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alexandr402 [8]
2 years ago
11

What does the law of conservation of matter state?

Chemistry
2 answers:
Sergio [31]2 years ago
8 0
The principle that in any closed system
11111nata11111 [884]2 years ago
6 0
Any system closed to the transfers of matter and energy means the mass of the system must remain constant over time. as system mass cannot change quantity if it is not added or removed
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What is the mass, in grams, of 122 atoms of aluminum? Round your answer to proper significant figures.
tangare [24]

Answer:

Mass = 547.02 × 10⁻²³g

Explanation:

Given data:

Number of atoms of Al = 122 atom

Mass in gram = ?

Solution:

Avogadro number:

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.

1 mole = 6.022 × 10²³ atoms

122 atom/6.022 × 10²³ atoms ×  1 mol

20.26× 10⁻²³ mol

Mass in gram:

Mass = number of moles  × molar mass

Mass = 20.26× 10⁻²³ mol  × 27 g/mol

Mass = 547.02 × 10⁻²³g

6 0
2 years ago
Bainliest. Mole Conversion
Flauer [41]

Answer:

125g × 1 mol/16 grams = 7.81 × avogadros #

3 0
2 years ago
What are atoms made of
Olegator [25]
Protons, neutrons, and electrons.
7 0
3 years ago
Read 2 more answers
Which statement best describes the liquid state of matter?
KonstantinChe [14]

Answer:D. It has indefinite shape but definite volume.

Explanation: The property and characteristics of liquids is it does not have a definite shape since it copies and conform on the shape of its container but it has a definite of fixed volume.

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3 years ago
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What is a semiconductor?
makkiz [27]
It is c: a conductor that operates only at low temperatures
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