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Determine the balanced chemical equation for this reaction. CaH18(g) + O2(g) > Ca2(g) + H2O(g) Enter the coefficients for each compound in order, separated by commas. For example, 1,2,3,4 would indicate one mole of C8H18, two moles of O2, three moles of CO2, and four moles of H2O
How much 1.0 M NaOH must be added to a 100 ml of 10 mM H3PO4 to raise the pH of the solution to 7.0? B) If 2 volumes of 2.0 M Na2HPO4 are added to 1 volume of 0.1 M H3PO4, what is the pH of the resulting phosphate buffer?
Describe how you will prepare a H2PO4-/HPO42- buffer using solid sodium dihydrogen phosphate and sodium hydrogen phosphate (pH 7.4, 500 mL 0.40M each). How much solid is needed to prepare each solution? How much volume of each of the solutions sho..
During a photochemical smog episode in a coastal city, the steady-state concentration of oxygen radicals at ground level was measured to be 0.09 ppmv at 25 degrees celsius.
Calculate the expected pH from a test solution made only with 2.0 mL of 2.5 M sodium acetate
a basketball is inflated to 9.0 psi (pounds per inch) above atmosphere pressure of 14.7 psi ( a total pressure of 23.7 psi). The diameter of the basketball is 10 inches. What is the pressure of the air in the basketball, expressed in atmospheres?
Calculate the pH of a 2.96 M solution of 2,4,6-trimethylpyridine. The Kb of 2,4,6-trimethylpyridine is 2.7x10-7
Calculate the equilibrium pressure of NO if 2.00 atm and 1.00 atm of O2 are initially placed in a 1.0L container at 440K and the final total pressure in the container
The normal boiling point for acetone is 56.5°C. At an elevation of 5300 ft the atmospheric pressure is 630. torr.
What is the maximum kinetic energy of a photoelectron ejected from cesium by 555 nm light? Note that if the wavelength of the light used to irradiate the cesium surface becomes longer than 660 nm, no photoelectrons are emitted.
can dissolve an aluminum soft-drink can in an aqueous base. 2 Al (s) + 2 KOH (aq) + 6H20 (l)---> 2KAI(OH)4(aq) + 3H(g) If you place 2.05g of aluminum in a beaker with 185 mL of 1.35 M KOH, will any aluminum remain. What mass of KAI(OH)4 is produce..
A compound is known to contain 52.17% carbon and 27.78% oxygen by mass. Each molecule contains two atoms of oxygen. What is the molar mass of this substance
How much energy in kilojoules is required to convert 100 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 g/mL.
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