Chemistry, 10.07.2019 02:30 sophandnoel15

Rank the following silver compounds from most soluble to least soluble. agcl, agbr, agi, agno2, agscn, ag2o.

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Answer from: louie4052

The order of solubilities is AgNO₂ > AgCl > Ag₂O > AgSCN > AgBr > AgI

Unless you look up the solubilities, I think you must use the Kₛₚ values to calculate solubilities.

For the AgX compounds

AgX ⇌ Ag⁺ +X⁻

Kₛₚ = s × s =s²

s = √Kₛₚ

For Ag₂O, the equation is

Ag₂O + H₂O ⇌ 2Ag⁺ + 2OH⁻

Kₛₚ = 2s × 2s = 4s²

s = ½√Kₛₚ

I found the following values and calculated the solubilities.

Compound Kₛₚ s(mol·L⁻¹)

AgCl 1.77×10⁻¹⁰ 1.33×10⁻⁵

AgBr 5.35×10⁻¹³ 7.31×10⁻⁷

AgI 8.52×10⁻¹⁷ 9.23×10⁻⁹

AgNO₂ 6.0×10⁻⁴ 2.5×10⁻²

AgSCN 1.03×10⁻¹² 1.01×10⁻⁶

Ag₂O 1.52×10⁻⁸ 6.16×10⁻⁵

AgNO₂ > AgCl > Ag₂O > AgSCN > AgBr > AgI

Answer from: Quest

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

$^{222}_{86} rn+ ^{4}_{2} he$ →

Answer from: Quest

remember that hf is only the energy of one photon. not two. not three. one. 1) 5.12 * 10^3 photons find the energy of one photon, then determine how many photons are needed to reach the sensitivity. e = hf = (6.626 * 10^-34 js)(5.95 * 10^19 hz) = 3.94247 * 10^-14 j per photon (2.02 * 10^-10 j) / (3.94247 * 10^-14 j/photon) = 5123.69149 photons round to three sig figs. 2) 5.77 * 10^-17 j energy of pulse = energy per photon * number of photons = hfn = (6.626 * 10^-34 js)(1.66 * 10^13 hz)(5250) = 5.774559 * 10^-17 j round to three sig figs. 3) 4.07 * 10^8 kj/mol 10^12 pm = 1 m c = fλ f = c/λ e = hf = hc/λ = [(6.626 * 10^-34 js)(3.00 * 10^8 m/s) / (2.94 * 10^-12 m)](1 kj/1000 j)(6.02 * 10^23 photons/mol) = 40702571.4 kj/mol round to three sig figs. 4) 9.94 * 10^-1 m e = hc/λ λ = hc / e = (6.626 * 10^-34 js)(3.00 * 10^8 m/s) / (2.00 * 10^-25 j) = 0.9939 m round to three sig figs. 5) 9.06 * 10^3 photons energy of pulse = energy per photon * number of photons number of photons = energy of pulse / energy per photon = energy of pulse / (hf) = (3.87 * 10^-13 j) / [(6.626 * 10^-34 js)(6.45 * 10^16 hz)] = 9055.23695 photons round to three sig figs. 6) 2.78 * 10^-15 j this is problem 1, except in reverse. sensitivity = minumum number of photons * energy per photon = (5930)(6.626 * 10^-34 js)(7.077 * 10^14 hz) = 2.78070758 × 10^-15 j round to three sig figs.

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Rank the following silver compounds from most soluble to least soluble. agcl, agbr, agi, agno2, agsc...

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