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DerKrebs [107]
3 years ago
12

Which equation is an expression of the rate law?

Chemistry
1 answer:
notsponge [240]3 years ago
7 0

Answer:

The answer to the question is C

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Pls helllllpppppp!!!!!<br> how was the interior of the atom was experimentally dicovered?
emmainna [20.7K]

Answer:

Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup."

6 0
3 years ago
The energy of any one-electron species in its nth state (n = principal quantum number) is given by E = –BZ2 /n2 where Z is the c
Ivahew [28]

Explanation:

(a) The given data is as follows.

            B = 2.180 \times 10^{-18} J

            Z = 4 for Be

Now, for the first excited state n_{f} = 2; and n_{i} = \infinity if it is ionized.

Therefore, ionization energy will be calculated as follows.

         I.E = \frac{-Bz^{2}}{\infinity^{2}} - (\frac{-2.180 \times 10^{-18} J /times (4)^{2}}{(2)^{2}})

              = 8.72 \times 10^{-18} J

Converting this energy into kJ/mol as follows.

           8.72 \times 10^{-18} J \times 6.02 \times 10^{23} mol  

           = 5249 kJ/mol

Therefore, the ionization energy of the Be^{3+} ion in its first excited state in kilojoules per mole is 5249 kJ/mol.

(b) Change in ionization energy is as follows.

         \Delta E = -Bz^{2}(\frac{1}{(4)^{2}} - {1}{(2)^{2}}) = \frac{hc}{\lambda}

   \frac{hc}{\lambda} = 0.1875 \times 2.180 \times 10^{-18} J \times (4)^{2}                

        \lambda = \frac{6.626 \times 10^{-34} \times 2.998 \times 10^{8} m/s}{0.1875 \times 2.180 \times 10^{-18} J \times 16}

                     = 303.7 \times 10^{-10} m

or,                 = 303.7^{o}A

Therefore, wavelength of light given off from the Be^{3+} ion by electrons dropping from the fourth (n = 4) to the second (n = 2) energy levels 303.7^{o}A.

5 0
3 years ago
Write the balanced chemical equation for the reaction of khp with naoh
liubo4ka [24]

Answer:

KHP + NaOH ⟶ KNaP + H₂O

Explanation:

The H in KHP is the acidic hydrogen. The OH⁻ in NaOH neutralizes it  and converts it to H₂O.

The balanced equation for the reaction is

KHP + NaOH ⟶ KNaP + H₂O

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When a balloon is rubbed with human hair, the balloon acquires an excess static charge. This implies that some materials
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C) can give up electrons more readily than others.
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Natalie observes these characteristics in the model of an atom. (i) includes positive charge (ii) contains electrons (iii) expla
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Electron cloud model

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