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Calculate the number of moles needed to provide 20g of glucose from a 60% glucose solution
In a candy factory, the nutty chocolate bars contain 22.0 by mass pecans. If 4.60 of pecans were used for candy last Tuesday, how many of nutty chocolate bars were made
sample of H20 with a mass of 46.0 grams has a temperature of -58.0 degrees Ceslius. How many joules of energy are necessary to heat the steam from 100.0 degrees celsius to 114.0 degrees
The energy of a vibrating molecule is quantized much like the energy of an electron in the hydrogen atom. The energy levels of a vibrating molecule are given by the equation
A patient recieves all her nutrition from fluid given through the vena cava. every 12 hours, 750mL of a solution that is 4%(m/v) amino acids (protein) and 25% (m/v) glucose (carbohydrate) is given along with 500 mL of a 10%t (m/v) lipid (fat)
1. what structural characteristics of polystyrene polyacrylonitrile and polytetrafluoroethylene have an effect on the
Vapor pressure of water at 25 deg C is 24 mmHG and that of pure methanol is 120 mmHG. What is the vapor pressure above the solution of methanol and water at 25 deg C. What is the mole fraction of methanol in the vapor above this solution. 32 g of ..
If equal masses of H2 and O2 (100.0 grams each) are reacted together to produce water, how many grams of water could be produced.
If a contemporary wooden chair were somehow preserved to for the next 3,900 years, what C-14 dacay rate should be expected from the wood used to make the chair? (t1/2 = 5730)
How many moles of hydrogen are present in a 26.3 mL sample at 19 degrees celsius and 744 torr?
will the reaction occur if the partial pressures of each of the components are P(Cl2) = 4.2 bar, P(F2) = 3.3 bar, and P(ClF) = 0.092 bar. Is this more or less favorable than standard state conditions
How many photons are required to heat 275 mL of coffee from 25.0 C to 62.0 C. Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 J/(g K), as water over this temperature range. Express the number of photons n..
When ethyl ether is heated with excess HI for several hours, the only organic product obtained is ethyl iodide
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