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At the beginning of a titration to standardize the NaOHsolution, Student A adjusted very carefully the initial burettevolume to 0.00 ml. But he did not notice an important air bubble atthe tip of the burette. At the end of the titration the air bubbleis gone. How would that effect the calculated molarity?
Electrochemical cell potentials can be used to determine equilibrium constants that would be otherwise difficult to determine because concetnrations are small
A 1L steel tank has a safety valve that opens when the internal pressure exceeds 850 torr. The tank is filled with He at 23 oC and 0.991 atm.
A small cube of aluminum measures 15.6 mm on a side and weighs 10250 mg. what is the volume of this cube in cubic cm? how would I find this out.
Compute the number of moles - As we know many volatile substances are present in Earth's atmosphere in trace amounts.
Which sequence of reactions would you use to synthesize 2-cyanohexane (racemic mixture) using 1-hexene as your starting material? Question 6 options: Reaction with (1) H2SO4 (cat.)
A second order reaction is found to have an activation energy of 20 kj/mol at 298K. At what temperature would this reaction need to occur at to proceed twice as fast
A portion of soup containing 235 g water is heated in a microwave oven from 23°C to 85°C, with radiation of wavelength 1.55 multiplied by 10-2 m. How many photons are absorbed by the water in the soup
what is the conclusion for determination of percent composition in hydrated compound
What mass of AgBr would precipitate from this mixture? (Ksp of AgBr is 5.4x10^-13 & Kf of Ag(CN)2^1- is 1.0x10^21)
Calculate the energy in kJ/mol of the electron when it is in the n= 1 level. If the energy change is negative, include the minus sign
An unknown amount of Lithium hydroxide is dissolved in 50.0 mL of water. If it take 14.7 mL of a 0.150 M solution of oxalic acid (H2C2O4) to neutralize the lithium hydroxide solution, what is the mass of lithium hydroxide (in grams) that was disso..
How many times g of acceleration are present in an ultracentrifuge with a rotation frequency of 45000 rpm and a distance of 6 cm from the center of rotation. Note: the quantity omega is the angular frequency
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