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Ket [755]
3 years ago
7

Help anyone please ;) Will mark brainliest!! Thank you lol <3

Chemistry
1 answer:
tresset_1 [31]3 years ago
3 0

Answer:

20. F

21.F

22. they have different protons and that is what makes a atom different for any other atom

23.

P=9

N=10

E=9

27. 25

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3 years ago
Choose the options below that are true.
Assoli18 [71]

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The options <u>(A) -</u>The rate law for a given reaction can be determined from a knowledge of the rate-determining step in that reaction's mechanism.  and <u>(C) </u>-The rate laws of bimolecular elementary reactions are second order overall ,<u>is true.</u>

Explanation:

(A) -The rate law can only be calculated from the reaction's slowest or rate-determining phase, according to the first sentence.

(B) -The second statement is not entirely right, since we cannot evaluate an accurate rate law by simply looking at the net equation. It must be decided by experimentation.

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An equation that has an equal number of atoms of each element on both sides of the equation is called a balanced chemical equation.

A. 2Fe_2O_3(s) +3C(s) → 4Fe(s) + 3CO_2(g)

B. 2Al(s) + 3FeO(s) → Fe(s) + 3Al_2O_3(s)

C. 2Al(s) +3H_2SO_4(aq) → Al_2(SO_4)_3(aq) + 3H_2(g)

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