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It is found that the boiling point of a binary solution of A and B with XA = 0.4217 is 96 oC. At this temperature the vapor pressures of pure A and B are 110.1 kPa and 94.93 kPa respectively. (a) Is
The mixture is to sell for $13 per kilogram. Find how much of each should be used to make 180-kilogram mixture. How many kilograms of the Kenyan coffee should be in the mixture?
Question: The standard reaction Gibbs energy of the decomposition of CaCO3 to CaO and CO2 at 1173 K is 0.178 kJ mol-1. Calculate the equilibrium constant for the decomposition.
Christine went shopping and bought each one of her 6 nephews a gift, either a video that costing $14.95 or a CD costing $16.88. She spent a total of $95.49 on the gifts. How many videos and how m
Write a balanced equation for the photosynthesis reaction in which gaseous carbon dioxide and liquid water react in the presence of chlorophyll to produce aqueous glucose (C6H12O6) and oxygen gas.
The two games together earn $3725.50 for the team. Thursday's game generates $397.50 less than Sunday's game. How much money was taken in at each game?
The NaBr,1-butanol and water are combined. Sulfuric acid is added and the mixture is fefluxed. After reflux two layers are present. I need to distill the mixture until no more water-insoluble dropl
A camper uses a pole to hold up an awning. the pole is at a 60 degree angle and has 30 pounds of force on it. what is te horizontal component of the force in pounds?
Calculate the velocity (in ms-1) of photoelectrons ejected from a sodium metal surface, which has a work function of 2.30eV, by ultraviolet light of wavelength 254nm. The electrons mass is 9.109 x 1
From an airplane, Janara looked down to see a city. If she looked down at an angle of 9 degrees and the airplane was half a mile above the ground, what was the horizontal distance to the city.
The equilibrium constant for the reaction 2HI(g) = I2(g) = H2(g) is K = 0.11. What is the equilibrium concentration of ICl(g) if the equilibrium concentrations of I2 (g) and H2(g) are both 0.075 M?
Assume Mathew has to put tape on all edges of the posters, and no tape is wasted, how many feed of the tape will be needed?
Calculate the energy change in a system in which 56.38 kJ of heat is given off at 2.360 atm pressure and the volume changes from 1.136 L to 0.736 L.
How many moles of methane would need to be reacted in order to heat 4.00 kg (~ 1 gallon) of water (Cs = 4.18 J/g-K) from room temperature (25° C) to boiling (100° C)?
A pair of earrings has a blue wedges that are all the same size. One earring has a 25 degree angle yellow wedge. the other has a 14 degree angle, Find the angle measure of the blue wedge.
The heat of vaporization of CCl2F2 is 289 j/g.What mass of this substance must evaporate in order to freeze 160g of water initially at 16c? (The heat of fusion of water is 334 j/g the specific heat
What is the total area of a right rectangular prism with a height of 8 feet, a width of 10 feet, and a thickness of 12 feet?
Question: The concentration of glucose in blood is approximately 90mg/100 mL. What is the weight/volume percent concentration of glucose? What is the molarity of glucose?
If the oxidizing agent gains 3 moles of electrons, and the reducing agent loses 2 moles of electrons, calculate the work done by a voltaic cell if the emf is 0.985 V.
How many cubic inches of ice cream can an ice cream cone hold (within the cone) if its height is 4 inches and the diameter of its base is 2 inches?
Calculate the mass of CO2 emitted into the atmosphere upon accelerating the SUV from 0.0 mph to 67.0 mph. Assume that the required energy comes from the combustion of octane with 30% efficiency.
How many liters of pure oxygen gas, measured at 45.2 oC and 104.0 kPa, are required for the complete combustion of 5.60 liters of acetaldehyde gas (C2H4O), measured under the same conditions of temp
Suppose the dimensions of a 9-inch screen are 5.5 inches by 7.5 inches. Find the dimensions of an 18 inch TV and a 35 inch TV.
A student adds 8.50 mL of a 0.350 M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
A 30-foot cable is suspended between the tops of two 20-foot poles on level ground. The lowest point of the cable is 5 feet above the ground. What is the distance between the two poles?