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denis-greek [22]
4 years ago
10

An elements shows the number of protons in its nucleus

Chemistry
1 answer:
victus00 [196]4 years ago
6 0
An element's atomic number shows the number of protons in its nucleus.
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True or false: Most of the mass of an atom is found in the electron layers.
Nataly_w [17]
I wanna say false, but I’m sorry if I’m wrong :(
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3 years ago
For each pair, which has higher potential energy?
Allushta [10]

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Maybe A)

Explanation:

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4 years ago
Mercury can be obtained by reacting mercury(II) sulfide with
givi [52]

Answer:

111.68 g

Explanation:

Given data:

Mass of HgS needed = ?

Mass of CaS produced = 26.0 g

Solution:

Chemical equation;

4HgS + 4CaO  →     4Hg + 3CaS + CaSO₄

Number of moles of CaS:

Number of moles = mass/molar mass

Number of moles = 26 g/ 72.143 g/mol

Number of moles = 0.36 mol

Now we will compare the moles of HgS with CaS.

                 CaS             :             HgS

                   3                :               4

                   0.36           :              4/3×0.36 = 0.48 mol

Mass of HgS:

Mass = number of moles × molar mass

Mass = 0.48 mol × 232.66 g/mol

Mass = 111.68 g

6 0
3 years ago
Which forces are intramolecular and which intermolecular?
xxTIMURxx [149]

On a chilly, humid evening, intermolecular forces enable fog to form. The gaseous water molecules condense as a result of powerful molecular interactions.

What force allows fog formation?

From the south, warm, moist air is brought in, and if there is snow or cool precipitation on the ground, it will come into touch with the warm, moist breezes. The air coming in will cool as a result of this air-ground contact. Dew point rises at that position, leading to high humidity and the formation of fog.

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Interactions between molecules or between atoms without bonds are referred to as molecular interactions. There are three types of molecular interactions: cohesive (attraction between like), adhesive (attraction between unlike), and repulsive forces.

Learn more about molecular interactions: brainly.com/question/20910897

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5 0
1 year ago
Why are the offspring produced by sexual reproduction different than their parents?
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Offspring inherit different amounts of DNA from both their parents?

Explanation:

3 0
4 years ago
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