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Solid NaHCO3 is heated to 90°C. At equilibrium the total pressure of the gases produced is 0.545 atm. Calculate ΔG° at 90°C for the reaction
(This is the volume that could come out of solution suddenly, causing the painful and dangerous condition called the bends, if the diver were to ascend too quickly.) Assume that Henry's constant for
What affect would each of the following changes in procedure have had on the calculated percentage of fat found for your meat product?
An aqueous solution of a nonelectrolyte boils at 100.32C. What is its expected freezing point?
A gas-filled balloon having a volume of 2.50 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°
If a bottle of nail polish remover contains 172mL of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788g/mL .
Calculate the amount of heat needed to boil 50.6g of ethanol (CH3CH3OH), beginning from a temperature of 24.4C . Round your answer to 3 significant digits. Also, be sure your answer contains a unit
Calculate the mass of propylene glycol that must be added to .360 kg of water to reduce the vapor pressure by 2.87 torr at 40 degrees celsius (Ph20 at 40 degrees = 55.3)
Water boils at 373 K.The molar enthalpy of vaporation for water is 40,7 kJ/mo1.If one mole of water is at 373 K when it starts to boil its temperature when it all has boiled will be?
If you had a saturated solution of NaNo3 at 40 degrees Celsius that contained 85 grams of water, how much of the salt would you need to add to have a saturated solution at 70 degrees Celsius?
Calculate the volume of oil spilled in L and in barrels and calculate the percentage the total of the oil spill was compared to daily use in the USA. (c) If all of this carbon were converted to CO2,
A assessor is measuring the perimeter of a rectangular lot. He measures two adjacent sides to be 50.11 ± 0.05 m and 75.12 ± 0.08m. These measurements are independent. Estimate the per
A vertical line on a phase diagram indicates that a compound is formed with a distinct chemical formula corresponding to the line's position on the graph.
Calculate the energy levels of the pi-network in octatetaene, C8H10, using the particle in the box model. To calculate the box length, assume that the molecule is linear and use the values 135 and 1
Compute the equilibrium constant, Keq, for the reaction of equimolar amounts of acetophenone, C6H5COCH3, and hydroxide ion to generate the enolate ion.
The solubility of oxygen in water is 14.74mg/L at 0 celcius and 7.03mg/L at 35 celcius. Estimate the solubility at 50 celcius.
A 1.70-g sample of a large biomolecule was dissolved in 14.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecu
Analysis shows that the tank pressure is 1.34 atm (at 24.0°C) if the CO2 is removed. Another experiment shows that 0.0870 g of O2 can be removed chemically. What are the masses of CO and CO2 in
Using p-aminobenzoic acid, give equations showing how procaine and procaine monohydrochloride could be prepared. which of the two possible amino functional groups in procaine will be protonated fir
Kilimanjaro in Tanzania is the tallest peak in Africa (19,340 ft.). On a particular day, the barometric pressure at the top of the mountain was 341 torr. On that day, at what Celsius temperature did
A solution of 120 mL of 0.150 M KOH is mixed with a solution of 260 mL of 0.200 M NiSO4. How many grams of the precipitate can be formed?
What is the condensed structural formula of nonane?
A sample of gas occupies a volume of 364 mL at 1.28 atm and 27 oC. Calculate the volume of the gas if its temperature is changed to 57.0 oC while its pressure is held constant.
Kilimanjaro in Tanzania is the tallest peak in Africa (19,340 ft.). On a particular day, the barometric pressure at the top of the mountain was 359 torr. On that day, at what Celsius temperature did