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3 years ago

HELP PlEASE

Chemistry

2 answers:

Sergeeva-Olga [200]3 years ago

6 0

Answer:

1 Polymer

2 Aluminum

3 Hydrocarbons

4 monomers

5 their functional group

6 polyethylene

Explanation:

i took the test

hoa [83]3 years ago

3 0

Answer:Question# 1) Polymer

Question # 2) Aluminum

Question #3) Hydrocarbons

Question # 4) monomers

Question # 5) their functional group

Question # 6) polyethylene

Explanation:

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Based on their valencies, the subscripts of the ionic compounds formed will be:

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<h3>What subscripts would you most likely use if the following substances formed an ionic compound?</h3>

A. An alkali metal and a halogen.

An alkali metal and a halogen both have valencies of one.

Therefore the subscripts would be 1.

B. An alkali metal and a non-metal from group 16.

An alkali metal has a valency of 1 and a group 16 non-metal has a valency of 2.

By exchange of valencies, the subscript would be 2 and 1.

C. An alkaline earth metal and a halogen.

An alkaline earth metal has a valency of 2 and a halogen has a valency of 1.

By exchange of valencies, the subscripts would be 1 and 2.

D. An alkaline earth metal and a non-metal from group 16.

An alkaline earth metal has a valency of 2 and a non-metal from group 16 has a valency of 2.

By exchange of valencies, the subscripts would be 2 and 2.

Therefore, the subscripts of the ionic compounds formed will be:

1 and 1
2 and 1
1 and 2
2 and 2

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Why isn't the Liter a basic SI unit of measurement? (In your answer use at least one SI base unit of measurement and one other d

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Answer:

B. pOH = 14 - pH and D. pH = 14 - pOH.

Explanation:

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In this case, we must remember that pH and pOH are referred to a measure of acidity and basicity respectively, since pH accounts for the concentration of H⁺ and pOH for the concentration of OH⁻ in a solution. In such a way, since the maximum scale is 14, we say that the addition between the pH and pOH must be 14:

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Therefore, the correct answers are B. pOH = 14 - pH and D. pH = 14 - pOH since the both of them are derived from the previous definition.

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