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Afina-wow [57]
3 years ago
11

Good Morning This is a question I need help on pleas help

Chemistry
1 answer:
elena55 [62]3 years ago
8 0

Answer:

S.

Explanation:

North and South must always be opposite of each other.

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Heyo, I believe that the answer would be D. The valence electrons are given up by the K and gained by the F.
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Which of these can be described as a system of stars, gases, dust, and other matter that orbits a common center of gravity?
velikii [3]
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8 0
3 years ago
Read 2 more answers
How many subshells are there in the shell with n = 6?
andre [41]
The number of subshells within a certain shell can be identified using the orbital angular momentum quantum number "l"

"l" is given values from zero till (n-1)
So, for n=6
l is given the following values: 0,1,2,3,4,5
Counting the number of subshells, we will find that the shell with n=6 has 6 subshells
7 0
3 years ago
Calculate the. number of moles of Cu. in 8.0×1021 atoms of Cu​
drek231 [11]

Answer:

8.0 × 10²¹ atoms contain 1.33 × 10⁻² moles.

Explanation:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

Given data:

Number of atoms = 8.0 × 10²¹ atoms

Number of moles = ?

Solution:

One mole of Cu = 6.022 × 10²³ atoms

For 8.0 × 10²¹ atoms:

(1 mol / 6.022 × 10²³ atoms)×8.0 × 10²¹ atoms

1.33 × 10⁻² moles

So, 8.0 × 10²¹ atoms contain 1.33 × 10⁻² moles.

7 0
3 years ago
If an atom has 15 protons 14 neutons and 19 electrons whats the atom electricity charge
QveST [7]

Answer:

-4

Explanation:

15 protons and 19 electrons can be thought of as:

15+(-19), which is -4

7 0
3 years ago
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