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what type of phase change does a substance undergo at .750atm and 30 degrees celsius?
For the titration of 87.95 mL of 0.1311 M NaOH with 1.2586 M HBr, find the pH of the solution within the receiving flask when 0 mL of HBr is added.
What is the vapor pressure in mmHg of a solution prepared by dissolving 5.00g of benzoic acid (C7H6O2) in 100g of ethyl alcohol (C2H6O) at 35 C?
using a sample that was dissolved in ch2cl2 mixed alumina evaporated the ch2cl2 loaded and began to run his column
3.00 mole of Ne has a total pressure of 24.5 atm at 25 degrees C. How many moles of He are in the flask?
Limestone, CaCo3, when subjected to a temperature of 900 degrees Celsius in a kiln, decomposes to calcium oxide and carbon dioxide. How much heat is evolved or absorbed when one gram of limestone decomposes?
How many grams of sodium azide, NaN3 are needed to react by the equation below in order to inflate a 50.0: air bag with N2(g) at 298K and 1.20 atm? NaN3(s) -------> Na (s) + N2
Consider the following reaction at 298 K. 2 SO2(g) + O2(g) ? 2 SO3(g) An equilibrium mixture contains O2(g) and SO3(g) at partial pressures of 0.42 atm and 1.5 atm, respectively. Determine the equilibrium partial pressure of SO2 in the mixture.
When a sample of Vanillin weighing 2.500g burns in Oxygen, 5.79g of carbon dioxide and 1.18g of water is obtained. What is the empirical formula of Vanillin?
At what wavelength do you measure the change in absorbance to assay for enzyme X? Does the absorbance increase or decrease over time?
3agno3 na3po4 --gt ag3po4 3nano3silver nitrate and sodium phosphate are reacted in equal amounts of 200. g each. how
How many Grams of NH3 are consumed when 12.5 grams of 02 react completely in the following equation? I am not sure exactly how to solve this.
flask apparatus, which now contains 2.00 L H2 at a pressure of 360 torr and 1.00 L N2 at an unknown pressure. if the total pressure in the flasks is 320 torr after the stopcock is opened, determine the initial pressure of N2 in the 1.00-L flask.
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