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The mass spectrum of an organic compound shows the relative abundances of M to be 57.66% and M 1 to be 11.85%. Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound. Natural abundances: 12C is 98.93% and 13C is 1.07%
An experiment shows that a 115 -,mL gas sample has a mass of 0.170 g at a pressure of 711 mm; Hg and a temperature of 33Celcius. What is the molar mass?
A sample of water is collected over water at a total pressure of 616.8 mmHg at 300 C. The vapor pressure of water at 300 C is 31.8 mmHg.
Lithium oxide is an effective absorber of carbon dioxide and can be used to purify air in confined areas such as space vehicles.
If you have an alcohol, and use a Dess-Martin oxidation reaction, what happens to the H+ on the alcohol, and what happens to the acetate? Please show the mechanism.
What is the volume of NH3 produced in the following reaction when 3.0 L of N2 reacts with 4.0 L of H2? N2 (g) + 3H2 (g) -> 2NH3(g)
What happens to the temperature of a liquid as evaporation occurs. A. The temperature of the liquid increases. B. The temperature of the liquid remains the same. C. The temperature of the liquid decreases. D. Liquids cannot evaporate
The rate of SN2 of tert-butyl bromide is faster in polar aprotic solvents than in polar protic solvents. Why? a. polar aprotic lower the potential energy of the product.
Calculate Kc for the following reaction. 2NO(g)+O2(g) 2NO2(g) when equilibrium is established at 500 Kelvin, there are 0.190 moles of NO2, 2.65*10^-4 moles NO, and 0.606 moles O2 in a volume of 0.759 liters
What is the molarity of sulfuric acid in the solution? How long (in seconds) would it take to fill a 55 gallon drum, and how much sulfuric acid (lb_m) would the drum contain? (use two dimensional equations)?
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.100 M HCLO with 0.100 M KOH. The ionization constant for HCIO is 4.0 x 10^-8 a) after addition of 50.0 ml of KOH
Calcium phosphate, silicon dioxide, and coke may be heated together in an electric furnace to produce phosphorus, as shown in the following equation: 2Ca3(Po4)2+6SiO2+10C=6CaSiO3+10CO +P4
Calculate the number of carbon atoms in 4.56 grams of ethanol (CH3CH2OH).
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