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garik1379 [7]
3 years ago
6

Through what process do humans and animals get the energy they need?

Chemistry
1 answer:
xenn [34]3 years ago
8 0

Answer:

C heat energy

Explanation:

You might be interested in
Aliyah marks a line on her driveway with a piece of chalk and another line 50ft away Then she stands with both feet at the line
Mariulka [41]

Answer:

Speed

Explanation:

Aliyah must have been trying to find her speed.

The speed is a measure of how fast an object or a body is and it is calculated by finding the ratio of distance with time. Mathematically,

  speed = \frac{distance}{time} with a unit of m/s.

<em>Hence, with the distance measured on the ground and Aliyah trying to find the time it will take her to cover the distance while running, she must have been trying to find how fast she can run, that is, speed. </em>

3 0
3 years ago
In which of the following substances does sharing of electrons between two atoms occur?
malfutka [58]

Answer:- B- SO_4^-^2

Explanations:- Sharing of electrons takes place between non metals and the bond formed by the sharing of electrons is known as covalent bond. In first choice we only have a zinc metal and so no sharing of electrons  would be possible here.

In third choice we have NaCl. Na is a metal and Cl is a non metal. The property of metals is to transfer its valence electrons to the non metal and the bond formed is known as ionic bond. So, third choice is also not correct.

In choice B we have sulfate ion that has sulfur and oxygen atoms and both of these are non metals. So, sharing of electrons is present here between the S and O atoms and covalent bonds are formed.

So, choice B- SO_4^-^2 is the right answer.


6 0
3 years ago
Which element is probably most like Carbon? and why
Zolol [24]
Silicon because it is abundant on Earth. Also, carbon and silicon are both building blocks of life.
4 0
3 years ago
Read 2 more answers
Which element is most reactive sodium,magnesium, or aluminum and why?
ludmilkaskok [199]
Magnesium would be more reactive.
6 0
4 years ago
Which of the substances in the chart has the least density?
3241004551 [841]
Answer:
            Option-D (Piece of Wood) is the correct answer.

Explanation:
                   Density is related to mass and volume as,

                             Density  =  Mass / Volume
For Wood,
                             Density  =  42.5 / 50

                             Density  =  0.85

You can calculate remaining densities by yourself. Among all the density of Piece of Wood is the least.
3 0
3 years ago
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