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Ilya [14]
3 years ago
10

Match each organ or function with its body system.

Chemistry
2 answers:
crimeas [40]3 years ago
8 0
Hello!!!!

Respiratory:1,4,5
Circulatory:2,3,6

Hope this helps!
d1i1m1o1n [39]3 years ago
4 0

Answer:

<u>Integumentary </u>- Skin, provides exterior barrier, nails

<u>Excretory </u>- bladder, kidneys, excretes waste

Explanation: its not that hard

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How do I balance this equation? ?KNO3 → ?K2O + ?N2(g)+ ?O2(g) and what type of reaction is it?
nirvana33 [79]

Answer:

4KNO3 ==> 2K2O + 2N2 + 5O2

Explanation:

It's a decomposition, but not a simple one.

KNO3 ==> K2O + N2 + O2   I don't usually do this, but I think the easiest way to proceed is to  balancing the K and N together. That will require a 2 in front of KNO3

4KNO3 ==> 2K2O + 2N2 + 5O2

Now you have (3*4) = 12 oxygens. Two are on the K2O. So the other 10 must be on the O2

That should do it.

3 0
3 years ago
5. How many elements do we have in Octane?
jekas [21]

Answer:

2 elements

Explanation:

Octane is composed of carbon and hydrogen atoms.

3 0
3 years ago
1. Communication is an important last step of the scientific method. What is the best reason to communicate conclusions?
Shalnov [3]
1. A
2.C
3.A
4.C
5.B

I really hope this isn't cheating and that you can actually do this for yourself and you just want to double check. To study just read the Scientific Method and memorize it
6 0
3 years ago
If oxygen with an electronegativity of 3.5 were to make a chemical bond with lithium, electronegativity of 1.0, what kind of bon
sergejj [24]

Answer:

Ionic.

Explanation:

Elements with higher electronegativity values are better at attracting electrons in a chemical bond.  

  • A chemical bond is considered "ionic" if the electronegativity difference between the two bonding atoms is greater than 1.8.
  • Otherwise, this chemical bond is considered "covalent".

In this example, the difference between the electronegativity of oxygen and lithium is 3.5 - 1.0 = 2.5. Since 2.5 > 1.8, the bond between the two elements would likely be ionic.

It is possible to reach the same conclusion based on the fact that lithium is a metal while oxygen is a nonmetal. When metal elements react with non-metal elements, the product is typically an ionic compound- with ionic bonds between the atoms.

6 0
2 years ago
I will mark brainliest
earnstyle [38]

Answer:

a b c are correct and rest of other are incorrect

8 0
2 years ago
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