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Keith_Richards [23]
3 years ago
9

Calcium phosphorus magnesium and fluoride mainly serve as structural components of

Chemistry
1 answer:
Ksju [112]3 years ago
5 0
The answer to this question would be: bones and teeth

Bones and teeth are made of calcium and fluoride. This makes the bone and teeth sturdy and able to take much more force. Bones are used to be the body framework and teeth is used to digest food. When the level of calcium in the blood is too low, the calcium from bones can be digested by osteoclast to increase the calcium level in the blood.
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Natural gas and petroleum are mostly alkanes t/f
dolphi86 [110]
Been a year since i was in chem but my money is on true
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3 years ago
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Four springs are stretched to the same distance from the equilibrium position. The spring constants are listed in the table. A 2
svp [43]

Answer:

The correct option is;

X, W, Y, Z

Explanation:

The parameters given are;

Spring (S),         Spring Constant (N/m)

      W,                   24

      X,                    35

      Y,                    22

      Z,                    15

The equation for elastic potential energy, E_e, is E_e = 0.5 \times k \times x^2

The above equation can also be written as E_e =\dfrac{1}{2}  \times k \times x^2

Where:

k = The spring constant in (N/m)

x = The spring extension

Therefore, since the elastic potential energy, E_e, of the spring is directly proportional to the spring constant, k, we have the springs with higher spring constant will have higher elastic potential energy, E_e, therefore the correct order is as follows;

X > W > Y > Z

9 0
3 years ago
If 100% is not passed from one trophic level to the next, where does this energy go?
Sonja [21]
D is the answer to question

6 0
3 years ago
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What is biological difference ​
topjm [15]

Answer:

Sex refers to biological differences between males and females. For example, chromosomes (female XX, male XY), reproductive organs (ovaries, testes), hormones (oestrogen, testosterone). Gender refers to the cultural differences expected (by society / culture) of men and women according to their sex.

Explanation:

4 0
3 years ago
What property of water molecules allows water to dissolve many substances
hodyreva [135]

Answer:

Its high polarity

Explanation:

Solvent is the that part of solution which is present in large proportion and have ability to dissolve the solute. In simplest form it is something in which other substance get dissolve. The most widely used solvent is water, other examples are toluene, acetone, ethanol, chloroform etc.

Water is called universal solvent because of high polarity all polar substance are dissolve in it. Hydrogen is less electronegative while oxygen is more electronegative and because of difference in electronegativity hydrogen carry the partial positive charge while oxygen carry partial negative charge.

Water create electrostatic interaction with other polar molecules. The negative end of water attract the positive end of polar molecules and positive end of water attract negative end of polar substance and in this way polar substance get dissolve in it.

Example:

when we stir the sodium chloride into water the cation Na⁺ ions are surrounded by the negative end of water i.e oxygen and anion Cl⁻ is surrounded by the positive end of water i.e hydrogen and in this way all salt is get dissolved.

5 0
3 years ago
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