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swat32
3 years ago
13

When heating liquid materials in laboratory glassware, a student should always

Chemistry
2 answers:
Lelechka [254]3 years ago
5 0

Answer:

be careful to not hurt yourself

Nady [450]3 years ago
4 0

Answer: make sure the liquid is pointing away from the face

Explanation:

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In the investigation "Comparing the Effects of the Products of Cellular Respiration
Marianna [84]

The solution changed color because the substances are not neutral.

<h3>pH</h3>

Chemical substances have different concentrations of the hydrogen cation, called PH.

The higher the pH, the more basic the substance, and the lower the more acidic.

Bromothymol blue is a pH indicator that changes its color according to the pH of the substance, yellow for acid, blue for basic and green for neutral.

In the case of the reactions in question, we have the release of CO2 (acid) in combustion and in cellular respiration, changing the color of bromothymol blue to yellow.

Learn more about pH in: brainly.com/question/491373

3 0
2 years ago
A ____ has a mass of almost zero<br> A. Proton<br> B.Neutron<br> C. Electron<br> D.lon
valentina_108 [34]

Answer:

C.electron po yung sagot

Explanation:

because electron has a 0.0005 mass

and -1 charge.

thanks me later

7 0
3 years ago
Which of the following could be used to describe the rate of a reaction?
lyudmila [28]
Change in concentration/change in time.(C).
3 0
3 years ago
Read 2 more answers
For neap tides, what must the angular alignment be between the sun, earth and moon?
butalik [34]

Answer:

The angular alignment is 90 degrees

Explanation:

The neap tide is a type of tide which occurs around seven days after a spring tide. This type of tide happens twice every month.

The tide is usually moderate and it exists when the sun and moon are usually at right angles to each other when it occurs. A right angle is also known as 90 degrees which validates the tide occurring at an angle 90.

4 0
3 years ago
Sam washed his favorite pair of jeans. He hung the wet jeans on a clothesline outside. An hour later the jeans were dry.
sertanlavr [38]

Answer:

THe sun evapored the water and the wind helped dry it to.

Explanation:

3 0
3 years ago
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