2 years ago

1. The fourth principle electronic level has:

1 answer:

5 0

Answer:

the fourth level can hold up to 32 electrons: 2 in the s orbital, 6 in the three p orbitals, 10 in the five d orbitals, and 14 in the seven f orbitals.

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The atomic number of nitrogen is 7. The mass is 14.01. This means that a) All nitrogen atoms have exactly 7 neutrons b) A small

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This means that there are 7 protons in the nucleus of a nitrogen atom.

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2 years ago

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I need an answer ASAP<br><br> What important role do sand dunes play?

Nezavi [6.7K]

Answer:

Keeps tides on the shore and away from the city

Explanation

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2 years ago

What is the answer of these compound

olganol [36]

BaO, Barium Oxide.

Na2SO4, Sodium Sulfate.

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2 years ago

What subatomic particles make up the nucleus of an atom (select ALL that are in the nucleus)

Ilia_Sergeevich [38]

3 and 4 i would think

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2 years ago

The half-life of a pesticide determines its persistence in the environment. A common pesticide degrades in a first-order process

denis23 [38]

Answer:

0.1066 hours

Explanation:

A common pesticide degrades in a first-order process with a rate constant (k) of 6.5 1/hours. We can calculate its half-life (t1/2), that is, the times that it takes for its concentration to be halved, using the following expression.

t1/2 = ln2/k

t1/2 = ln2/6.5 h⁻¹

t1/2 = 0.1066 h

The half-life of the pesticide is 0.1066 hours.

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3 years ago