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What is the difference between cholesterol and lanosterol?
a 40.0 g sample of solid ammonium carbonate is placed in a closed evacuated 3.00 l flask and heated to 400 degrees c.
A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 870 mL at 40C and a barometric pressure of 755 torr.
A cube of metal measuring 14.2 mm on a side is placed in a graduated cylinder containing 25.3 mL of water. What is the final volume of reading in the measuring cylinder
Find the expected freezing point of a water solution that contains 268 g of aluminum nitrate, Al(NO3)3, in 8.50 kg of water.
oxygen gas reacts with powdered aluminum according to the following reaction 4als 3o2 g 2al2o3s. how many liters of
A solution consisting of .200 mol of methylbenzene (C6H5CH3) in 250 g of nitrobenzene (C6H5NO2)freezes at .40 degrees celsius
Calculate the capacity factor for decane on HP-1 column (25 m length, 0.25 mm I.D., 0.5 mkm film thickness) at 120 C. Explain.
One can approximate boiling point at reduced pressure using a pressure-temperature nomograph. What would you expect the observed boiling point to be at 50 torr for a liquid that has a boiling point of 280 degrees celsius at 760 torr
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water
Assume that methane is an ideal gas, the specific heat capacity of water to be constant and equal to 4.184 J/g/K over this temperature range, and the density of water to be 1.0 g/cm3. The combustion of methane is given byCH4 + 2 O2 ? CO2 + 2 H2O ?..
0.25 g of hydrogen chloride HCl is dissolved in water to make 8.0 L of solution. What is the pH of the resulting hydrochloric acid solution?
NH3(Ammonia ) is widely used in many household cleaners and as a fertilizer. Calculate How much ammonia (in units of mol) is produced when 7.8 mol of H gas react with an excess of N gas.
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