How many protons are in the nucleus of an atom of each element?(a) Ar(b) Sn(c) Xe(d)

Introductory Chemistry 5
Determine the volume of 0.225 M KOH solution required to neutralize each sample of sulfuric acid. The neutralization reaction is: \(\mathrm {H_2SO_4}(aq)+2~\mathrm {KOH}(aq) \longrightarrow \mathrm{K_2SO_4}(aq)+2~\mathrm{H_2O}(l)\) (a) 45 mL of 0.225 M \(\mathrm {H_2SO_4}\) (b) 185 m

Physics: Principles with Applications 7
(III) An atomic nucleus of mass m traveling with speed v collides elastically with a target particle of mass 2m (initially at rest) and is scattered at \(90^{\circ}\). (a) At what angle does the target particle move after the collision? (b) What are the final speeds of the two particles? (c) What fra

Fundamentals of Physics 10
In the return stroke of a typical lightning bolt, a current of 2.5 ' 104 A exists for 20 ms. How much charge is transferred in this event?

Myers' Psychology for AP 2
Briefly describe four therapeutic lifestyle changes advocated by Stephen Ilardi, and describe their benefits.

Organic Chemistry 3
The 1 H NMR spectrum of 1,2-dimethoxyethane (CH3OCH2CH2OCH3) recorded on a 300 MHz NMR spectrometer consists of signals at 1017 Hz and 1065 Hz downfi eld from TMS. (a) Calculate the chemical shift of each absorption. (b) At what frequency would each absorption occur if the spectrum were recorded on a

Principles of Economics 6
Assume the United States is an importer of televisions and there are no trade restrictions. U.S. consumers buy 1 million televisions per year, of which 400,000 are produced domestically and 600,000 are imported. a. Suppose that a technological advance among Japanese television manufacturers causes th

Psychology 5
Hypnosis has been proven to have a. an effect on physical strength. b. a positive effect on memory retrieval. c. an analgesic effect. d. an age-regression effect.

Chemistry: Principles and Reactions 8
Classify each of the following as element, compound, or mixture. (a) air (b) iron (c) soy sauce (d) table salt