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A compound contains only carbon and nitrogen and is 46.2% carbon by mass. A gaseous sample of the compound has a density of 2.05 g/L at 927 torr and 105 °C. What is the molecular formula of the compound?
if all the ice cream calories were to be butned off how long would it take him? i got 45 minutes?
find the methylmercury CH3Hg concentration in fish at which regular consuption at 50g/day becomes unacceptable health risk. use epa reference dose for methylmercury
What is the molar concentration of the solution? How many moles of solute are in the solution? What is the molar mass of the solute?
A close chemical relative of the banned insecticide DDT is methoxychlor (C16H15Cl3O2). Methoxychlor is currently used as a home insecticide. Calculate the mass percent of oxygen in methoxychlor.
Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts.
A stock solution was prepared by dissolving exactly 0.4000 g of pure ASA (180.16 g/mol) in 10.00 mL of NaOH and heating the solution to a gentle boil.
This indicates that the solution is now more acidic, and the reaction shifts to the right, working to lower the concentration of hydrogen ions, and return to equilibrium
What is the pH at the point during a titration when 30 mL of 0.200 M HCl has been added to 31 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3.Answer in units of pH.
The temperature is held at 271 K. Calculate the work done by the gas(in joules). to give the appropriate sign
What mass of natural gas {rm{(CH}}_4 ) must you burn to emit 268 kJ of heat?
have 2.50 ml of 4.00 M sugar solution. You add 217.3 ml of water to this solution. determine the concentration of the sugar solution after the water has been added.
What is the molar mass of adrenaline in a solution of 0.64 g of adrenaline in 36.0 g of CCl4 elevates the boiling point by 0.49?
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