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Anvisha [2.4K]
4 years ago
14

Complete the passage.

Chemistry
2 answers:
mr Goodwill [35]4 years ago
8 0

Answer:

Complete the passage.

K (potassium) belongs to group IA of the periodic table, and has 1 valence electron. Br (bromine) belongs to VIIA, and has  _____ valence electrons.

The answer is <u>7</u>!!!!!

Crank4 years ago
4 0
Bromine has 7 valence electrons
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A single alkyl bromide reactant theoretically yields either of the given products, depending on the reaction conditions. Draw th
Ierofanga [76]

Answer:

H_{3}C--H_{3}C--CH_{3}--Br--CH_{3}

Explanation:

The steps involved in predicting the structure of the alkyl bromide compound are outlined below.

1) An examination of the product shows that the product could only be formed by a substitution reaction.

2) The structure of the alkyl bromide compound can be then predicted by replacing the methoxide group in the product after the substitution of bromine atom. This is because the methoxide ion acts as a strong nucleophile.

Therefore, by consideration the reaction mechanisms of reactions 1 and 2, it can be predicted that the structure of the alkyl bromide compound is H_{3}C--H_{3}C--CH_{3}--Br--CH_{3}. A pictorial diagram of the alkyl bromide compound is also attached.

8 0
3 years ago
Read 2 more answers
What concentration of OH is required to created a pOH of 1.3.
Crank

Answer:

0.0501

Explanation:

OH=10^-poH

OH=10^-1.3

=0.0501

6 0
3 years ago
What types of predictions can be made using the Periodic Table?
Andrej [43]
Periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size and its electronic properties. Major periodic trends include: electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character. Periodic trends, arising from the arrangement of the periodic table, provide chemists with an invaluable tool to quickly predict an element's properties. These trends exist because of the similar atomic structure of the elements within their respective group families or periods, and because of the periodic nature of the elements.
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A chemist reacted 57.50 grams of sodium metal with an excess amount of chlorine gas. The chemical reaction that occurred is show
pantera1 [17]
(On my left) (On my right side)
Na: 1. Na:1
Cl:2. Cl:1

Na:1 x 2 =2
Na:1 x 2=2
Cl: 1 x 2 = 2

Answer:
2Na + Cl2 -> 2NaCl
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I have biology this semester too :)
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