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Genrish500 [490]
4 years ago
11

How many moles are in 2.3 grams of phosphorus? :(

Chemistry
1 answer:
tatiyna4 years ago
4 0

Answer:

there are 0.074 moles in 2.3 grams of phosphorus

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The spectrum of a hydrogen atom contains a total of 26 lines, and that of lithium possess approximately eight times as many. Thi
Margarita [4]

Answer:

greater number of occupied sublevels in the lithium atom

Explanation:

Although Hydrogen has only one electron, the atom has several different energy levels. When the electron transitions from a higher energy level to a lower one,  photons are released. The photons absorb light at different wavelengths and colors.then they appear as lines on the spectrum of the hydrogen atom. Lithium has a greater number of occupied sub-levels which means more electrons will transition through the energy levels leading to more lines appearing on its spectrum .

8 0
3 years ago
What is einsteins theory of relativity?
White raven [17]

Answer:

The laws of the universe are for all observers, and it was shown that the velocity of light in spacetime will be the same regardless of the subject's speed.

Explanation:

The principle outlines how things behave in time and space, so it could be used to model anything from black hole life to light shifting due to the gravitational, as well as the action of the terrestrial Planets in its orbit. Einstein's most popular hypothesis has far-reaching ramifications.

6 0
3 years ago
Which type of reaction occurs when 50mL quantities of 1 M Ba(OH)2 (aq) and H2SO4 (aq) are combined
iragen [17]
Double replacement.

Ba(OH)2 + H2SO4 ====> 2H2O + BaSO4
5 0
4 years ago
Which metal is not reactive with anything
Luden [163]

Answer:Silver, gold, and platinum are metals with the least reactivity.

Explanation:They are found in nature.

3 0
3 years ago
Consider the solution containing 0.181 M lead ions and 0.174
Luba_88 [7]

Answer:

[ S2- ] = 4.0 E-47 M

Explanation:

  • PbS(s) → Pb2+  +  S2-
  • HgS(s) → Hg2+  +  S2-

∴ Ksp PbS = 3.4 E-28 = [Pb2+]*[S2-]

∴ [Pb2+] = 0.181 M

∴ Ksp HgS = 4.0 E-53 = [Hg2+]*[S2-]

∴ [Hg2+] = 0.174 M

∴ Ksp PbS > Ksp HgS ⇒ precipitate first Hg2+:

∴ [ Hg2+ ] = 1.0 E-6 M

⇒ [S2-] = 4.0 E-53 / 1.0 E-6 = 4.0 E-47 M

8 0
3 years ago
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