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Reffering to the structure of estrone, a female sex hormone. What is the number of carbon atoms in estrone that are sp2 hybridized?
Using concentrated acetic acid and solid sodium acetate, how would you prepare 10 l of 0.1 M acetate buffer at pH 4.75? The pKa for acetic acid is 4.75. What Volume of concentrated acetic acid is needed (mL)?
in a certain experiment 28.0 ml of 0.250 m hno3 and 53.0 ml of 0.320 m koh are mixed. calculate the amount of water
How long will it take for a signal to travel that distance assuming that the speed of light in the cable is the same as in a vacuum?
A solution containing .8330 g of an unknown protein in 170.0 ml of solution has an osmotic pressure of 5.20 mmHg at 25 C. What is the molar mass of the protein
For the hypothetical first order reaction A yields products, k= 0.0206 s-1. if the initial concentration of A is 0.165 M, how long would it take for A to be 88.7% consumed
In lab a student titrates 50.00mL of an unknown monoprotic weak acid with 35.5mL of .9500M NaOH to reach the equivalence point of the titration. What volume of NaOH was delivered to reach the midpoint in this titration
How many grams of krypton gas will occupy 2.55 liters at 1.25 atm if it occupies 3.75 liters at 0.750 atm at 255 K?
Lactic acid (abbreviated HL) is made into a 0.100 M solution whose pH = 2.44. What is the ka for HL
Draw Lewis structures to determine which of the following compounds exhibit resonance. Enter the letters corresponding to all those compounds which exhibit resonance
for the reaction 2nog2h2g--gt2h2og at equilibrium in a 4.0l container at 25oc. suppose 2.5 mol of each component
If a photon has a wavelength of 412.2 nm, what is its energy in J, frequency in s^-1, wavenumber in cm-1, and linear momentum in kg m/s
Some students wanted to react a piece of aluminum with sulfuric acid. the students wanted to make sure that they had reliable results and decided to measure their lab temperature and pressure
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