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4 years ago

When should a lab coat, safety goggles, and gloves be worn in the laboratory?

2 answers:

8 0

I would say that you should wear a lab coat, safety goggles, and gloves when the teacher says so - not everything in a lab is dangerous, so there is no need to always wear these. But when the teacher says you should - then you should.

Genrish500 [490]4 years ago

5 0

I would say you should wear it in a lab when you are working with dangerous chemicals. not any chemical is dangerous. hope this helped! :)

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I need helpppp

Nata [24]

Answer:

Fe₂(SO₄)₃ + 6KOH —> 3K₂SO₄ + 2Fe(OH)₃

The coefficients are: 1, 6, 3, 2

Explanation:

__Fe₂(SO₄)₃ + __KOH —> __K₂SO₄ + __Fe(OH)₃

To determine the correct coefficients, we shall balance the equation. This can be obtained as follow:

Fe₂(SO₄)₃ + KOH —> K₂SO₄ + Fe(OH)₃

There are 2 atoms of Fe on the left side and 1 atom on the right side. It can be balance by writing 2 before Fe(OH)₃ as shown below:

Fe₂(SO₄)₃ + KOH —> K₂SO₄ + 2Fe(OH)₃

There are 6 atoms of OH on the right side and 1 atom on the left side. It can be balance by writing 6 before KOH as shown below:

Fe₂(SO₄)₃ + 6KOH —> K₂SO₄ + 2Fe(OH)₃

There are 6 atoms of K on the left side and 2 atoms on the right side. It can be balance by writing 3 before K₂SO₄ as shown below:

Fe₂(SO₄)₃ + 6KOH —> 3K₂SO₄ + 2Fe(OH)₃

Now, the equation is balanced.

Therefore, the coefficients are: 1, 6, 3, 2

3 0

3 years ago

An interaction between atoms that holds them together by reducing the potential energy of their electrons

Lemur [1.5K]

Answer:

Chemical bond

Explanation:

Chemical bond is refer to as the interaction existing between two or more atoms, ions or molecules that holds them together by decreasing the potential energy of their electrons. Chemical bond leads to the formation of chemical compounds. Chemical bond may occur as a result of the electrostatic force of attraction that exists between oppositely charged ions such as those in ionic bonds or when electrons are shared such as those in covalent bonds.

6 0

3 years ago

Using household measuring tools use these conversions to record is a capacity of the bottle milliliters 1 cup equals 240 mL in 1

jolli1 [7]

The tool was 57 ml so he must have got

6 0

3 years ago

Read 2 more answers

The _______ energy in a mechanical system is determined by adding the potential and kinetic energy together.

Semenov [28]

Answer:

I want to say your answer is Mechanical

5 0

3 years ago

Which equation correctly demonstrates the equilibrium that exists in liquid water?

Sindrei [870]

Answer:

The answer is 4.

Explanation:

According to the first sentence of the paragraph an answer have to include H+ and OH- . That leaves 2 and 4. And 2 is not a balanced reaction since there are more moles on the right than the left. That leaves 4 as the only answer that shows the equilibrium that includes the OH and H+ and is balanced.

4 0

3 years ago