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2 years ago

Which of the following compounds contains a double bond? A - NH3 B - CO2 C - N2 D - CI2

Chemistry

1 answer:

notka56 [123]2 years ago

6 0

Answer:- B) $CO_2$

Explanations:- In ammonia, N is the central atom and three H atoms are bonded to it via single bonds.

In carbon dioxide, the central atom is C and two O atoms are bonded to it via double bonds. The reason is, carbon has four valence electrons and oxygen has 6 valence electrons. To complete the octet, each oxygen makes a double bond with carbon. It looks as O=C=O .

Nitrogen has 5 valence electrons and to complete its octet, it needs 3 more electrons so both N atoms are bonded to each other via a triple bond.

Cl has 7 valence electrons and needs one more to complete its octet. So, there is a single bond between two Cl atoms.

Hence the right choice is B) $CO_2$ .

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Answer:

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2 years ago

Read 2 more answers

What is the term for the smallest bit into which a chemical substance can be divided and still have the properties of that subst

ziro4ka [17]

Answer:

Molecule

Explanation:

molecule of the substance. You can break the molecule down further, into the atoms that make it up, but those don't have the properties of the original 'compound'.

Here's an example:

-- Sodium is a soft, slippery metal, that explodes when water touches it.

-- Chlorine is a poisonous green gas.

When an atom of Sodium and an atom of Chlorine combine, they make one molecule of a substance called "Sodium Chloride". That's SALT ! It isn't green, it isn't a gas, it isn't poisonous, it isn't soft and slippery, and it doesn't explode when water touches it.

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2 years ago

5 A farmer stopped maintaining a field that was

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Answer: nutrient

Explanation:

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1 year ago

Human reaction time is usually about 0.18 s. If your lab partner holds a ruler between your finger and thumb and releases it fro

Marizza181 [45]

Answer:

–0.16 m

Explanation:

From the question given above, the following data were obtained:

Time (t) = 0.18 s

Acceleration due to gravity (g) = –9.81 m/s²

Height (h) =?

We can obtain how far the ruler will fall by using the following equation:

H = ½gt²

H = ½ × –9.81 × 0.18²

H = ½ × –9.81 × 0.0324

H = –0.16 m

Thus, the ruler will fall –0.16 m before you will catch it.

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2 years ago