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According to the ideal gas law, a 9.814 mol sample of nitrogen gas in a 0.8071 L container at 502.0 K should exert a pressure of 500.9 atm. By what percent does the pressure calculated using the van der Waals' equation differ from the ideal pressure?
Pure water containing no arsenic was spiked with .40micrograms arsenate/L. Seven replicate determination gave .39 ,.40, .39, .41, .36, .35,.and .39 microgram/L. Find the mean percent recovery of the spike and the concentration detection limit
In the following reaction, how many grams of NaBr will produce 244 grams of NaNO3? Pb(NO3)2(aq) + 2 NaBr(aq) PbBr2(s) + 2 NaNO3(aq)
Benzene (C6H6) as a gas burns in air at 200% theoretical air. In answering the following parts, you may assume the products of combustion are CO2, H2O, O2, and N2. For products and reactants at 25°C, calculate the heat of combustion of benzene in ..
calculate the resulting molarity when 50.0ml of 2.13M sodium Chloride solution is mixed with 80.0ml of 1.45M
The tartness of some wines is due to high concentrations of L-malate. Draw out thesequence of reactions showing how yeast cells synthesize the net production of L-malate from pyruvate under anaerobic conditions without any net NADH production. Show ..
Problem- For similar light intensity, compact flourescent bulbs use about 25% of the energy of incandesant bulbs. Lets say you replaced a bulb of 75 W with a flourescent bulb and that your utility charges $0.15/kW-hour. How many dollars would you ..
A 2.53g of solid NaOH is dissolved in 100g of water in a coffee cup calorimeter, all the reagents initially being at 20 degrees Celsius. Calculate the final temperature of the solution obtained, given the fallowing information: NaOH (s) ----> NaOH..
How many moles of excess base are present? How many additional mL of 0.100 M HCl would be required to neutralize the solution?
As the excess of nickle is titrated by EDTA(y4-), the comples with cyanide does not react. if 12.75mL of an unknown CN- solution is treated with 25mL of a 0.0140 M Ni2+ solution, the excess of Ni2+ needs10.21mL of 0.012M EDTA afterward. Determine ..
Hospital patients are administered oxygen from an pressurized hyperbaric oxygen chamber. 600.0 L of oxygen is compressed in a cylinder at 160.0 atm. What volume of oxygen can a cylinder supply at the given pressure.
An element in one of the 10 smaller groups near the middle of the periodic table is known as the?
what mass of sucrose c12h22o11 must be mixed with 543 grams of h2o to make a solution with an osmotic pressure 8.00 atm
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