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podryga [215]
3 years ago
9

What are chemical contaminants?

Chemistry
1 answer:
AleksandrR [38]3 years ago
8 0

Answer:

Homemade soaps

Restaurant grade cleaners

Alcohol.

Explanation:

The two options are a mixture of more than one chemical constituents.

Soap is made from saponification reaction of of hydrocarbons and then mixed with other ingredients for better usability, and cleaning agent have one or more substances dissolved in another.

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Justin mixed two clear liquids together during an experiment and made the following observations:
svp [43]

Answer:

B. A chemical change occurred which caused the liquid's physical properties to change.

Explanation:

The reduction of the temperature of the system meant that the reaction absorbed heat energy from it. This shows that a chemical reaction was in progress. New products were formed, and this is proved by the change in the color to blue.  

6 0
3 years ago
Read 2 more answers
A 15.0 L tank of gas is contained at a high pressure of 8.20 x 10^4 torr. The tank is opened and the gas expands into an empty c
Inga [223]

Answer:

20.5torr

Explanation:

Given parameters:

V₁  = 15L

P₁  = 8.2 x 10⁴torr

V₂ = 6 x 10⁴L

Unknown:

P₂  = ?

Solution:

To solve this problem we have to apply the claims of Boyle's law.

Boyle's law is given mathematically as;

            P₁ V₁   = P₂V₂

where P₁ is the initial pressure

          V₁ is the initial volume

           P₂ is final pressure

           V₂ is final volume

   8.2 x 10⁴  x 15  = P₂  x 6 x 10⁴

         P₂  = 20.5torr

5 0
2 years ago
Please help me with this. i also need to know what the word heat means.
aliina [53]
Heat is like the fire it’s hot.
I think it’s B
Sorry if I’m wrong
3 0
2 years ago
1. In which order does food travel through the digestive
lisov135 [29]

Answer:

B :)

Explanation:

Trachea is were oxygen is entered :D (5 stars?)

7 0
3 years ago
A radio station has a frequency of 9.09 x 107 Hz. What is the energy of the radio waves the station emits from its radio tower?
TEA [102]

Answer:

well it depends of the distance, but u get your frequency and u times it by a round number if im correct

Explanation:

5 0
2 years ago
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