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Dmitrij [34]
2 years ago
12

Brainiest plsss helpp

Chemistry
2 answers:
djyliett [7]2 years ago
8 0

Answer:

b 13kg/m³ is the answer to this question

Marina86 [1]2 years ago
6 0

Answer:

A) 19320 kg/m^3

Explanation:

hope this helps and please give me brainiest if i get it correct or if you want? i would be happy if you did :D

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The formula for that compound is AlN

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A silicon wafer with dimensions 15.00 cm x 15.00 cm x 0.0400 cm
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The silicon wafer contains 20.96 g of silicon.

The mole of a substance is related to its mass and molar mass by the following equation:

<h3>Mole = mass / molar mass ....... (1)</h3>

Making mass the subject of the above equation, we have

<h3>Mass = mole × molar mass ..... (2)</h3>

With the above formula (i.e equation 2), we can obtain the mass of silicon in the wafer as follow:

Mole silicon = 0.746 mole

Molar mass of silicon = 28.09 g/mol

<h3>Mass of silicon =? </h3>

Mass = mole × molar mass

Mass = 0.746 × 28.09

<h3>Mass of silicon = 20.96 g</h3>

Therefore, the mass of silicon in the wafer is 20.96 g

Learn more: brainly.com/question/24639749

3 0
2 years ago
Will mark as brainiest <br> Please help
Levart [38]

Answer:

  1. metal sulfate
  2. metal sulfate
  3. copper sulfate
  4. copper nitrate
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  6. copper phosphate
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How is the periodic table organized?
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Answer:

The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.

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