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A car heading north collides at an intersection with a truck heading east. If they lock together and travel at 28m/s at 14ºnorth of east just after the collision, how fast was the car initially traveling? Assume that the two vehicles have the same mass.
Half an alka seltzer tablet is dissolved and completely reacted in 25mL of HCL, and the gas produced displaces 0.240L of water from a secondary flask.
A solution of a dye was analyzed by spectrophotometry, and the following calibration data were collected. Dye Conc.(Y) (M) Absorbance(X) at 475 nm
The electron in the He+ ion is excited to the n = 2 principal state. What is the energy of the electron now
at a particular temperature and 2.00x10-2 m concentration versus time data were collected for the reaction and a plot
Predict the proton NMR spectrum expected for CH3CHBrCH3. Indicate the proton responsible for the observed peak. Sketch the spectrum.
If 100. mL of 1.60 M Na2SO4 is added to 200. mL of 2.40 M NaCl, what is the concentration of Na+ ions in the final solution? Assume that the volumes.
if 47.2 g of n2o4 is introduced into an empty 1.84 l container what are the partial pressures of no2 and n2o4 after
What is the theoretical yield of bismuth when 346 g of Bi2O3 reacts with excess carbon as shown below?
Nitrogen, a common pollutant from the combustion of auto fuels, produces several oxides. Assume that nitric oxide is the most common oxide formed. Prepare a written response to the following questions:
you have two flasks of equal volume. flask a contains h2at 0degc and 1 atm pressure. flask b contains co2 gasat 0degc
Calculate the concentration of the moles per litre (molarity) of the concentrated solution? Ps. im having trouble with the volume/ volume bit?
to find the by mass of a compound in a given sample.dissolving 3.00 g of an impure sample of calcium carbonate in
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