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The molar heat capacity at constant magnetic field of a paramagnetic solid at low temperatures varies with the temperature and field according to the relation
CH = ((B + CH2)/T2) + DT2,
Where B, C, and D are constants. What is the entropy change of n moles of material when the temperature changes from Ti to Tf while H remains constant at the value H0?
A 375mL sample of gas is initially at a pressure of 721 torr and a temperature of 32°C. If this gas is compressed to a volume of 286mL and the pressure increases to 901 torr, explain what will be the new temperature of the gas (reported to three s..
how many grams of water can be produced from the combination of 25 grams of hydrogen and 225 grams of oxygen? how much
The solubility of magnesium fluoride, MgF2, in water is 0.016 g/L. What is the solubility (in grams per liter) of magnesium fluoride in 0.013 M sodium fluoride, NaF
Problem- The half life for a given FIRST ORDER reaction is determined to be 2.5 min. What is the concentration of the reactant remaining after 7.0 minutes if the initial concentration of A is 2.4 M
A 23.45g piece of iron and a 29.95g piece of gold at 100.00C were dropped into 530ml of water at 16.05C. The molar heat capacities of iron and gold are 25.19 (j/mol x C) and 25.41 j/(mol x C). respectively. What is the final temperature of water a..
Model does not have to be made of the specified material but should resemble it. The design on the model should match the proposed design.
how many grams of methane must be combusted to heat 1.20g of water from 23.0c to 93.0c assuming as a product and 100
Aspirini has a density of 1.40 g/cm^3 what is the volume (in cubic centimeters) of an aspirin tablet weighing 2.8x10^2mg
A sample of gas at 310 Kelvin and 1.2 atmospheres has a density of 2.78 g/L, what is the molar mass of this gas? Show all of the work used to solve this problem.
A pentapeptide was found to contain the amino acids Phe, Gly, Met, Ala, and Ser. N-Terminal analysis yielded the PTH derivative of alanine. Partial hydrolysis of the pentapeptide yielded the dipeptides
You have 50 mL of 0.010 fully protonated histidine. how many milimoles of base must be added to bring histidine solution to pH equivalent to the pI of histidine.
The solution was then placed in the spectrophotometer as well as an absorbance was obtained and after a few calculations the molar concentration was computed to be 3.5 × 10-6 M. Explain what was the concentration of the original solution
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