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An evacuated 1.00 L gas bulb was filled at STP (standard temperature and pressure) with 1.34 g of an unknown hydrocarbon (compound of carbon and hydrogen), which was then burned in excess oxygen, completely converting it to carbon dioxide and 2.41 g water. What is the molecular formula of the hydrocarbon?
A sample of Nitrogen gas expands in volume fro 1.6 L to 5.4 L at constant temperature. Calculate the work done (in joules) if the gas expands
Classify each of the following molecules as polar or nonpolar: a) GeH4; b) I2; c) CF3Cl; d) PCl3; e) BCl3; f) SCl2.
Describe in 75 words the structure of the carbon atom. What types of bonds does carbon form and why?
A student allowed several air bubbles to enter his eudiometer tube. He ignored the error and proceeded with the experiment. What effect will this error have on his final result? Explain your rationale.
how much potssium chlorae is needed to produce 20.0 mL of oxygen gas at 670 mm Hg and 20 degrees celcius.
explain how a soap removes dirt from our bodies. describe the process in relation to the secondary attractive forces that are operative.
78 mL of 2.5 M phosphoric acid is neutralized with 500 mL of potassium hydroxide. What is the concentration of the base?
NO (g) + O3 (g)-> NO2 (g) + O2 (g) For the reaction given, the frequency factor A is 8.7 x 1012 s-1 and the activation energy is 63 kJ/mol. What is the rate constant for the reaction at 75°C.
A container of water is heated from 23.5C to 85.0C. This process requires 21,900 Joules of heat. Calculate the mass of the water. (c=4.184 J/g-C)
please solve if 15.0 mL of 4.5M NaOH are diluted with water to a volume of 500.0 mL what is the molarity of the resulting solution
4Al + 3O2 = 2Al2O3 determine the percent yield if 124 g Al2O3 are produced when 3.0 moles of Al are reacted
If 153 mL of wet H2 is collected over water at 24°C and a barometric pressure of 725 torr, how many grams of Zn have been consumed
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