Help please with number 3 don’t worry I will give brainliest to the best answer!

Chemistry

2 answers:

Phoenix [80]3 years ago

8 0

The ice caps, lakes, rivers, and other bodies of water can be found all around the globe

Annette [7]3 years ago

6 0

Water is also in the form of ice in glaciers, snow, and water vapor. It is also in the clouds due to the water cycle. It is not always in liquid form.

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What's the sequence of a single complete engine cycle?

erastovalidia [21]

Answer:

Intake, compression, power, and exhaust

Explanation:

A four-stroke cycle engine is an internal combustion engine that utilizes four distinct piston strokes (intake, compression, power, and exhaust) to complete one operating cycle. The piston make two complete passes in the cylinder to complete one operating cycle.

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3 years ago

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Which of the following forms a molecular solid?<br>Select one:

Gelneren [198K]

Methane (CH4) forms the molecular solid.

<u>Explanation:</u>

The molecules which are held together by intermolecular forces are called molecular solids. It is maintained by solids rather than bonds. The force which holds these solids are weaker than other solids.
It consists of discrete molecules and the cohesive force which binds them together is Vanderwall's force, dipole-dipole interaction and hydrogen bonding. They are held together by an ionic bond or covalent bond.
The weak intermolecular forces have relatively low melting points which are less than 300 degrees Celsius.
Organic solvents dissolves Molecular solvents. Many of the molecular solids are soft electrical insulators with low density.

5 0

3 years ago

Which one of the following classes of organic compound does not contain the carbonyl (C=O) group?A) aldehydesB) carboxylic acids

vredina [299]

Answer: alcohols

Explanation:

The carbonyl group refers to C=O. It is contained in aldehyde, Ketones, carboxylic acids , esters, amides and acyl chlorides. They are not found in alcohols. The alchols are generally ROH. They do not contain any carbon-oxygen unsaturated bond in their structure hence the answer.

3 0

3 years ago

To what temperature must a sample of nitrogen at 27°C and 0.625 atm be taken so that it’s pressure becomes 1.125 atm at constant

Karo-lina-s [1.5K]

Answer:

The sample of nitrogen must be taken to 267 $^{0}\textrm{C}$ .

Explanation:

Let's assume nitrogen gas behaves ideally.

Here amount of nitrogen gas in both states remain constant.

So, in accordance with combined gas law for a given amount of an ideal gas in two different states: $\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}$

where $P_{1}$ and $P_{2}$ are initial and final pressure respectively. $V_{1}$ and $V_{2}$ are initial and final volume respectively. $T_{1}$ and $T_{2}$ are initial and final temperature (in kelvin scale) respectively.