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A mixture of gases contains 0.26 mole CH4, 0.38 mole C2H6, and 0.18 mole C3H8. The total pressure is 1.50 atm. Calculate the partial pressures of the gases.
The density of liquid water at 0 degrees C is 0.9987 g/cm cubed; the density of ice at this same temperature is 0.917 g/cm cubed.
Dichloromethane has a vapour pressure of 10 Torr at -43.3 deg C and 40 Torr at -22.3 deg C. Calculate its enthalpy of vapourization in kJ/mol.
There is a way for natural gas fuel cells to be considered a low-carbon energy source, but they have to get their fuel from a specific source. What is that source, and why does that qualify as a low
Consider 25.0 g of water at 21.7°C that are mixed with 25.0 g of water at 43.3°C in a foam cup calorimeter. The equilibrium temperature reached was 30.4°C. Calculate the calorimeter con
A solution is prepaired by mixing 90.0 mL of 5.00 M HCl adn 30.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+], [OH-], and the pH of this solution.
Methyl-1-hexanol (A) was reacted with NaBr/H2SO4 to give (B), which upon treatment with magnesium in diethyl ether formed an intermediate. Why is anhydrous ether used in this reaction?
a) How many grams of CO2 are in the ?ask (described in part b)? b) Why do we measure the volume of the ?ask with water rather than using the volume listed on the side? c) Why is the ?ask not ?rmly sto
For each trial, enter the amount of heat gained by the chemical system of ammonium nitrate, qrxn. The specific heat of water is 4.184 J/goC. Report your answer using 4 digits.
the henry law constant kH for O2 in water is 5.66*10-5g L-1 torr-1 at 20 degrees C. calulate the concentration of dissolved O2 in g L-1 for an O2 gas pressure 580 torr.
A bottle containing 300 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
Suggest at least one characteristic absorption each in the IR spectra of 9-flurenone and 9-hydroxyfluorene that could be used to distinguish between these two compounds.
The faint pink murexide indicator end point which only titrates the calcium ions. Calculate the mass percentage of the original sample that was CaC2O4.
Sodium borohydride reacts very slowly with ethanol to evolve a gas. Write a balanaced equation for this reaction.
If 32mL of 7.0M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?
The percentage yield of Nh3 from the following reaction is 85%? What actual yield is expected from the reaction of 1.00kg N2 with 225g H2? N2+3H2=2NH3
An aqueous solution of CaCl2 has a vapor pressure of 83.0mmHg at 50 C . The vapor pressure of pure water at this temperature is 92.6mmHg . What is the concentration of CaCl2 in mass percent?
A 25.00 mL sample of the 1.00 L solution was reacted with excess AgNO3 and 0.3800 g of an AgCl precipitate formed. What was the mass % of D2O in the original sample of enriched water?
The compound As2I4 is synthesized by reaction of arsenic metal with arsenic triiodide. If a solid cubic block of arsenic (d 5.72 g/cm3) that is 3.00 cm on edge is allowed to react with 1.01 1024 m
How many grams of water can be cooled from 45 C to 23 C by the evaporation of 63 of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g.
Classical theory and the observations of Dulong and Petit indicate that the total energy of vibration of iron atoms is 3RT per mole. Assuming this to be true,
Calculate the empirical formula of hydrated ferrous ammonium sulfate, Fea(NH4)b(SO4)c(H2O)d, from the following data.
If a sample containing 2.00 mL of nitroglycerin (density=1.592 g/mL) is detonated, how many total moles of gas are produced?