass of limestone is required to remove all the sulfur dioxide formed by the combustion of 7.5 104 kg of coal that is 0.33 mass % sulfur?
A certain amount of gas at 25degrees celcius and at a pressure of 0.800atm is contained in a glass vessel .suppose that the vessel can withstand a pressure of 2.00atm.How high can you raise the temperature of the gas without bursting the vessel.
What mass of precipitate forms when 124.5 mL of 0.660 M NaOH is added to 517 mL of a solution that contains 10.9 g aluminum sulfate per liter?
Would it be a good idea for a person to take a couple of aspirin tablets before attending a cocktail party? Explain your reasoning. This needs to be from a chemistry stand point.
Complete the reaction of salicylic acid and 4-aminobenzenesulfonic acid by drawing the expected product.
A weak acid (HA) has a pKa of 4.303. If a solution of this acid has a pH of 4.990, what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.)
Gasoline (assumed to be 100% octane) is combusted in your car according to the following chemical reaction:
For a material to float on the surface of water, the material must have a density less than that of water (1.0 g/mL) and must not react with the water or dissolve in it. A spherical ball has a radius of 0.50 cm and weighs 2.0 g.
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