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3 years ago

What is the difference between a Group/Family and a period on the Periodic Table?

Chemistry

2 answers:

drek231 [11]3 years ago

4 0

Explanation:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

Lostsunrise [7]3 years ago

3 0

Answer:

a group is a vertical row and a family is a horizontal row

Explanation:

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Why do you need a correct lewis structure before you can use vsepr to predict a molecules geometry.

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Answer:

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2 years ago

Unrestricted populations of organisms experience _____.

Fudgin [204]

Unrestricted populations of organisms experience Exponential growth.

As a population reaches is carrying capacity there is an increase in competition for All of the above.
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3 years ago

Read 2 more answers

Which of the following compounds is a gas at room temperature? A : CH3CH2OH B : CH3CH2CH2CH2CH2CH2CH3 C : CH3CH2CH3 D : HOCH2CH2

attashe74 [19]

Answer:

C. $CH_3CH_2CH_3$

Explanation:

Molecules with the stronger intermolecular forces are pulled tightly together to form solid at higher temperatures and that's why the freezing point is higher.

Also, molecules with the stronger intermolecular force have greater interaction between the molecules and thus on heating do not boil easily and have high boiling point also.

Thus, melting point and boiling point increases with increase in number of carbon atoms and also increase in intermolecular forces (like hydrogen bonding, if present).

Thus, the compound which is gas at room temperature is $CH_3CH_2CH_3$ <u>because it has least number of carbon atoms and absence of hydrogen bonding.</u>

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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

Explanation:

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3 years ago

How many grams of sucrose would you add to water to make a total of 2.1 L of 9 % solution (mass per volume)? Make your answer's

s344n2d4d5 [400]

Answer : The mass of sucrose added to water will be, 189.0 grams.

Explanation :

As we are given that 9 % solution (mass per volume) that means 9 grams of sucrose present in 100 mL volume of solution.

Total given volume of solution = 2.1 L = 2100 mL (1 L = 1000 mL)

Now we have to determine the mass of sucrose in solution.

As, 100 mL of solution contains 9 grams of sucrose

So, 2100 mL of solution contains $\frac{2100mL}{100mL}\times 9g=189.0$ grams of sucrose

Therefore, the mass of sucrose added to water will be, 189.0 grams.

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3 years ago