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PROBLEM: You are given two (2) packages of salted peanuts. The original version, which has a high salt content and a newer reduced salt content version. Determine whether the newer version does in fact have a reduced salt content compared to the original version. Plan and design an experiment using gravimetric analysis.
At 710.mm hg a sample of nitrogen gas occiuped 625 ml.what volume does gas occupy if the temperature remains constant and the pressure increases to760.mm hg?
the reaction 2ararrbc has a kc of 0.2. the reaction is commenced with initial con- centrations a 0.2 m b 0.2 m and c
In the following reaction, how many grams of NaBr will produce 244 grams of NaNO3? Pb(NO3)2(aq) + 2 NaBr(aq) PbBr2(s) + 2 NaNO3(aq)
Calculate the mass of oxygen (in mg) dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air to be 0.21
How to carry out a calorimetry experiment to determine the delta H for the exothermic reaction of Ca(OH)2 (s) and HCl (aq). Predict how each of the following will affect the calculated value of Delta H.
A 4.70 g nugget of pure gold absorbed 260 J of heat. The initial temperature was 28.0°C. What was the final temperature.
What peptide remains after two sequential Edman degradations of the pentapeptide Ser-Pro-Gly-Phe-Arg
How much heat must be supplied at 1000 degrees C if 1000 J of useful work is to be done by the engine?
a gas sample was collected over water at 25.3oc. the total pressure is determined to be 0.97 atm. what is the partial
Write the balanced equation and determine the standard cell potential for each of the following cell notatio
chlorine has an average atomic mass of 35.453 amu. the main isotopes of chlorine are 35cl which has an atomic mass of
how many grams of sodium lactate must be added to a 1.00l solution of .400m lactic acid to make a buffer with a ph of
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