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How many pounds of CO2 are produced from the complete combustion of 1.00 gal of gasoline? Assume that gasoline has the formula C8H18 and has a density of 0.703g/mL.
An isolated quantity of an ideal gas at 294.2 K has a volume of 20.46 L at a pressure of 1.18 atm. What is the pressure of this gas sample when the volume is multiplied by four and the absolute tem
A 2.16-L sample of oxygen is collected at 99.6 kpa and 305k. If the pressure increases to 122.8 kpa and the temperature drops to 285k, what volume will the oxygen occupy?
What is the wavelength of a light ray if its frequency is 4.64 x 1014 s-1? Please put your answer in units of nanometers (nm).
What is the final gas volume if 0.10 mol He(g) is added to the balloon and the temperature is then raised to 92.0 celsius while the pressure and amount of gas are held constant?
What is the freeenergy change for the equilibrium between hydrogen iodide, hydrogen, and and iodine at 453°? I Kc=0.020
A bag of potato chips contains 595 mL of air at 35°C and a pressure of 765 mmHg. Assuming the bag does not break, what will its volume be at the top of the mountain where the pressure is 432 mmH
If the temperature in the laboratory is 24.5oC and the atmospheric pressure is 1.02 atm, what volume would be occupied by the carbon dioxide produced in this reaction (in cm3)?
What color is the universal indicator when a double replacement reaction occurs with HCl and NaOH. The HCl turns the indicator red and the NaOH turns the indicator purple.
Calculate the amount of energy needed in calories to heat 145 g of water from 22.3 degrees celsius to 75.0 degrees celsius. (water in j/g degree celsius = 4.184, cal/ g degree celsius = 1)
A sample of toothpaste was analyzed for its fluoride content by treating a 250 mg sample with an ionic strength buffer to extract F- followed by dilution to 100.0 mL.
one mole of silicon si has a mass of 28.086 g, and one mole of carbon has a mass of 12.011 g. what is the massof one mole of silicon carbide ?
The normal characteristics stretching frequency of the carbonyl group of a ketone in the IR spectrum is about 1720 cm-1. Pick out the carbonyl stretching frequency of dibenzalacetone in Fig.37.6. Why
What would the molar concentration of the tree sap have to be to achieve this pressure on a day when the temperature is 35?
What is the concentration of Cl in a solution obtained by mixing 210 ml of 0.620 M KCl and 640 ml of 0.350M
How much heat is required to take 13.9g of water from 35 degrees Celsius to steam at 120 degrees Celsius?
If the initial concentration of AB is 0.230 M, and the reaction mixture initially contains no products, what are the concentrations of A and B after 70 s?
Given the concentration of either hydrogen ion or hydroxide ion, use the ion product constant of water to calculate the concentration of the other ion at 298K
If you had a stoppered flask with basic luminol and then opened it to the air, why would the chemiluminescence be more pronounced than with the flask stoppered?
if a drop of NaOH is despensed from the buret but adherence to the side of the Erlenmeyer flask during its standardization, how will this affecy the molar concentration of the NaOH solution?
Assume you dissolve 2.56g of malic acid, C4H605 in half a liter of water (500g). Calculate the molarity, molality, mole fraction, and weight percentage of acid in the solution.
A solution is prepared by dissolving 307 g of sucrose (C12H22O11) in 684 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
What percentage of the original Ag+ remains in solution when 180 mL 2.10×10-2 M AgNO3 is added to 240 mL 3.76×10-2 M K2CrO4?
Calculate the fraction of atoms in a sample of argon gas at 391 K that have an energy of 12.7 kJ or greater
How many grams of aspiring were lost in the washing process you used to purify the product, assuming you used 50 mL of water for washing? The solubility of aspiring in water is 0.33 grams per 100 mL