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Question- A 10 mL volume of 75 mM ethanol is necessary for an experiment. What volumes of 1 M ethanol stock and water should be combined to produce exactly the required volume at the working concentration?
Express your answer to two significant figures and include the appropriate units.
The following compound has two stereoisomers. One has a dipole of 0 D, and the other has a dipole moment of 2.95 D. Draw the structure of the stereoisomer with dipole moment of 2.95 D.
State the chemical formula of salt and classify the bond as ionic, polar covalent, or non-polar covalent.
The activation energy of a certain reaction is 46.7 kJ/mol. At 20 C, the rate constant is s^-1. At what temperature would this reaction go twice as fast
a 10ml sample of pure orange juice was diluted with 40ml of metaphosphoric acid solution. then 10ml of diluted juice
What is the pH and the [OH-] of the solutions with the following [H3O+]? a) 2.3 x10-4 , b) 4.8 x10-8, c) 6.3 x10-2
a beaker with 115 of an acetic acid buffer with a ph of 5.00 is sitting on a benchtop. the total molarity of acid and
the equilibruium constant Kc for the reaction A(g)+ B(g)----> C9(g) is 0.76 at 150C. If 0.800 mol of A is aded to 0.600 mol of B in a 1.00-L container at 150degrees C
Calculate the pH at the equivalence point for the titration of 0.10 M NH3 by 0.10 M perchloric acid. pKb for NH3=4.74; hint: consider the change in volume before and after reaction. Complete calculation is required.
How much energy in joules is required to heat 295 mL of coffee from 25.0 0C to 62.0 0C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 rm J/(gc. K) .
Why does absorbance vs concentration calibration curve need not pass through origin (0,0) looking at beer lambert law?
Question- Identify the correct values for a 2p sublevel. Identify the correct values for a 2p sublevel. n = 2, l = 1, ml = 0 n = 2, l = 1, ml = +2 n = 1, l = 0, ml = 0 n = 4, l = -1, ml = 0 n = 3, l = 1, ml = 0
Predict the sign of delta S_system for the following processes a) molten Fe solidifies b) LiCl_(s) is formed formed from Li_(s) and Cl2_(g)
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