Which molecule is polar?A;CO2 B:PF3 C:CH4 D:BF3

1 answer:

8 0

It is PF3. PF3 is in a pyramidal shape which can be polar depending on the bonds, the others have molecular geometries that will not allow for polarity.

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Explain how elements are arranged on the periodic table. What does the table tell you when you read it like sentences in a book

DochEvi [55]

Explanation:

In periodic table:

Elements are arranged according to their atomic number in increasing order.
When we move left to right we move along a period.The period in the periodic table tell us about the principal quantum number,(n).
When move from top to bottom we are moving in group. The group in the periodic table tell us about the number of the valence electrons present in the valence shell of the elements of the particular group.

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Can someone help? I wasn't at school the day we did this and I don't understand.

Anton [14]

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Just divide the masses by volume to find out the density, multiply the volume with density to find out the mass and divide the mass by density to find out the volume.
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What role did sulfuric play in the ester hydrolysis reaction?

chubhunter [2.5K]

It behaved as a catalyst (the acid hydrolysis )

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3 years ago

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Llana [10]

In 1905 Albert Einstein had proposed a solution to the problem of observations made on the behaviour of light having characteristics of both wave and particle theory. From work of Plank on emission of light from hot bodies, Einstein suggested that light is composed of tiny particles called photons, and each photon has energy.

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I really need help it's urgent help ! Don't ignore it .Your work will be appreciated and don't spam

gtnhenbr [62]

ツ here your answer

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2KBr(aq)+BaI2(aq) → 2KI(aq)+BaBr2(s)

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3 years ago