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A cook wants to heat 1.37 of water from 27.0 to 100.0 .If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn? Natural gas produces 49.3 of heat per gram. (For the sake of simplicity, assume that the transfer of heat is 100 efficient.)
Determine an apparent radius of the tungsten (VI) ion assuming the oxide ion radius is 1.40A. Suggest a reason that the calculation might give a result that has no physical significance.
the difference between E and Z formations for organic molecules and how to establish priority according to the Cahn-Ingold-Prelog rules.
oxygen gas is collected over water at 21 degrees C and an atmosperic pressure of 748 mm Hg. What is the partial pressure of oxygen gas in the mixture
Set up the problem by listing the reactions unknowns equations and knowns b.) Calculate the concentrations of all chemical species present in the solution, and the pH.
An airplane is pressurized to 650 mmHg, which is the atmospheric pressure at a ski resort at 13000 ft altitude: a) if air is 21% oxygen, what is the partial pressure of oxygen on the plan
Calculate the number of moles of Ascobic acid in the 50.00 ml Sample. Titration Volumes of KIO3 Initial Buret reading/ml trial 1=12.54 trial 2=8.78 Final buret reading/ trial 1=38.74 trial 2=34.93 Volume of KIO used/ml trial 1=? trial 2=?
Calculate the change in molar Gibbs energy, ?Gm, of liquid mercury initially at 1.00 bar pressure if a pressure of 1000. bar is applied to it. The process occurs at the constant temperature of 25 ºC
What is the pH of a solution made by dissolving 0.052 grams of RbOH in enough water to make 64.9 mL of solution
Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette smoke. Pyridine ionizes in water as follows: C5H5N + H2O C5H5NH+ + OH- The pKb of pyridine is 8.75. What is the pH of a 0..
Calculate the heat that must be supplied to 12.40 g of Ne(g) at 0.150 atm to raise its temperature from 25.0°C to 51.0°C under the following conditions
Three liquids of different densities are mixed. Because they are not miscible (do not form a homogeneous solution with one other), they form discrete layers, one on top of the other.
Rate of reaction for 8H2S +4O2 -> 8H2O + S8, if started with 21.35g of H2S and 15.36g of O2. What is the limiting reactant and how much S8 can be produced?
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