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An iron bar weighed 664 g. After the bar had been standing in moist air for a month, exactly one-eighth of the iron turned to rust (Fe2O3). Calculate the final mass of the iron bar and rust.
Solid aluminum metal and diatomic chlorine gas react spontaneously to form a solid product. Give the balanced chemical equation (including phases) that describes this reaction.
Exactly 150mL of 0.13M HNO2 is titrated with 100mL of 0.13 M NaOH. What is the pH at the endpoint.
Calculate the final temperature of the helium inside the cylinder. Assume helium to be an ideal gas with Cp=(5/2)R.
A tank initially at a pressure of 6.70 atm contains 20.0 moles of oxygen gas at 25.0 degrees celsius. Its temperature is then increased to 45.0 degrees celsius
Assuming ideal gas behavior, calculate the mass of (in ) present in the reaction mixture at equilibrium. What is the percent yield of the reaction under these conditions
A solution is prepared by dissolving 16.2 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.50 mL sample of this stock solution is added to 59.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
A box contains a mixture of small copper spheres and small lead spheres. The total volume of both metals is measured by the displacement of water to be 423 cubic centimeters and the total mass is 4.30kg.
Consider the monobromination of 4-ethylheptane using Br2 and UV light. How many unique alkyl halide products could be formed during this reaction
An electron in the n=7 level of hydrogen atom relaxes to a lower energy level, emitting light of 397. What is the value of n for the level to which the electron relaxed
Question- Calculate the E (degree) for each of the following reactions and indicate (Y/N) if it occurs spontaneously or is not spontaneous-
consider the following reactionch4g 2 h2sg ----gt cs2g 4 h2ga reaction mixture initially contains 0.50 m ch4 and 0.75
the preparation of the esters given in this reaction, the reaction product is extracted with 5% sodium bicarbonate solution (NaHCO3) in the isolation step
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