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Gold has a density of 19.3 g cm-3. How many pounds does a gold sphere weigh if it has a diameter of 5.20 inches? 1 pound = 0.4536 kg.
Assuming ideal gas behavior, 1.00atm, and 25 degrees Celsius, calculate the volume of CO2 produced by a power plant that produces 6 x 10(to the 9th power) per year.
If 0.80 g of sulfur dioxide at 10.00 atm pressure (pi) dissolves in 5.00 l of water at 25.0 degress celcius how much will it dissolve in 1 l of water at 9.00 atm pressure (p2) and the same temperat
A solution of ethanol (C2H5OH) in water is prepared by dissolving 63.4 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this
How many grams of oxygen are collected in a reaction where 265mL of oxygen gas is collected over water at a temperature of 25 degrees celcius and a total pressure of 696.
At a certain temperature and pressure 0.70 L of H2 reacts with 0.70 L of I2. If all the H2 and I2 are consumed, what volume of HI, at the same temperature and pressure, will be produced?
The next day the same cylinder of gas has a pressure of 4.690 atm, and its temperature is 8 degrees celcius. what was the temperature on the previous day?
In a refrigerator at 3°C, milk can be stored for about three times as long before turning sour. (i) Determine the approximate activation energy for the reaction that causes milk to sour.
A 0.4647-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.8635 g of CO2 and 0.1767 g of H2O. What is the empirical formula of the compound?
Peonin is a red pigment found in the petals of peony flowers. Why do you think peonin is bonded to two hexoses? What monosaccharide(s) would be produced by acid-catalyzed hydrolysis of peonin?
One electrode compartment consists of a silver strip placed in a solution of AgNO3, and the other has a iron strip placed in a solution of FeCl2. What is being oxidized, and what is being reduced?
At a certain temperature and pressure 4.2 L of N2 reacts with 6.3 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced? (L)
How much heat energy is required to raise the temperature of 0.367 kg of copper from 23.0 degrees C to 60.0 degrees C? The specific heat of copper is 0.0920 cal/(g*C).
The water and metal object reach a final temperature of 25°C. What is the specific heat of the metal object?
If each mole of gas occupies 44 L under the conditions of the explosion, how many liters of gas are produced? How many grams of N2 are produced in the detonation?
A 28.0-g sample of water at 250. K is mixed with 47.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
An aqueous solution of an unknown salt of ruthenium is electrolyzed by a current of 2.50 A passing for 50.0 minutes. If 1.309 g Ru is produced at the cathode, what is the charge on the ruthenium ion
Carbon dioxide at 223°C and 43 atm flows into the reactor at a rate of 600. L/min. What mass of urea is produced per minute by this reaction assuming 100% yield?
A 21.15 g piece of iron and a 25.05 g piece of gold at 100.0 degreesC were dropped into a 720.0 mL of water at 18.45 degreesC. The molar heat capacities of iron and gold are 25.19 J/(mol degreesC) a
Methane burns to the following reaction; CH4(g)+ 202(g)= 2H20(1)+ CO2(g) H=-890.4 kilojoules. Calculate the number of kilojoules obtained from the complete combustion of 100.0 g of methane.
At constant volume, the heat of combustion of a particular compound is -3973.0 kJ/mol. When 1.481 g of this compound (molar mass = 172.71 g/mol) was burned in a bomb calorimeter, the temperature of
Chlorine, Cl2, is produced commercially by the electrolysis of aqueous sodium chloride. How long will it take to produce 1.25 kg of chlorine if the current is 5.00 102 A?
What is the molar mass of a compound that takes 1.45 times as long to effuse through a porous plug as it did for the same amount of XeF2 at the same temperature and pressure? Answer in units of g/mo
Calculate the density, mole fraction, molarity, and molality of the solution. Assume water has a density of 1.00 g/cm3.
If 1.87 g of acetic acid(CH3CO2H) reacts with 2.31g of isopentyl alcohol(C5H12O) to give 2.96 of isopentyl acetate(C7H14O2), what is the percent yield of the reaction?