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Helga [31]
3 years ago
11

3. Are quartz and coal minerals or only naturally occurring substances?

Chemistry
1 answer:
klasskru [66]3 years ago
6 0

Answer:

minerals

Explanation:

coal is made from decomposing matter

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2. When protein is digested by the body, what molecule do they become?
labwork [276]

Answer:

Amino acid

Explanation:

When you eat food the body's digestive system breaks down the protein into the individual amino acids, which are absorbed and used by cells to build other proteins and a few other macromolecules, such as DNA

7 0
2 years ago
Magnesium reacts with hydrochloric acid (HCl) as follows. mc025-1.jpg How many milliliters of hydrogen gas are produced by the r
Juliette [100K]

Answer: 448 mL of hydrogen gas.

Solution:

Mg(s)+HCl(aq)\rightarrow MgCl_2(aq)_+H_2(g)

Now,according to reaction

1 mole of magnesium produces one mole of hydrogen gas.

Then 0.020 moles of magnesium will produce 0.020 moles of hydrogen gas.

Moles of H_ gas : 0.020 mol

At STP, 1 mol of gas occupies 22.4 L

So volume of 0.020 mol of H_2produced at STP :

= 22.4/times 0.020 = 0.448 L = 448 mL    (1L=1000mL)

8 0
4 years ago
Read 2 more answers
Which action would not help a person stay safe during a tornado? O A. Moving away from outside walls B. Going into a storm shelt
Andrew [12]

Answer:

Driving to get supplies

Explanation:

8 0
3 years ago
Parts of a neuron include:<br> A. dendrites.<br> B. hormones.<br> C. cortexes.<br> D. collosums.
Tcecarenko [31]

The parts of the neuron include (A) dendrites.

<h3>What are dendrites?</h3>
  • Dendrites are appendages that are designed to receive communications from other cells.
  • They take the shape of projections with a tree-like structure that are triggered by other neurons and carry the electrochemical charge to the cell body.
  • These occupy a large surface area of a neuron.
  • These little appendages convey electrical stimulation to the soma and take in information from neighboring neurons.
  • Synapses are also found on dendrites.
  • Dendrites are also called the "arms" of a neuron.

As it is given in the description, Synapses are also found on dendrites.

Therefore, the parts of the neuron include (A) dendrites.

To learn more about dendrites, click on the link:

brainly.com/question/11364230

#SPJ13

8 0
2 years ago
Which best describes the effect of J. J. Thomson’s discovery?
sergey [27]

answer is A the accepted model of the atom was changed

3 0
3 years ago
Read 2 more answers
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