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Conservatively, volumes of all glassware are expressed at 20 degrees C. The expansion coefficient of glass is 0.0025% per degree Celsius. If a flask if sound by calibration to contain 200.09 ml at 20 degrees C, explain what is the volume of the flask at 29 degrees C?
glycerol rmc3 rmh8 rmo3 is a substance used extensively in the manufacture of cosmetics foodstuffs antifreeze and
A backpacker wants to carry enough fuel to heat 2.2 kg of water from 30 C degree to 100.0 C degree. If the fuel he carries produces 36 kJ of heat per gram when it burns
The solution diluted in half by water (1 mL of X and 1 mL of H2O) has an absorbance at 425 nm of 0.8 and a molar extinction coefficient of 1.5 ? 103 M-1 cm-1. What is the molar concentration of the original solution of X? (1 cm cuvette)
calculate the ph of a buffer prepared by dissolving 240.0g of ammonium chloride and combining it with 400.0 ml of 12.0m
a gaseous mixture of and contains 34.8 nitrogen by mass. what is the partial pressure of oxygen in the mixture if the
Compute a wavelength of the yellow light emitted by a sodium lamp if the frequency of the radiation is 5.10*10^-14hz
a solution of 0.312 m koh is used to titrate 15.0 ml of a h2so4 solution. write the balanced chemical equation. what is
A solution is made by dissolving 535 mg of this protein in 10.0 mL water. Calculate the osmotic pressure of this solution at 37.0°C in mm Hg.
question the compound is packaged as a 10 solution density 1.0 gmol in water. if your dentist injects 0.50 ml of the
A 16.96 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 16.58 grams of CO2 and 3.394 grams of H2O are produced.
a gas is placed in a storage tank a pressure of 30.0 atm 20.3oc as a safety device there is a small metal plug in the
A camping lantern uses the reaction of calcium carbide, CaC2 (s) , and water to produce acetylene gas C2H2 (g) , and calcium hydroxide, Ca(OH)2 (s) . How many grams of water are required to produce 1.55 moles of acetylene gas
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