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labwork [276]
3 years ago
9

How many atoms are in FeS₂?

Chemistry
1 answer:
hammer [34]3 years ago
6 0

Surface model,we used a supercell of

16.1106×16.1106×18.0 And a model of a 3 × 3

9 atoms..

<h3><u>if</u><u> this</u><u> answer</u><u> helps</u><u> you</u><u> plz</u><u> mark</u><u> as</u><u> brainlist</u><u>.</u><u>.</u></h3><h2><u>But</u><u>,</u><u> don't</u><u> </u><u>report </u><u>my</u><u> answer</u><u>.</u><u>.</u></h2>

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How many valence electrons does an atom of Iodine have?<br><br> a) 5 <br> b) 6 <br> c) 7 <br> d) 8
baherus [9]
The answer is 7 !! :)
8 0
2 years ago
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What do you think explains why the larger elements are able to form in a supernova explosion? Use evidence from the Supernova 10
lubasha [3.4K]

Larger elements are able to form in a supernova explosion because the star releases very large amounts of energy as well as neutrons, which allows elements heavier than iron to be produced.

<h3>What is Supernova?</h3>

This is referred to the explosion of a star and it resulting in larger elements being formed through a process known as nucleosynthesis and is usually accompanied by an increase in the brightness of the star.

The elements produced are usually larger than elements such as iron and examples include uranium, gold etc.

This is therefore the reason why it was chosen as the most appropriate choice.

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3 0
1 year ago
ANSWER THIS PLS IM LEGIT DYING HERE
Free_Kalibri [48]
<span>In the written directions the indicator that the matter contains protein is when the solution turns a purple color. Therefore we can conclude that if your sample causes the solution of Copper Sulfate and Sodium Hydroxide to turn purple, it does indeed contain protein.</span>
8 0
3 years ago
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An artifact contains 1/4 as much carbon-14 as the atmosphere. How old is the artifact
musickatia [10]
The artifact appears to have gone through 2 half-lives. 
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After another 5730 years, there would be 1/4 as much carbon-14

The answer is roughly 11,460 years
4 0
3 years ago
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gavmur [86]
There are a number of ways to reduce friction:

Make the surfaces smoother. Rough surfaces produce more friction and smooth surfaces reduce friction. Some swimmers wear suits to reduce underwater resistance. These suits mimic the smooth skin of sharks.

Lubrication is another way to make a surface smoother. A lubricant is a slippery substance designed to reduce the friction between surfaces. You might use oil to stop a door from squeaking - the oil reduces the friction in the hinge. Water can be used as a lubricant - think of how a floor becomes slippery after it has been mopped.

Make the object more streamlined. A streamline shape is one that allows air or water to flow around it easily, offering the least resistance. Compare a boxy old car with a new car that has a rounded shape, allowing it to move with less effort.

Reduce the forces acting on the surfaces. The stronger the forces acting on the surfaces, the higher the friction, so reducing the forces would reduce the friction. If you apply the handbrake when you try to drive a car, the car will have a lot of difficulty moving because of the force immobilising (stopping the movement of) the wheels. If you release the handbrake, the wheels will move more freely because there is no extra force acting on them.

Reduce the contact between the surfaces. Have you ever tried to roll a cube? Spheres are the best shape for reducing friction because very little of a spherical object is in contact with the other surface. Several types of wheels, such as skateboard wheels, contain small spheres called ball bearings to reduce the friction between the moving parts. You can witness the effect of ball bearings by comparing the friction between sliding a book on a table and then doing the same, but using marbles between the book and the surface of the table. Notice how the marbles act as ball bearings, reducing the friction.

8 0
3 years ago
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