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Calculate the amount of heat absorbed when 50g of ice areheated to produce steam at 100 degrees celsuis. The specific heat capacity of water is 4.18 kj /kg K. The latent heat of fusion ofice is 334 kJ/ kg, and the specific heat of vaporization of wateris 2250 kJ/ kg.
Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 J/(g \degrees Celsius}) and 1.00 g/mL] and that no heat is lost to the calorimeter itself, nor to the surroundings.
When 0.250 grams of a polymer were dissolved in 22.9 mL of benzene at 21.6 degrees C, the osmotic pressure was found to be 0.044 atm. Calculate the molar mass of the protein.
Calculate the [HNO3] in each aqueous solution at 25C and classify each solution as acidic or basic
Calculate the theoretical yield of C2H5Cl when 106 g of C2H6 reacts with 236 g of Cl2 assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl
How many aluminum cans would you have to collect to earn $300 if each can weighs 18.75 g and Al is worth $800 per ton
how much energy is needed to convert 180 grams of ice at -10ordmc to liquid water at 10 ordmc? the molar heat capacity
Suppose you have made 1L worth of a mixture of methanol and water, by mixing 3 parts of methanol and 2 parts of water by mass. Assume for simplicity that the volume of the mixture is exactly equal to the sum of the volumes of the ingredients
Name two amino acids that are mostly positively charged at neutral pH. A Lysine and arginine B Histidine and arginine C Cysteine
You have a sample of bone collected from Nevada and you find that it contains strontium-90 and exhibits an activity of 2.5 Bq. How much strontium-90 was present in the bone when the animal died 45 years ago?(The half-life of 90Sr is 29 years.)
2-chlorobutane reacts much more slowly than 2-chloro-2-methylpropane in the silver nitrate test. Explain this difference in reactivity
Ribosomes have three tRNA bind sites. What are they called. Describe the elongation phase of prokaryotic translation and indicate the roles of these sites therein
If lead, which makes up 86.6% of galena and a particular ore contains 68.5% galena, what ,mass of ore is required to make a lead sphere with a 4.00 cm radius?
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