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Determine the electron-group arrangement, molecular shape, and molecular bond angle that best describes each of the following.
(a) CH2Cl2
(b) ClO3-
(c) SiO32-
Each of the following molecules has more than one central atom. Determine the shape class, the molecular shape and the molecular bond angle that best describes the environment around each center.
(a) CH3OH
central atom C
central atom O
(b) H2SO3 (no H-S bond)
central atom S
Calculate the amount of heat required to heat a 3.5 kg gold bar from 21 degrees celsius to 67 degrees celcius.
how many grams of glucose c6h12o6 must be dissolved in 563 gram of ethanol c2h5oh to prepare a 2.40 x 10-2 m
Which of the following pairs of substances are miscible and which are not?
Using data from thermodynamic quantities at 298.15K, calculate deltaG^degree for the following reactions. Indicate if each reaction is spontaneous at 298K under standard conditions.
Ascorbic acid is a diprotic acid Ka1=8.0*10^-5 and Ka2= 1.6*10^-12. What is the pH of a .260 M solution of ascorbic acid
Consider the balanced chemical reaction shown: 4PH^3 (g) + 8O^2 (g) ---> 6H^2O (l) + 1P^4O^10 (s) In a certain experiment, 8.92g of PH^3 reacts with 9.60g of O^2(g)
which of the following statements about colligative properties of solutions is false?1. the higher the concentration of
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Suppose that the microwave radiation has a wavelength of 11.6cm . How many photons are required to heat 225 mL of coffee from 25.0 C to 62.0C ? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 , as water o..
a sample of gas occupies a volume of 445 ml at a temperature of 274 k. at what temperature will this sample of gas
A box contains 126000 red marbles and 885000 yellow marbles. What sample size is required to reduce the sampling standard deviation of red marbles to 1.85%
What are the major products of reaction of each of the following with (i) propanal and (ii) propanone. (a) LiAlH4 / THF then acidic workup (b) PhMgBr then acidic workup
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