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3 years ago

All synthetic materials ultimately come from

Chemistry

1 answer:

Leno4ka [110]3 years ago

7 0

Answer:

petroleum, a fossil fuel, is extracted from the earth and mechanically transformed into fibers for clothing.

Explanation:

synthetic materials, like polyester, nylon and acrylic, don't exist naturally but are made in factories. Synthetics are created through an industrial manufacturing process in which

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Who invented the light bulbs for Thomas Edison?

Troyanec [42]

The first practical incandescent light bulb. Edison and his team of researchers in Edison's laboratory in Menlo Park, N.J., tested more than 3,000 designs for bulbs between 1878 and 1880. In November 1879, Edison filed a patent for an electric lamp with a carbon filament.

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3 years ago

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Rank the ions in each set in order of increasing size, and explain your ranking:

Paha777 [63]

Explanation:

Lithium, sodium and potassium are all group 1A elements and when we move down a group then there occurs an increase in atomic size of the elements. As lithium is the smallest and potassium being the largest so, when each of them will lose an electron and obtain a positive charge then size of lithium will further decrease.

Therefore, ions are ranked according to their increase in size as follows.

$Li^{+} < Na^{+} < K^{+}$

When an atom tends to gain electrons then it acquires a negative charge. This means that size of the atom increases.

So, more is the negative charge present on an atom more will be its atomic size. Therefore, correct order of increasing size for $Se^{2-}, Rb^{+}, Br$ is as follows.

$Br < Rb^{+} < Se^{2-}$

Similarly, order of increasing size of $O^{2-}, F^{-}, N^{3-}$ is as follows.

$F^{-} < O^{2-} < N^{3-}$

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3 years ago

Perrhenic acid reacts with potassium hydroxide. Complete the word equation for this reaction. perrhenic acid + potassium hydroxi

aleksley [76]

Answer:

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3 years ago

CaCO3 Waht is the name of this compound ?

EleoNora [17]

Ca= Calcium, and (CO3) = Chloride. Ca(CO3) is Calcium Chloride!

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3 years ago

What is a forensic paleontologist? dum it down for me

raketka [301]

Answer:

Simple Definition: A Tool for “Intelligence” and Investigation

Explanation:

Intelligence is the ability to acquire and apply knowledge and skills while investigation is the action of investigating something or someone; formal or systematic examination or research.

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2 years ago

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