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Vlada [557]
3 years ago
8

Which particle has a negative charge?

Chemistry
2 answers:
GaryK [48]3 years ago
8 0
The answer is a i’m pretty sure
sweet [91]3 years ago
6 0

Answer: A

Explanation: Beta particles have a charge of -1

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What atom or ion make up 2 protons and 10 electrons?
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Which compound 2-bromo-2-methylpropane or 2-chloro-2-methylpropane?
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3 years ago
How many atoms are in 20 grams of aluminum ​
jeyben [28]

Answer:

4.5 × 10²³ number of atoms Al

Explanation:

Given data:

Mass of Al = 20 g

Number of atoms of Al = ?

Solution:

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.

We will calculate  the number of moles of Al first:

Number of moles = mass/molar mass

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0.74 mol ×  6.022 × 10²³ number of atoms / 1 mol

4.5 × 10²³ number of atoms Al

5 0
3 years ago
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