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Alexus [3.1K]
3 years ago
12

Someone please answer this

Chemistry
1 answer:
nirvana33 [79]3 years ago
8 0

Answer:

The balanced equation would be Mg(ClO_3)2= 3O_2 + MgCl_2

Explanation:

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What is the lengthening of a muscle without damage? And what is the shortening of a muscle?
siniylev [52]

Answer:

Stretching is the lengthening and contraction is the shortening

Explanation:

Unless it's asking for eccentric as the stretching and concentric as the shortening

5 0
3 years ago
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
3 years ago
How many Joules of heat are released from a 400g piece of glass that has been cooled
Aleonysh [2.5K]

Answer:

400 × 22 × 0.664 = 5843.2 J

4 0
3 years ago
Please help! This is for a test and I want to have a good grade. Have a great day! :)
elena-s [515]

Answer:

genetic engineering !! :)

Explanation:

also, i love the pfp <3

6 0
3 years ago
How many atoms and elements are there in C2H5OH
Hatshy [7]
Total atoms is 9 ( 2 carbon atoms, 5 hydrogen atoms, 1 oxygen atom and 1 hydrogen atom = 9 atoms)

Element is 3 ( Carbon, Hydrogen and Oxygen)
6 0
3 years ago
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