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A tank of oxygen holds 20.0 L of oxygen (O2) at a pressure of 15.0 atm. When the gas is released, it provides 300. L of oxygen. What is the pressure of this same gas at a volume of 300. L and constant temperature?
In an actual experiment, 100 g each of copper and nitric acid are used and 70g of copper(II) nitrate is obtained. In this experiment, what is a) the limiting reactant
Calculate the reaction Zn(s) + 2HCl(aq) ! ZnCl2(aq) + H2(g) What mass of ZnCl2 (MW = 136.3 g/mol) can be prepared from the reaction of 3.27 grams of zinc (MW = 65.38 g/mol) with 3.00 grams HCl (MW = 36.46)?
Calculate the molarity of a solution of HBr if 34.80 mL of the HBr solution neutralize 0.834 g of Na2CO3. The following is the unbalanced equation for the reaction
An investment company whose stock trades based on supply and demand in the market rather than at net assets value
When a 3.00-g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 2.472 kJ·K-1, the temperature decreases by 0.280 K. Calculate the molar heat of solution of KCl in kJ/mol
What exactly is the reduction of alkynes? I just understand that it is a method for synthesizing alkenes. Why are the leaving groups for E2 reactions not as good as E1 reactions?
What are the frequency and energy of a photon with a wavelength of 900 nm. Report your answers to three significant digits.
Concentrated sulfuric acid has a concentration of 18 M. How much concentrated sulfuric acid would be needed to make 255 mL of 1.0 M sulfuric acid?
you are taking a walk when a bid mean dog growls and begins to chase you. The increased epinephrine will increase? a glycolysis in the liver b glycolysis in the muscle
Which of the metals in the cymbal alloys might be able to be quantitatively measured using UV-vis spectrophotometry. Select one or more
The solubility of CaF2 is 0.00021 mole per liter. What is the solubility product constant for CaF2?
what is the species list when titrating with hydrochloric acid? Aniline (benzenamine) has the formulas C6H5NH2. Its conjugate acid is C6H5NH3+.
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