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makkiz [27]
3 years ago
10

Give examples which indicate that nylon fibres are very strong.​

Chemistry
1 answer:
Readme [11.4K]3 years ago
3 0

Explanation:

is used for making ropes, used for climbing rocks and for making parachutes. Their usage shows that nylon fibres have high tensile strength

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Which of the following statements about steroid hormones is true?
Len [333]

Answer:

B. They bind to carrier proteins in order to be transported in the blood to

their target cells.

Explanation:

Steroid hormones are belongs to the class of chemical compound called steroid. Steroid hormones are majorly secreted by three glands - ovaries, testes and adrenal cortex.

Steroid hormones are released in the blood and are allowed to bind to the specific carrier proteins such as corticosteroid-binding globulin and albumin which helps them to carry to the target cells for the functioning.

The steroid hormone binds to receptor proteins in the target cell and not in the plasma membrane

Hence, the correct answer is "B. They bind to carrier proteins in order to be transported in the blood to  their target cells."

8 0
3 years ago
Given 12 g of aluminum, how many moles do you have?
MaRussiya [10]

Answer:

0.168631 \ moles \ Al

Explanation:

Atomic mass of Al is given as 26.982u, where u is the unified atomic mass unit.

u is defined as \frac{1}{12}th the mass of a neutral carbon-12 atom. This is equal to the mass of one \ nucleon<em>. Therefore:-</em>

<em />1u=1g/mol\\<em />

Mole constant=6.022\times10^{23} atoms of any element.

For Al of 12g:-

12\times \frac{1 \ mole \ Al}{26.982g}\\=0.168631 \ moles=12\times\frac{1 \ mole \ Al}{26.982g}\\=0.168631 \ moles \ Al

6 0
3 years ago
What do atomic-scale models show you that your observations of properties cannot?
Zigmanuir [339]
The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element.
4 0
3 years ago
which of the following methods is most appropriate to use to determine the number of different-colored components in a sample of
Andru [333]

The answer is paper chromatography using different solvents with a range of polarities as the mobile phase.

Paper chromatography- Low-molecular-mass molecules can be separated using paper chromatography based on how evenly they are distributed in the stationary and mobile phases. Paper chromatography is regarded as a potent analytical technique because of its low cost and the availability of numerous procedures for the separation of chemicals.

A small amount of a sample solution is poured onto a strip of chromatography paper in a paper chromatography experiment. After that, a solvent is used to suspend the chromatography paper. The sample solution's constituent components split out into bands of distinct hue as the solvent goes up the paper.

The speed of the chromatography process is influenced by the solvent's polarity. Therefore, we may conclude that all of the other components in the mixture move more quickly during the chromatography experiment if the solvent's polarity is increased.

Thus, answer is paper chromatography using different solvents with a range of polarities as the mobile phase.

To learn more about paper chromatography refer- brainly.com/question/1394204

#SPJ4

3 0
1 year ago
Explain why non ionic compounds are soluble in water ?
leonid [27]
Water also dissolves non-ionic substances.This is because C2H5OH has a polar Oh and the bond that the water molecules like to hang around. Many substances do not dissolve in water and that is because they are non-polar and do not interact well with water molecules. A common example is oil and water.
5 0
4 years ago
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