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If the sample contains a combined total of 1.75 grams per mole and has a total mass of 51.0 grams, what are the percentages of CO2 and Ne in the sample by mole?
What is the theoretical yield of bromobenzene in this reaction when 30.0 g of benzene reacts with 65.0 g of bromine?
if 100 mL of 0.100 M NaCl is added to 100 mL of .01 M NaCl, what is the concentration of Na ions in the final solution?"
a cylindrical glass tube 15cm in length is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 9.64g. Calculate the inner diameter of the tube in centimeters. The density of ethanol is 0.789 g/mL
a 25g sample of alloy at 95 degrees celsius is placed in 50.g of water at 20 degrees celsius if the final temperature reached by the alloy sample and water is 27 degrees celsius what is the specific heat?
If the walls in a room are 955 square feet in area, and a gallon of paint covers 15 square yards, how many gallons of paint are needed for the room?
What is the total number of joules absorbed by 65.0 g of water when the temperature of the water is raised from 25.0 degrees celsius to 40 degrees celsius?
What length of time (minutes) would be required to plate 12.25 g of nickel from a NiCl2(aq) solution?
in the titration of 25.00ml of 0.100M CH3COOH, calculate the number of milliliters of 0.200 M NaOH that must be added to reach a pH of a)3.85, b) 5.25,
Calculate how many molecules of C 2 H 6 S (ethyl mercaptan )are contained in 1.0 micro liter sample if the given density = 0.84 g/mL
What is the pH of this buffer solution? (Neglect the volume change that occurs with addition of solid sodium nitrite) b.) Calculate the pH when 2.00 mL of 0.0275 M NaOH are added to 50.0 mL of buffer solution.
Three compounds are to be separated using HPLC. Compound A and Compound B have the same polarity but are more polar that Compound C. Compound A and Compound C have the same molecular weight (5000), and Compound B has a molecular weight of 26,000.
With respect to the corrosion of steel in concrete, explain the significance of the following terms: carbonation of concrete, passivity of steel, electrical resistivity of concrete, state of oxidation of iron.
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