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A sample of gas weighs 4.542 grams and has a volume of 870.0 mL at 945.0 torr and 39.0 degrees Celsius. What is its molar mass?
a 97 gram solution of silver nitrate contains 21 grams of AgNO3. what is the percent by mass of silver nitrate in this solution?
Write balanced half-reactions and the overall spontaneous reaction. (Type your answer using the format [NH4]+ for NH4+. Use the lowest possible coefficients.)
An experiment shows that a 249 -mL gas sample has a mass of 0.433 g at a pressure of 750 mm Hg and a temperature of 29?. What is the molar mass of the gas?
How many moles of Mg(No3)2 are in this 0.1L portion? How many grams of Mg(NO3)2 was measured out to make this solution?
If 300kJ of heat are exchanged between the system at -5degrees C and its surroundings at 30degrees C, the entropy of the systems plus
The equilibrium constant of the water-gas-shift reaction is 200, and the mole fraction of hydrogen at the outlet is 0.75. Using the extent of reaction method, how much additional steam is fed into the water-gas-shift reactor?
dehydrohalogenation of 2-bromo-2,3-dimethylbutane with a strong base can lead to multiple products with the zaitsez product being the favored product. what is this product.
What is the mole fraction of water in this solution? What is the vapor pressure of the solution at 25 degrees Celsius, given the vapor pressure of pure water at 25 degrees Celsius is 23.8torr
Calculate the molality of a solution that contains 51.2 g of naphthalene, C10H8, in 500. mL of carbon tetrachloride. The density of CCl4 is 1.60 g/mL.
From your calculation of the specific rotation for L-erythrose 4-phosphate in Q4. above determine the specific optical rotation, [?]D for D-erythrose 4-phosphate? A) -100 B) -10 C) 100 D) 10 E) -1
What percentage error would be introduced in a 35.0 mL sample of liquid if the air bubble comes out of the tip of the buret while the liquid sample is being transferred?
This time took a one-hour break after adding the acetic anhydride but before adding the sodium acetate solution. The student obtained no product. Explain, with chemical equations and/or formulas, what went wrong.?
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