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Consider a sample of a hydrocarbon (a compound consisting of onlycarbon and hydrogen) at 0.959 atm and 298K. Upon combusting theentire sample in oxygen, you collect a mixture of gaseous carbondioxide and water vapor at 1.51 atm and 375K. This mixture has adensity of 1.391g/L and occupies a volume four times as large asthat of the pure hydrocarbon. Determine the molecular formula of the hydrocarbon.
What is the ppm concentration? The molar extinction coefficienet is 87,000 M-1cm-1 and the molecular weight is 407.98 g/mol. The density of water is 1.00 g/mL
What is meant by the term lower in energy? Which is lower in energy, a mixture of hydrogen and oxygen gases or liquid water? How do you know?
A student performs a series of calorimetry experiments. She determines the calorimeter constant (Ccal) for her coffee cup calorimeter. She pours a 50.0 mL sample of water at 345 K into the calorimeter containing a 50.0 mL sample of water at 298 K.
what volume and mass of steam at 100 c and 760. torr would release the same amount of heat during condensation as 65.5
Briefly discuss the importance of the principles of solubility and miscibility when choosing extraction solvents
when power was turned off to a 30.0 gal. water heater the temperature of the water dropped from 75.0degc to 22.5degc.
When 5.88 g of CaO (s) is completely dissolved by HBr (aq), how many grams of calcium bromide are formed in solution
calculate the concentration in molarity of a naoh solution if 30.0 ml of the solution are needed to neutralize 15.0 ml
Teeth are made principally from the mineral hydroxyapatite, Ca5 (PO4)3OH, which can be dissolved in acidic solution such as that produced by bacteria in the mouth:
What is the volume occupied by 25.0 gm of Ar (g) at a temperature of 301K and pressure of 1.30atm.
Which of the following is true of the internal energy of a system and its surroundings during an energy exchange with a negative
write a 700- to 1050-word paper based on the week one readings on the field of gerontology in which you describe the
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