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daser333 [38]
2 years ago
13

Math each description below with the following microscopic pictures(pls help!!!!!)

Chemistry
1 answer:
Keith_Richards [23]2 years ago
6 0

The microscopic pictures i, iii, iv, v, and vi are associated with the descriptions a, d, a, c, and b, respectively. Picture ii <u>does not match</u> with the given options.    

To associate each description with the pictures we need to remember that:

  • Gas is a state in which atoms or molecules move freely around. The gases tend to expand to occupy all the space of the container.    
  • A solid is a state in which the <em>atoms </em>or <em>molecules </em>are very close to each other and cannot move freely, so they will not tend to occupy all the space as the gases do.

 

Now, let's evaluate each description.

<u>Picture i</u>

In this image, we can see the movement of diatomic gases (or gaseous compounds) composed of the same element. An example of this can be nitrogen gas (N₂), oxygen gas (O₂), hydrogen gas (H₂), and others.  

So, this is related to option a: <u>a gaseous compound</u>.

 

<u>Picture ii</u>  

In this, we can see a mixture of gaseous compounds composed of different elements, denoted by different colors (blue and orange). An example can be the mixture of monoxide carbide (CO) with nitrogen (N₂).

Hence, this is associated with a mixture of two gaseous compounds. There is no option related to this image.  

<u>Picture iii</u>

In the image, we can see a mixture of monoatomic and diatomic gases. The <em>diatomic gases</em> are composed of <em>two different elements</em> (blue and orange colors).

Therefore, this is related to option d:<em> </em><u>a mixture of gaseous elements and gaseous compounds</u>.

<u>Picture iv</u>

This image is similar to picture i, but in this, the gaseous compounds are composed of two different elements.

Hence, this description is related to option a: <u>a gaseous compound</u>.

<u>Picture v</u>

In this, we can see that the <em>atoms </em>are <em>close to each other</em>, which corresponds to a solid-state.

Then, this is related to option c: <u>a solid element.</u>

<u>Picture vi</u>

We can see the presence of a mixture of two gaseous elements (both monoatomics), because of the two different colors.

So, this is related to option b: <u>a mixture of two gaseous elements</u>.  

Therefore, the descriptions of the pictures i, iii, iv, v, and vi are related to options a, d, a, c, and b, respectively. Picture ii does not match with the given options.    

You can learn more about solids here:

  • brainly.com/question/11549004?referrer=searchResults
  • brainly.com/question/14424882?referrer=searchResults      

I hope it helps you!  

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Yanka [14]

Taking into account the scientific notation, the result of the sum is 10.84300×10³.

  • <u><em>Scientific notation</em></u>

First, remember that scientific notation is a quick way to represent a number using powers of base ten.

The numbers are written as a product:

a×10ⁿ

where:

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  • <u><em>Sum in scientific notation</em></u>

You want to add two numbers in scientific notation. It should be noted that when the numbers to be added do not have the same base 10 exponent, the base 10 power with the highest exponent must be found. In this case, the highest exponent is 3.

Then all the values ​​are expressed as a function of the base 10 exponent with the highest exponent. In this case: 9.7300×10²= 0.97300×10³

Taking the quantities to the same exponent, all you have to do is add what was previously called the number "a". In this case:

0.97300×10³ + 9.8700×10³= (0.97300+ 9.8700)×10³= 10.84300×10³

Finally, the result of the sum is 10.84300×10³.

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3 0
2 years ago
How many grams of hydrogen chloride can be produced from 1g of hydrogen and 55g of chlorine? What is the limiting reactant?
vova2212 [387]

Answer:

The limiting reactant is hydrogen, and the grams HCl produced is 36.175 g.

Explanation:

Balanced equation is 2 H + Cl2 = 2 HCl.

First thing, convert grams to moles via using molar mass.

Molar mass for hydrogen is 1.0079 g/mol. 1g x 1 mol / 1.0079 g = 0.99216 mol.

Molar mass for chlorine is 70.906 g/mol. 55g x 1 mol / 70.906 g = 0.7756748 mol.

Next, determine which is the limiting reactant - probably the fastest way to do it is just to take one of the reactants, say it's the limiting one, and calculate how much of the other reactant would be needed if that really was the limiting reactant, and then compare it to the actual moles of reactant available.

If hydrogen was the limiting reactant at 0.992 mol, you'd need .496 mol of Cl2 to complete the reaction.

If chloride was the limiting reactant at 0.776 mol, you'd need 1.55 mol of H to complete the reaction.

Comparing these numbers to the amounts we actually have available, the limiting reactant is hydrogen.

Once you've determined that, just plug in the amounts to the balanced equation to get the number of moles of HCL produced, which in this case, is just 0.992 mol.

Now, reverse the process that you took to get the moles of reactant, and you have the grams of product produced.

0.992 mol x 36.4609 g / 1 mol = 36.175 g.

7 0
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