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krok68 [10]
2 years ago
6

81. Predich Describe what might happen if you put a sealed glass container full of water into a freezer.

Chemistry
1 answer:
castortr0y [4]2 years ago
3 0

Answer:

When liquid water reaches the freezing point, it expands. After placing a sealed glass container full of water into the freezer, we might expect it to freeze, expand, and either crack or shatter the glass.

Explanation:

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How does a scientific theory differ from a scientific law?
Bas_tet [7]

1.A law is an observation; a theory is the explanation of that observation.

2.A theory requires experimentation under various conditions. A law has no such requirements.
3.A theory may become obsolete with time. This is not the case with a law.
4.A theory can be replaced by another better theory; however, this never happens with a law.
5.A theory may be strong or weak according to the amount of evidence available. A law is a universally observable fact.


Hope this helps:)


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You are taking a scuba diving training course. The instructor is discussing
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8 0
3 years ago
The chemical definitions of acids and bases for Arrhenius are:
Cloud [144]

Answer:

Explanation:

Arrhenius defined an acid as a substance that interacts with water to produce excess hydrogen ions in aqueous solution.

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Bronsted-Lowry theory defined an acid as a proton donor while a base is a proton acceptor.

6 0
3 years ago
what is the empirical formula of a compound that contains 15.77% aluminum, 28.11% sulfur and 56.12% oxygen
Marizza181 [45]
<h3>Answer:</h3>

Al₂(SO₄)₃

<h3>Explanation:</h3>

We are given percentage composition of elements in a compound;

  • Aluminium is 15.77%
  • Sulfur is 28.11 %
  • Oxygen is 56.12%

We are required to calculate the empirical formula of the compound.

  • Assuming the mass of the compound is 100 g then the masses of the elements is;

Aluminium = 15.77 g

Sulfur = 28.11

Oxygen = 56.12

We can determine the number of moles of each;

Moles of Aluminium = 15.77 g ÷ 26.98 g/mol

                                 = 0.585 moles

Moles of sulfur = 28.11 g ÷ 32.07 g/mol

                         = 0.877 moles

Moles of Oxygen = 56.12 g ÷ 16.0 g/mol

                            = 3.5075 moles

  • But, the empirical formula is the simplest whole number ratio of elements in a compound.
  • Therefore; we need to get the ratio of moles of the above elements;

Aluminium : Sulfur : Oxygen

0.585 mol  :  0.877 mol : 3.5075 mol

0.585/0.585 : 0.877/0.585 : 3.5075/0.585

    1 : 1.5 : 6

But, we need whole number ratios, therefore;

= (1 : 1.5 : 6 ) × 2

= 2 : 3 : 12

Therefore; the formula of the compound is Al₂S₃O₁₂

The compound is written as Al₂(SO₄)₃

Thus, the empirical formula of the compound is Al₂(SO₄)₃

3 0
3 years ago
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