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user100 [1]
3 years ago
7

Need help with this question please.

Chemistry
1 answer:
LenaWriter [7]3 years ago
6 0
The correct answer would be the last one.
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At what temperature is the average speed of air particles the highest?
Law Incorporation [45]

Answer:

Explanation:

Air is a mixture of roughly 80% nitrogen and 20% oxygen. The diatomic molecules of each type have a Maxwell-Boltzman distribution of velocities.

From the kinetic theory of gases the molecules kinetic energy will depend on the temperature.

Let’s use 300 K as room temperature : The nitrogen molecules have a root mean square velocity ( VRMS ) of 353 m/s. The average for all of the molecules is 347 m/s.

In general in gases of diatomic molecules the speed of sound is 68% of the molecular  VRMS .

8 0
3 years ago
The density of magnesium is 1.7/cm3, and the density of iron is 7.9g/cm3. Consider a block of iron with a mass of 819 g. What is
zepelin [54]
The density of magnesium is 1.7/cm3, and the density of iron is 7.9g/cm3. Consider a block of iron with a mass of 819 g. What is the mass of a block of magnesium that has the same volume as the block of iron?
3 0
3 years ago
which molecules show an appropriate number of bonds around each carbon atom? select the three that apply.
iren2701 [21]

The appropriate number of bonds around each carbon atom are four covalent bonds

Please note that carbon has four valence electrons in its outermost shell

<h3>What is an element?</h3>

An element is a substance which cannot be split into simpler forms by an ordinary chemical process. This simply goes to say that elements are substances which cannot be decomposed into simpler substances by ordinary chemical reactions.

An atom is the smallest unit or part of an element which can take part in a chemical reaction.

On a general note, elements are classified as thus:

  • Metals, non-metal, and metalloid.

  • The extreme left side elements in the periodic table are metals, for example, aluminum, sodium, calcium, caesium, etc.

  • However, elements on the right side are generally referred to as non-metals, carbon, chlorine, oxygen,

So therefore, the appropriate number of bonds around each carbon atom are four covalent bonds

Complete question:

What is the appropriate number of bonds around each carbon atom?

Learn more about atoms and elements:

brainly.com/question/6258301

#SPJ1

5 0
2 years ago
An object weighing 90 n has a volume of 45 ml and a mass of 9.0 g what is its density
UNO [17]
D= mass over volume

So, density equals 9.0g divided by 45ml.

SO, D=.25 g/ml

I'm not 100% sure this is correct, though. Best if luck. ♡
7 0
4 years ago
Volaic cells produce a positive overall charge what does this indicate
juin [17]
It means the process carried by the cell is spontaneous. 
7 0
3 years ago
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