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Consider the two gases, NO and CO2. Ten grams of each are placed in balloons at STP. Which of the following is an accurate comparison?:
A) Partial pressure: CO2 > N2
B) KE: CO2 > N2
C) Volume: CO2 > N2
D) urms: CO2 < N2
E) Density: CO2 < N2
An object is coated with a layer of chromium that is 0.015 cm thick. If the object has a surface area of 15.3 cm squared, how many atoms of chromium are used in the coating. The density of chromium is 7.19 g/cm cubed.
Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (C6H5COONa). [Ka = 6.5 ? 10-5 for benzoic acid]
A sample of unknown hydrate of FeCl3 weighs 8.693g. After heating the sample to constant mass, the remaining anhydrous salt weighs 5.216g. What is the experimental formula for the hydrate
The isothermal compressibility of graphite is 1.56 × 10-7 bar-1. At what pressure is density equal to density of diamond?
Write an equation for the overall reaction in this experiment ( synthesis of salicylic acid from winter green oil) and use it to calculate the atom economy of the synthesis and your reaction efficiency
The sudden opening of the epiglottis and vocal cords releases this air explosively. Just prior to this release, what is the approximate pressure of the gas inside the lungs?
What are the steps needed in order to calculate the molar mass when given a freezing point depression. Please be as specific as possible.
How many hours are required for .235 mol of electrons to flow through ta circuit if the current is 1.68 A
we did the grignard reagent experiment and one of the post-lab questions iswhat kinds of solvents cannot be used? give
given the following two solutions 0.200 m hc2h3o2aq with pka 4.76 0.200m naohaq a mixture is made using 50.0 ml of the
He was befuddled when he isolated a material with a single 1H nmr signal at 1.64 δ and 13C nmr signals at 123 δ and 18.9 δ . Use epwa to show Bonnie what happened.
A diatomic gas does 315 J of work and also absorbs 580 cal of heat. What is the change in internal energy of the gas?
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