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Firlakuza [10]
3 years ago
5

Solids can be classified into three bonding patterns. Which of the following is not one of them? a) covalent b) ionic c) metalli

c d) crystalline
Biology
1 answer:
saveliy_v [14]3 years ago
8 0
A covalent bond is a bond between two non-metals where they share a pair of electrons, like carbon dioxide (CO2).

An Ionic bonds a bond between metal and a nonmetal where the metal loses electron and becomes positively charged ion (cation) and non-metal gains electrons (from the metal) and becomes negatively charged ion (anion)

The metallic bond <span>is the sharing of many detached electrons (delocalised electrons) between many positive ions in which the electrons freely and randomly flow around (in the material). +NOTE+ delocalised electrons are needed in order for a substance to be able to conduct electricity.

Crystalline bond is you wanted. 

</span>
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Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 3 liters of
ELEN [110]

Answer:

Total 495 liters of natural oil are needed.

Explanation:

It is given that Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 3 liters of synthetic oil.

It means the ratio of natural oil and synthetic oil is

\frac{\text{Natural oil}}{\text{Petrolyn motor oil}}=\frac{5}{5+3}=\frac{5}{8}

Let in order to make 792 liters of Petrolyn oil he needs x liters of natural oil.

It means the ratio of natural oil and synthetic oil is

\frac{\text{Natural oil}}{\text{Petrolyn motor oil}}=\frac{x}{792}

Equate both ratios,

\frac{x}{792}=\frac{5}{8}

On cross multiplication we get

8\times x=5\times 792

8x=3960

Divide both sides by 8.

x=\frac{3960}{8}

x=495

Therefore total 495 liters of natural oil are needed.

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4 years ago
Some species, such as humans and pandas, take a very long time to reproduce. Why might this be adventageous to the species as a
Tanya [424]

Answer:

Reproducing is fast for some animals, but can mess up their DNA and genetics. Humans and other aninkas take a while. It has a better chance of perfect genetics and heredity from parent, this goes along with sexual and asexual reproduction.

Explanation:

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Every time there is a full moon, Mrs. Cook insists that students in her classes display strange behavior. What would be the best
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What does the cytoplasm do in the human body? where did scientists first get the word organelles?
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