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104.2mg CaCO3 was found through a gravimetric analysis experiment from a 0.2653g portion of a 1.5219g tablet. What is the mass of CaCO3 in the complete tablet?
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal
Calculate the freezing point and boiling point of a soultion of 383g of glucose dissolved in 400. g of water.
explain methods of industrial preparation of
we did the grignard reagent experiment and one of the post-lab questions iswhat kinds of solvents cannot be used? give
understanding of chemistry basics.1. the relative concentrations of reactant and product found when a reaction reaches
What should be the final volume of a solution containing 50.5g of solid KMnO4 be in order to prepare a 0.745 M solution
An airbag in?ates in less than 50 msec by the reaction of NaN3 to produce Na and nitrogen gas at 25 ?C. NaN3 → Na + N2 The volume of the airbag is about 30 liters, and it is ?lled to a pressure of 1.4 atm.
What is the percent dissociation of ascorbic acid if the solution has a pH = 5.50 and a pKa = 4.10?
the kinetic energy of a rolling billiard ball is given by rmke 12mv2 . suppose a 0.17-rm kg billiard ball is rolling
Dry ice is solid carbon dioxide. A 1.87g sample of dry ice is placed in an evacuated 4.03 L vessel at 22 degrees C. Calculate the pressure inside the vessel after all the dry ice has been converted to CO2 gas
anthraquinone contains only carbon hydrogen and oxygen. when 4.80 mg anthraquinone is burned 14.2 mg co2 and 1.65 mg
a mixture is 10.0 mole ethyl alcohol 75.0 mole ethyl acetate c4h8o2 and 15.0mole acetic acid. calculate the mass
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