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How many grams of can be produced from 3.15 of ? Express your answer numerically in grams.
Suppose that, from measurements in a microscope, you determine that a certain bacterium covers an area of 1.50 μm2
determine the freezing point of this solution If 18.0 grams of a nonelectrolyte that has molar mass = 44.2 g/mol are combined with 110.0 grams of the solvent,?
The student did not pre-heat the gravity filtration apparatus in Part 3. c) The student forgot to cool 5 mL of solvent in Part 5 and washed the crystals with room-temperature solvent.
Calculate the volume of a solution NaOH c=0.2 mol/l necessary to neutralize v=200 ml of solution HCl c=0.1 mol/l.
The lethal doses (expressed in ppm by volume) of two gases A & B are the same and equal to 20 ppm. Indicate how many mg of each gas would be needed to reach the lethal concentration in a room of 46m^3.
completely evacuated and then filled with an unknown gas to a pressure of 747 mmHg at 22 degree C. If the glass bulb gained 0.103 g in mass, what is the molar mass of the gas?
A buffer solution is prepared by dissolving 0.075 moles of HOBr and 0.075 moles of NaOBr in 500mL of solution. Calculate the pH of this buffer. (HOBr: Ka = 2.4 * 10^-9)
The product is a cyclopentyl ether (five carbons with an oxygen). Then attached to a carbon directly adjacent to the oxygen is a methyl bromide group.
suppose a 5.00 L sample of diatomic oxygen at a given temperature and preesure contains 1.08x10^23 molecules. How many molecules would be contained in 5.00L of hydrogen?
What is the density of a block of marble that occupies 253 cm and has a mass of 752 g? Answer in units of g/cm
A chemistry student prepares acetone by decomposing 12.3 g of calcium acetate. If the student collected 2.50 g of acetone and the theoretical yield is 3.42 g.
Provide the name of the major alkene product that results when (2S,3S)-2-bromo-3-methylpentane is treated with sodium methoxide in
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