The HNH bond angle in ammonia is ______. 100° 107° 109.5° 129°

1 answer:

5 0

The best answer is 107 degrees. The nitrogen atom in ammonia is surrounded by three bonding pairs and one lone pair of electrons giving a shape of a tetrahedron. The bond angle is 107 degrees which is less than the tetrahedral bond angle.

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Give the name of the following molecule. A compound with a total of six carbons with a double bond and the rest single bonds. Th

AlekseyPX

Answer:
The name of given molecule is 3-Methylpent-2-ene.

Explanation:
First of all a carbon chain of five carbons was drawn. Then a double bond was made between carbon 3 and 4 (starting from left). A methyl group was drawn at middle carbon which is at position 3.

Molecule sketched was named as,

1) A longest chain containing double bond was selected and numbering was started from the end closest to double bond. Hence,

2-Pentene or Pent-2-ene

2) The position of substituent was specified before the parent name, Hence,

3-Methyl-2-Pentene or 3-Methylpent-2-ene

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3 years ago

Someone please answer i’ll give brainliest

Viktor [21]

Answer:

A) wrong. The molar is same so A is hevier

Explanation:

Xg/mol × (same molar)= g

→ bigger molar bigger mass

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2 years ago

Which are characteristics of medusae?

slavikrds [6]

Answer:

Are sessile, have tentacles, mouths open downwards

Explanation:

Medusae may have many tentacles with which they catch their prey. Sometimes, people bathing in the ocean are touched by a medusa. Their tentacles are long and thin and covered in venomous stinging cells (known as nematocysts). They inject poison which immobilizes small fish. People who are stung should seek medical attention. There have been some deaths after severe medusa stings.

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3 years ago

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Define redox reations

lesantik [10]

Redox is a chemical reaction in which the oxidation states of atoms are changed. Any such reaction involves both a reduction process and a complementary oxidation process, two key concepts involved with electron transfer processes.

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3 years ago

Which of the following groups of elements have no electronegativity?

natulia [17]

Answer: Noble gases

Explanation:

Electronegativity is the ability of an atom to gain an electron. Noble gases already have 8 electrons, so they don’t need to gain electrons. If they don’t gain electrons, it has no electronegativity.

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3 years ago