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Shtirlitz [24]
3 years ago
12

Nonmetals tend to boil at

Chemistry
1 answer:
Usimov [2.4K]3 years ago
7 0

Answer:

D) Low temperatures

Explanation:

Non-metals are elements that do not show metallic characteristics like heat conductivity, electrical conductivity, malleability, e.t.c. They are generally less dense and are bonded with weak forces in between their compounds.

The weakness of non-metals is the chief reason why they generally tend to have low boiling point. Only the presence of impurities can cause an elevation in their boiling points.

Metals on the other hand are good heat conductors and they generally have a high boiling point.

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The octane number of gasoline is a measure of octane activity. The octane activity is determined by comparing the engine perform
Semmy [17]

Answer:

A. True

Explanation:

The octane number is determined by comparing the characteristics of gasoline to isooctane (2,2,4-trimethylpentane) and heptane. The correct option is option A.

Basically, the higher the octane  number, the  greater the resistance of the gasoline to knocking.

4 0
3 years ago
In terms of energy, when atoms chemically bond to form a stable compound:_____.
Gennadij [26K]

Answer:

  A. Energy is released

Explanation:

Energy is only released when chemical bonds are formed.

3 0
3 years ago
The SI unit of measure for length - the meter -would be most appropriate when
erastovalidia [21]

Answer:- The correct answer is B. measuring the height of a building.

Explanations:- Insects and ants are very small. So, meter is not the right unit of measure their length. Their lengths would be measure in mm that is millimeters. So, options A and C are not good.

The distance between two cities is mostly too much so it's measured in kilometers or miles. So, D is also not good.

Height of buildings is measured in meters and so the correct option is B.


7 0
3 years ago
Question 2 (1 point)
alisha [4.7K]

To calculate an electron configuration, divide the periodic table into sections to represent the atomic orbitals, the regions where electrons are contained. Groups one and two are the s-block, three through 12 represent the d-block, 13 to 18 are the p-block and the two rows at the bottom are the f-block.

7 0
3 years ago
What is the theoretical yield of this test reaction? Record answer to the nearest whole number.
NNADVOKAT [17]

Answer : The theoretical yield of water in this reaction is 360 g.

Solution : Given,

Mass of

Mass of

Mass of

Molar mass of  = 44 g/mole

Molar mass of  = 24 g/mole

Molar mass of  = 18 g/mole

First we have to calculate the moles of  and .

Moles of  =

Moles of  =

The given balanced chemical reaction is,

From the given reaction, we conclude that

1 mole of  react with 2 mole of

20 moles of  requires  of

But the actual moles of  = 42 moles

Excess moles of  = 42 - 40 = 2 moles

So,  is the limiting reagent.

Now we have to calculate the mass of .

From the reaction, we conclude that

1 mole of  gives 1 mole of

20 moles of  gives 20 moles of

Mass of  = Moles of  × Molar mass of  

Mass of  = 20 moles × 18 g/mole = 360 g

The experimental yield of  = 325 g

Therefore, the theoretical yield of  = 360 g

Read more on Brainly.com - brainly.com/question/2525928#readmore

7 0
3 years ago
Read 2 more answers
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