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On a cool, rainy day, the barometric pressure is 730mmHg. Calculate the barometric pressure in centimeters of water (cmH2O). Density of Hg = 13.5g/ml; density of water = 1.00g/ml.
In what ways might the one(s) that does (do) not have a metabolic energy source (caffeine) provide the perception of increased energy after consumption?
Calculate the molarity of Pb2+ when 20.00 mL of 0.400 M Pb(NO3)2 is diluted with water to a volume of 200.00 mL.
How many grams of nickel nitrate, Ni(NO3)2, must be dissolved to prepare 200 mL of a 0.152 M aqueous solution of the salt.
If an acid base reaction produces a solution with a pH of 7 at its equivalence point, why does an indicator solution that changes color at either a pH of 5 of 9 work just as well as one that changes at a pH of 7
a graduated cylinder contains 142 of water. a 15.0 piece of iron density 7.86 and a 19.0 piece of lead are added.
How many joules of heat are given off when 5 g of water cool from 75 degrees C to 25 degrees C?
A solution contains 0.10 M I- and 0.10 M CO32-. In an attempt to separate the ions, Pb(NO3)2 is slowly added to the solution. (a) Identify the precipitates that could form and predict which precipitate will form first.
If energy obtained from burning 1.23 pounds of butane (feul value is 10.85 kcal/g) is used to heat 126.5 kg of water at an initial temperature of 20.7 degrees C, what is the final temperature
a sample consisting of 2.0 mol co2 occupies a fixed volume of 15.0l at 300k. when it is supplied with 2.35 kj of energy
How much heat can be obtained by burning 14 pounds of propane? (Remember to look at this from the viewpoint of the surroundings, since the question asks how much heat can be OBTAINED.)
A mixture of ammonia and oxygen is prepared by combining 0.260 L of NH3 (measured at 0.700 atm and 21°C) with 0.170 L of O2 (measured at 0.740 atm and 49°C). How many milliliters of N2 (measured at 0.740 atm and 100. °C) could be formed if the fol..
A particular brand of gasoline has a density of 0.737 at 25C . How many grams of this gasoline would fill a 13.3 tank?
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