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A sealed balloon is filled with 1.30 L of helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 180. torr and the temperature is -32°C. What is the change in volume of the balloon as it ascends from 1.00 atm to a pressure of 180. torr?
The hydrogen gas generated is collected over water at 20.0 C. The volume of the gas is 246 mL at 760 mm Hg. What mass of zinc was used
Calculate P,V and T for initial and final states of each process and produce a plot of the two processes on a P,V diagram. Without resorting to equations, explain why the result for part (b) is greater than or less than the result for part (a).
balance the equation and answer in terms of moles. the disinfectant hydrogen peroxide h2o2 decomposes to form water and
The sample required 3.7 mL of 0.0013 M NaOH to titrate the sample to neutrality. What was the pH of the gastric juice? Hypochloridia is defined as having a stomach pH greater than 4. Was the patient suffering from hypochloridia?
what masses ofnbsp calcium sulfate and phosphoric acid can be produced from the reaction of 1.0kgnbsp calcium phosphate
a chemist wants to prepare 0.50 m hcl. commercial hcl is 12.4 m. how many milliliters of the commercial acid does the
Determine what mass of sulphuric acid would be needed to mix with 0.75 mol of sodium hydroxide(NaOH)?
The equilibrium expression for the reaction: 2C(s) + 2H2O(I) ? CH4(g) + CO2(g) is Keq = [CH4][CO2]. If an equilibrium reaction shifts to the right when the system is cooled, this indicates that the reaction is endothermic
Given this information, what is the order of reaction with respect to A and with respect to B? What is the value of the rate constant
We are now processing magnesium fluoride from a mine in Elko. It can be used to coat binocular lenses. The Ksp for magnesium fluoride is 3.7 x 10^-8 at room temperature. Determine how many grams of magnesium fluoride is precipitated out if we plac..
What is the conversion calculation for M to grams of KBr for the following: What mass of potassium bromide is contained in 135 mL of 0.251 M Kbr solution
The saturation value of DO is 8.5 mg/L. The deoxygenation coefficient (kd) is 0.61/d, and the reaeration coefficient (kr) is 0.76/d. Assume complete and instantaneous mixing of the sewage and river. What is the minimum DO downstream
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