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What is the stoichiometric coeffiecient for oxygen gas when the following reaction is balanced using the smallest whole number coefficients? C12H26(g) + O2(g) --> CO2(g) + H2O(g) Which of the following substnaces is/are electrolyte? a) O2 b) CH3CH2OCH2OH c)Na2CO3 d) NONE e) PCL3
The volume of a sample of gas, initially at 25oC, increase from 158 ml to 450 ml. What is the final temperature (C) if the pressure in the container is kept constant.
Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.
Which factors affect the position or exact frequency of vibration-rotation transitions. a. pressure
what is the minimum distribution coefficient that permits the removal of 99% of a solute from 50 mL of water with a. two 25mL extrations with toluluene
Draw every stereoisomer for 1-bromo-2-chloro-1,2-difluorocyclopentane. Use wedge-and-dash bonds for the substituent groups, and be sure that they are drawn on the outside of the ring, adjacent to each other.
How much heat energy, in kilojoules, is required to convert 65.0g of ice at 18.0 degrees celcius to water at 25.0 degrees celcius.
Estimate the mass of water that must evaporate from the skin to cool the body by 0.50^circ C. Assume a body mass of 85 kg and assume that the specific heat capacity of the body is 4.0 {rm{J}}/{rm{g}}; cdot ;^circ {rm{C}}.
Complete and balance the following redox reaction reaction under basic conditions: CrO4^2-(aq) + SO3^2- ? Cr(OH)3(s) + SO4^2-(aq).
At 40°C, the vapor pressure of heptane is 92 torr. If a solution is made of naphthalene in heptane and has a vapor pressure of 82 torr, what is the mole fraction of naphthalene? Assume ideal solution behavior.
Tin carbonate solid is treated with nitric acid to dissolve tin carbonate to give tin nitrate, water and carbon dioxide. a) Write a balanced equation for the reaction.
A star is estimated to have a mass of 1x10^36 kg. Assuming it to be a sphere of average radius 7.5x10^5 km, calculate the average density of the star in units of grams per cubic centimeter.
Dissolved in water to produce a 0.0170 M solution. The pH of the resulting solution is 2.33. Calculate the Ka for the acid.
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