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What are the forces on two charges of +0.50 C and +2.0 C, respectively, if they are separated by a distance of 3.0 m? There is a net passage of 4.8 x 1018 electrons by a point in a wire conductor in 0.25 s. What is the current in the wire?
If 0.420 mol of a nonvolatile nonelectrolyte are dissolved in 3.90 mol of water, what is the vapor pressure PH2O of the resulting solution. The vapor pressure of pure water is 23.8 torr at 25.0 degrees C. Express your answer numerically in torr.
A 50% by mole solution of ethanol and water is prepared. Both their partial volumes do not equal their pure partial volumes. The total volume is observable, however, there are two unknowns. Using an approximation how can two partial volumes be mea..
Elimination competes with substitution reactions, especially at high temperature. If that's the case, why did I not see more elimination in my 2 reactions
A compound made of elements from group 2A ("M" below) and group 6A ("X" below) of the periodic table would be expected to have a formula
a solution that contains 55.0 g ascorbic acid vitamin c in 250 g of water freezes at - 2.34 oc. calculate the molar
Which of the following transitions in a hydrogen atom would emit the highest energy photon? a) n=1 to n=2 b) n=3 to n=2 c) n=5 to n=1 d) n=2 to n=8 e) n=6 to n=5
write a brief essay describe the benefits of using fusion reactions for nuclear energy instead of fission. also discuss
write the full electron configuration for te following ca^2+, Ga^2+, S^2
what mass of hcl is contained in 30.0ml of a solution which is 37.2 mass hcl has a density of 1.19gml.determine what is
A particular compound has a heat of vaporization of 28600 J/mol. At 281 K it has a vapor pressure of 121 mmHg. What is its vapor pressure at 306 K
Calculate the wavelength of light necessary to provide photons of this energy? C) Explain why this film can be handled in a darkroom under red light.
A .sodium iodate and calcium nitrate B. sodium nitrate and potassium hydroxide C. sodium iodate and iron (III) chloride D. sodium iodate and potassium hydroxide.
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