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slava [35]
3 years ago
6

Describe the double circulation system of the human body

Chemistry
1 answer:
Alika [10]3 years ago
4 0

Answer:

we have two loops in our body in which blood circulates. One is oxygenated, meaning oxygen rich, and the other is deoxygenated, which means it has little to no oxygen, but a lot of carbon dioxide.

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Which element has the element configuration 1s2 2s2 2p4
expeople1 [14]

Answer:

O(Oxygen)

Explanation:

2+2+4=8

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3 0
3 years ago
Can someone please help me
Alona [7]

Answer:

Potassium iodide increases the decomposition rate of hydrogen peroxide.

Explanation:

Potassium iodide increases the decomposition rate of hydrogen peroxide because potassium iodide act as a catalyst. A catalyst speed up the process of chemical reaction without reacting with the molecules present in reaction. If the potassium iodide is not present as a catalyst for the decomposition of hydrogen peroxide then the decomposition of hydrogen peroxide takes too much time because the catalyst is absent that speed up the reaction.

5 0
3 years ago
Which of the following are acids by the Bronsted-Lowry Definition:
olga55 [171]

ANSWER IS (A)

EXPLANATION:

Bronsted-Lowry concept states that a substance is an acid if it can act as a H+ donor.

HCl in aqueous solution means that HCl is present in water, HCl + H2O --> H3O+ + Cl-.  This reaction will take place, the H+ from HCl will be donated to H2O. So, HCl is a bronsted-lowry acid by definition.


However, Methanol (CH3OH) its written that it is liquid, i.e. pure methanol, CH3OH(l).  It is both acidic as well as basic. when it is mixed with water then it behaves as an acid.

The last one ammonia in gas phase is also neutral because its not in water. if mixed in water it behaves as a base.



6 0
3 years ago
Fove seconds without gravity would be detrimental to earth.<br>A.True<br>B.False​
anygoal [31]

Answer:true

Explanation:

6 0
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What are the intermolecular forces present in acetone?
notka56 [123]

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dipole-dipole interactions.

Explanation:

hope this helps

plz mark brainliest

3 0
2 years ago
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