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An excited hydrogen atom with an electron in the n=5 state emits light having frequency of (6.9 x 10^14)(s^-1). what is the principle quantum level for the final state in this electronic transition?
How many milliliters of 0.459 M HBrO4 are needed to titrate each of the following solutions to the equivalence point. (a) 21.2 mL of 0.505 M KOH mL (b) 30.7 mL of 0.551 M NaOH mL
Write the molecular formula for the compound that exhibits a molecular ion at M+ = 96.0580. Assume that C, H, N, and O might be present, and use the exact masses from your text.
If this arsenic is present as arsenate, AsO4^3-, what mass of sodium arsenate would be present in a 1.10L sample of drinking water that just meets the standard. Parts per billion is defined on a mass basis as ppb = g solute/g solution 10^9
Naturally occuring sulfur consists of four isotopes: 95.0% 32s (31.97207amu); 33s (32.97146amu, 0.76%);
nitrogen and hydrogen gases react to form ammonia gas as followsn2g3h2g--gt2nh3gat a certain temperature and pressure
in a well-fed adult camel this can weigh as much as thirty five kilograms. the metabolism of this fat enables the camel
Draw the structure of an eight-carbon alkene that would yield the following compound after treatment with ozone followed by dimethyl sulfide
Assume that you have 1.36 mol of H2 and 3.48 mol of N2. How many grams of ammonia. (NH3) can you make, and how many grams of which reactant will be left over
A mixture at equilibrium at 827 C contains .552 mol CO2, .552 mol H2, .448 mol CO, and .448 mol H20. The balanced equation is shown below: CO2(g) + H2(g) CO(g) + H2O(g) What is the value of Keq?
Sn2 reactions occur at different rates depending on the structure of the substrate in the reaction . Would an Sn2 reaction occur at a faster rate on a primary or a tertiary substrate ? Briefly. Explain your answer
Estimate the approximate concentration of a typical enzyme and the number of the enzyme molecules inside each cell? Make any reasonable assumption that will help you calculate the numbers
The following pressure and volume data were obtained for 1.00 gram of unknown gas at 90.0C. Calculate the molar mass of the unknown gas in g/mol.
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