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LiRa [457]
3 years ago
6

Pomocy zadanie na jutro chemia czesc 1 str 71 zadania 48 i 49

Chemistry
1 answer:
alekssr [168]3 years ago
7 0
English please... Sorry I don't speak this language... :(
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Answer:

Explanation:

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A student has 5 mL of 0.300 M (NH4)2CrO4 solution. What is the concentration of NH4+ in this solution?
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The answer is 0.600 M; but I don't know how to get to that answer.
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3 years ago
What are the number of protons, electrons, and neutrons in one atom of titanium?.
Olin [163]

Answer:

Protons: 22

Neutrons: 26
Electrons: 22

Explanation:

Titanium's atomic number is 22, meaning that the number of protons it has in its nucleus is also 22. # of electrons = # of protons, so the number of electrons is also 22. Titanium has an atomic mass of 47.867, but we can round up to 48. To find the atomic mass, we add up number of protons and neutrons. We know the number of protons as 22, so we subtract 22 from 48 and get a number of 26. Thus, the number of neutrons is 26.

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3 years ago
A Solute is the part of the mixture that is<br> A. dissolved<br> B.used to dissolve a substance
8_murik_8 [283]
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3 years ago
Write equations that show the processes that describe the first, second, and third ionization energies for a gaseous gadolinium
Inessa [10]

Answer:

Gd(g) → Gd^{+}(g) + e^{-} , Gd^{+}(g)→ Gd^{2+}(g) + e^{-}, Gd^{2+}(g) → Gd^{3+}(g) + e^{-}

Explanation:

Ionization energy is the energy required to remove an electron from a gaseous atom or ion.

The first ionization energy is the energy required to remove the valence electron(outermost) from a neutral atom:

Gd(g)→ Gd^{+}(g) + e^{-}

The second ionization energy is the energy required to remove next/second electron from x^{+} ion. The second ionization energy is always higher than the first:

Gd^{+}(g) → Gd^{2+}(g) + e^{-}

The third ionization energy is the energy required to remove third electron from x^{2+} ion:

Gd^{2+}(g) → Gd^{3+}(g) + e^{-}  

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