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Vitamin D, responsible for strong bones, has a molar mass of 384and is known to be 84.4% carbon. How many carbon atoms are there in each molecule of Vitamin D?
What is the most important type of intermolecular attractive force that operate in each
if a sample of gas is at 2 atm and is at 15 degrees celsius, what would be the new pressure in the gas if the gas is heated to 100 degrees celcius?
A 120 pound woman working in an office consumes about 2200 kcal/day, whereas the same woman climbing a mountain needs 3400 kcal/day.
If the mass of NaCl is 11.69 g. What would be the number of moles of all solutes (including cations and anions)
at 1000 k a sample of pure no2 gas decomposes.2 no2g 2 nog o2gthe equilibrium constant kp is 158. analysis shows that
The best means of personal protection from radiation for emergency responders is the implementation of three basic principles: time, distance and shielding. Please show your work when answering the following questions:
Determine the rate law and the value of k for the reaction at 25oC
You set off from the bottom of the pile in a space craft that can travel at the speed of light (3.00 x 10^8 m/s). How long, in years, will it take you to reach the top of the pile of pennies? Show all work.
The temperature of the mixture is 0? , and the total pressure is 1.00 atm . How many grams of helium are present in the gas mixture? Mass of He =?
28.80 mL of a 0.1726 mol/L EDTA solution is required to titrate a sample to the equivalence point. How many moles of divalent metal cations were in your sample
used as a fixer in the field of photography. Calculate the percentage composition, by mass, of each element in sodium thiosulphate.
The density of tungsten is 19.35 g/cm3. A sample of tungsten is placed in a graduated cylinder containing 30.0 mL of water and the water level rises to 34.0 mL. What is the mass in grams of the sample of tungsten?
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