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Explain what is the wavelength of light that is emitted when an excited electron in the hydrogen atom falls from n = 5 to n = 2? 5.12 x 10-7 m4.34 x 10-7 m6.50 x 10-7 m5.82 x 10-7 m None of these
Consider the titration of 100.0 mL of 0.100 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added and make a graph of pH versus Va: Va = 0, 1,5,9, 9.9, 10. 10.1. and 12 mL.
For each pair of substances, circle the one with higher molar entropy (So). Justify each choice with a brief explanation. Circle the substance with greater molar entropy. Why is its entropy greater
Compute the quantity of work(W) that is associated with a 9.5 Litre expansion of a gas against the given pressure of 755mm Hg
What is the pH of the buffer that result when 12 g of NaH2Po4 and 8.00 g of NaHPO4 are diluted with water to a volume of 0.50 L ? ( Ka of H2PO4- = 6.2*10^-8 , the molar masses of NaH2PO4 and Na2HPO4 are 120.0 g/mol and 142.0 g/mol respectively )
The water warms and the copper cools until the final temperature is 35.2 degrees C. Calculate the specific heat of the metal and identify the metal.
The resulting solution required 13.73 mL of 0.176 mol L 1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass of Mg(OH)2 in the original sample
Once the ionic solid has dissolved, the anion that is formed is able to react as a base, with water as the acid. Write the net acid-base reaction that occurs when dissolved NaClO reacts with water
If a pickle recipe requires 2.0 cups of vinegar to make 6 pints of pickles, how much vinegar do you need to make 25.00 gallons of these pickles
An aqueous solution of 2.76 M ethanol has a density of 0.978 g/mL. What is the mass percent of ethanol
no decomposes to nitrogen and oxygen gases at high tempeature according to the following equilibrium2no lt-gt n2 o2all
Can anybody help me to draw the mechanism for the multistep synthesis of Lidocaine and Lidocaine Bisulfate.
Calculate the pH when 3.06 g of NaClO is added to 57.2 mL of 0.50 M HClO. Ignore any changes in volume.
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