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VikaD [51]
4 years ago
8

The last one thanks guys this is worht 50 point

Chemistry
1 answer:
vovikov84 [41]4 years ago
6 0

5. adaption

6. neck of giraffe

7. endangered

8. extinct

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Which is correct if 15,390,000 is rounded to two significant figures?
BARSIC [14]

Answer:

Explanation:

Remark

This is one of those questions that you need the choices. You can't tell what you should enter. For example, in scientific notation, you would get 1.5*10^7.

Or you could keep it as an integer and round to two places 150,000,000,

I would pick scientific notation if you know how to use it. Otherwise use the interger format.

7 0
2 years ago
D Which compound is insoluble in water?
densk [106]

Answer:

Examples of substances insoluble in water: oil, acetone, ether

Explanation:

Such examples of substances are non-polar and do not dissolve in water (polar compound). The classic example is oil floating in water (this happens because oil has a lower density than water).

3 0
4 years ago
What is the percent yield of water from the combustion of propane (C3H8), if my theoretical yield is 8.17g of water and my actua
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Explanation:

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5 0
3 years ago
The composition of blood is: 55% plasma, 45% formed elements. 45% plasma, 55% formed elements 50% plasma, 50% formed elements no
n200080 [17]

Answer:

55% plasma, 45% formed elements.

Explanation:

Hope this helps!

5 0
2 years ago
Hydrochloric acid and sodium hydroxide can be combined to form sodium chloride and water. Which best explains the reaction?
LuckyWell [14K]

Answer:

The mass of sodium hydroxide will result in the same mass of sodium chloride.

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The mass of hydrochloric acid will result in the same mass of sodium chloride.

The total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water

Explanation:

7 0
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