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3 years ago

Simple question. How many groups and how many periods are on the periodic table? Which directions do they go?

Chemistry

2 answers:

stepan [7]3 years ago

5 0

There is 18 groups in the periodic table.. periodic tables go from left to right. hope that helped

zhuklara [117]3 years ago

5 0

Hey there,
There are 18 groups also known as vertical columns in a periodic table. Groups are vertical and Columns are horizontal

Hope this helps ^_^

~Top

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Write chemical equation for the following reactions. Indicate physical states and write net ionic equations. If no reaction indi

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There is no reaction.

Molecular equation :

K₂CO₃(aq) + 2NH₄Cl(aq) ⟶ 2KCl(aq) + (NH₄)₂CO₃(aq)

Ionic equation :

2K⁺(aq) + CO₃²⁻(aq) + 2NH₄⁺(aq) +2Cl⁻(aq) ⟶ 2K⁺(aq) + 2Cl⁻(aq) + 2NH₄⁺(aq) + CO₃²⁻(aq)

Net ionic equation :

Cancel all ions that appear on both sides of the reaction arrow (underlined).

2K⁺(aq) + CO₃²⁻(aq) + 2NH₄⁺(aq) +2Cl⁻(aq) ⟶ 2K⁺(aq) + 2Cl⁻(aq) + 2NH₄⁺(aq) + CO₃²⁻(aq)

All ions cancel. There is no net ionic equation.

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3 years ago

A baker has two identical cakes except that one cake is hot, and the other cake is room temperature. He places both cakes on an

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Answer:

the plate gets warmer and the cake gets colder

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Are protons positive and neutrons neutral

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Answer: Yes, they're neutral.

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Which carboxylic acid can be combined with an alcohol to form the ester shown below?

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Answer:

CH₃CH₂CH₂COOH.

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To know which option is correct, let us hydrolysed the given ester. This is illustrated in the attached photo.

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From the reaction given in the attached photo, we can see that the carboxylic acid needed to produce the desired ester is butanoic acid, CH₃CH₂CH₂COOH.

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