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12345 [234]
3 years ago
14

Where is most of the water on earth found? What percentage?

Chemistry
1 answer:
bezimeni [28]3 years ago
8 0

Answer:

The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in glaciers and ice, below the ground, in rivers and lakes. Of the world's total water supply of about 332 million cubic miles of water, about 97 percent is found in the ocean.

wait..if you asking about the country it's Brazil✌️

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2. Which of the changes indicated are oxidations
sergeinik [125]

Answer:

A) Oxidized

B) Reduced

C) Oxidized

D) Oxidized

Explanation:

A) Cu becomes Cu²⁺

oxidation state increased from 0 to +2. It gets oxidize.

B) Sn⁺⁴ becomes Sn²⁺

oxidation state decreased from +4 to +2. It gets reduced.

C) Cr³⁺ becomes Cr⁺⁶

oxidation state increased from +3 to +6. It gets oxidize.

D) Ag becomes Ag⁺

oxidation state increased from 0 to +1. It gets oxidize.

Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

<em>Consider the following reactions. </em>

4KI + 2CuCl₂  →   2CuI  + I₂  + 4KCl

the oxidation state of copper is changed from +2 to +1 so copper get reduced.

CO + H₂O   →  CO₂ + H₂

the oxidation state of carbon is +2 on reactant  side and on product side it becomes  +4 so carbon get oxidized.

5 0
4 years ago
A chemical that will ignite spontaneously in air at a temperature of 130 degree fahrenheit (54.4 degree celsius) or below is ide
MrRissso [65]
Hello!

<span>A chemical that will ignite spontaneously in air at a temperature of 130 degree fahrenheit (54.4 degree celsius) or below is identified by the term pyrophoric. 

Pyrophoric 
substances are those that ignite spontaneously when in contact with air at 130 °F or below. Some substances that are pyrophoric include Iron Sulfur (FeS) or some metals like finely powdered Uranium. To handle pyrophoric substances, it is required to work in an inert atmosphere (i.e. an atmosphere without oxygen). 

Have a nice day!</span>
5 0
3 years ago
The reaction converting glycerol to glycerol-3-phosphate is energetically unfavorable by 9.2 kJ. The reaction of ATP with water
maw [93]

Answer:

ΔG for overall reaction :  -21.3 kJ

Explanation:

Reaction of the conversion of glycerol to glycerol-3-phosphate is unfavorable and thus is coupled with second reaction that involves the conversion of ATP to ADP which is highly energetically favorable.

Reaction 1:  Glycerol + HPO₄²⁻ ⇒ Glycerol-3-phosphate + water

Reaction 2:             ATP  + H₂O ⇒ ADP + HPO₄²⁻ + H⁺

ΔG for reaction 1 : 9.2 kJ (non-spontaneous : Positive value)

ΔG for reaction 2 : -30.5 kJ (spontaneous : Negative value)

The overall coupled reaction is:

<u>Glycerol + ATP ⇒ Glycerol-3-phosphate + ADP + H⁺</u>

<u>ΔG for overall reaction : 9.2 kJ + (-30.5 kJ) = -21.3 kJ</u>

negative sign signifies that the overall reaction is spontaneous.

5 0
4 years ago
Which of the following elements would be the least likely to form a cation if involved in a chemical reaction?
quester [9]
Cation means postive charged
answer is potassium.
being +1
6 0
3 years ago
Read 2 more answers
Based on the six given solvents, which of the following answers lists ALL of the solvents that are NOT suitable for liquid-liqui
Zina [86]

Answer:

I don't know the answer sorry

6 0
3 years ago
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