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In a hydrogen atom, the 2s and the 2p orbitals have the same energy. In a nitrogen atom, the energies of 2s and the 2p orbitals are different. Explane why.
Calculate the [H3O+] of a solution that has an [OH] of 0.000 0060M. Is the solution acidic, basic or neutral. Calculate the pH and pOH of a solution that has an H2O+ concentration of 1.3 x 10 -6M.
In the titration, 34.67 mL of the sodium hydroxide solution was required to react with 0.1082 g KHP. Calculate the molarity of the sodium hydroxide.
What is the energy change when the temperature of 12.3 grams of solid tin is decreased from 38.1 C to 24.7 C
A box contains a mixture of small copper spheres and small lead spheres. The total volume of both metals is measured by the displacement of water to be 423 cubic centimeters and the total mass is 4.30kg.
if 8.40 grams of C are burned, how much heat will be released for the following balanced reaction: C + O2 -> CO2 + heat (393 KJ)
3.00 mole of Ne has a total pressure of 24.5 atm at 25 degrees C. How many moles of He are in the flask?
Originally, 1.0 mL Hydrochloric acid is added to 1.0g of an unknown amine and 28 mL water in the first step of the Synthesis of Acetamides. If we added 3X the amount of hydrochloric acid instead, why would there be no product?
At what temperature do all three temprature scales have the same numerical values. pls show step by step or proof.
The Ksp of AgCl at 25 oC is 1.6 x 10-10. Consider a solution that is 1.0 x 10-4 M NaCl and 1.0 x 10-6 M AgNO3. 1. The solution is saturated.
Calculate the number of moles of b required to produce 5.25 grams of e according to the balanced equation: a + 2b = c + d + e (molar mass of e is 35grams/mole)
Draw the structure of the following three isomeric amides with chemical formula C6H11NO. Draw all three structures in the same window, DO NOT separate them with an arrow
If the pressure increases to 800. torr, how many moles of gas were added to the container? Assume a constant-volume container.
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