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Bess [88]
3 years ago
10

Which substances are made up of polymers? DNA , a glass bottle , ice crystals , the proteins in hair , rubber car tires.

Chemistry
1 answer:
lana66690 [7]3 years ago
6 0

Answer:

proteins in hair

Explanation:

proteins are polymers of amino acids. so if proteins are polymers of amino acids it means that proteins in hair are made of polymers

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Suggest a procedure for separating iron shavings from sawdust. Explain why this procedure would work.
Mrac [35]

Answer:

Magnetic separation

Sawdust is a non-magnetic material whereas iron shavings are magnetic. When a magnet is brought near a mixture of iron shavings and sawdust, the iron shavings will be attracted to the magnet while the sawdust will not. Thus, the iron shavings will be separated from the sawdust.

Explanation:

Separation techniques makes use of the differences in the properties of components of mixtures to separate theses components, one from another.

In a moxturemof iron shavings and sawdust, a suitable separation technique would be the use of magnetic separation.

The use of this separation technique is abasednonnthe principle that when a magnetnis brought near to a mixture containing magnetic and non-magnetic materials, the magnetic materials will be separated from the non-magnetic materials due to their attraction to the magnet. Sawdust is a non-magnetic material whereas iron shavings are magnetic. When a magnet is brought near a mixture of iron shavings and sawdust, the iron shavings will be attracted to the magnet while the sawdust will not. Thus, the iron shavings will be separated from the sawdust.

5 0
3 years ago
Why is detergent called soapless soap​
anzhelika [568]

Answer:

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Explanation:

8 0
3 years ago
Name the region of the atom where protons and neutrons are located.
inn [45]

Answer:

Nucleus

Explanation:

5 0
3 years ago
Seleect the acid-base reaction.
erastova [34]

Answer:

<h2>hi</h2>

Explanation:

bye answer is I don't know lol

8 0
3 years ago
Read 2 more answers
PLS HELP THESE ARE RHE ONLY QUESTIONS I HAVE LEFT DUE SOON
tia_tia [17]

Explanation:

Magnesium reacts with dilute hydrochloric acid in a conical flask which is connected to an inverted measuring cylinder in a trough of water. The volume of hydrogen gas produced is measured over a few minutes, and the results are used to plot a graph

This is intended as a class practical. It is best if the students work in pairs because setting up and starting the experiment requires more than one pair of hands. One student can add the magnesium ribbon to the acid and stopper the flask, while the other starts the stopclock. During the experiment, one student can take the readings while the other records them. The experiment itself takes only a few minutes. But allow at least 30 minutes to give students time to set up, take readings and draw graph.

please mark as brainliest

8 0
3 years ago
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