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olga nikolaevna [1]
4 years ago
10

Given that 75 percent of Earth’s surface is covered with water, why is water considered a scarce resource

Chemistry
2 answers:
True [87]4 years ago
7 0

Answer: not all of the water is drinkable

Explanation: an alarmingly small percentage of the earth's water is fresh water the majority of the water on earth is salt water.

Molodets [167]4 years ago
3 0

Answer:

Not much of it we can use

Explanation:

3 percent of earth's surface water is fresh water and furthermore, 2.6 percent of this fresh water humans do not have access to.

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Please answer in order the squares are numbered
insens350 [35]

Answer:

1 , 2 , 3 , 4 , 5

Explanation:

4 0
3 years ago
Which is a characteristic of a Lewis base? it behaves as the electron donor. It behaves as the electron acceptor. It donates a h
Dmitry [639]

<em>Answer:</em>

  • It behaves as the electron donar. Its is correct one

<em>Definition of lewis base:</em>

  • Lewis base is a such a substance which donate pair of electron to Lewis acid.

<em>Example:</em>

                                       H3N +  BF3  ⇒   H3N---≥BF3

  • Ammonia is a lewis base while boron trifluride is lewis acid.

<em>Condition</em>

  • There should be lone pair of electron
  • Negative charged substances or anions
4 0
3 years ago
Read 2 more answers
A/1 * B/C = D
Anit [1.1K]

Answer: 0.64 Moles of Propane

Explanation:

Data:

        Moles of Carbon  =  1.5 mol

        Conversion factor  =  7 mol C produces = 3 mol of Propane

Solution:

            As we know,

               7 moles of Carbon produces =  3 moles of Propane

Then,

           1.5 moles of Carbon will produce  =  X moles of Propane

Solving for X,

                    X =  (1.5 moles × 3 moles) ÷ 7 moles

                    X  =  0.6428571 moles of Propane

Or rounded to two significant figures,

                    X =  0.64 Moles of Propane

Read more on Brainly.com - brainly.com/question/11464115#readmore

3 0
3 years ago
In an electrolytic cell, the electrode that acts as a source of electrons to the solution is called the __________; the chemical
Romashka [77]

In an electrolytic cell, the electrode that acts as a source of electrons to the solution is called the <u>cathode</u>; the chemical change that occurs at this electrode is called <u>reduction</u>.

<h3>Define Electrolyte:-</h3>

An electrolyte is a material that separates into charged ions when it is in contact with water. Cations are positively charged ions. Anions are ions that are negatively charged. A substance that may conduct an electric current when melted or dissolved in water is known as an electrolyte.

<h3>Electrochemical cell </h3>

There are three main categories of electrochemical cells. the galvanic cell, the concentration cell, and the electrolytic cell. These cells all share the same four fundamental components. These are the elements

  • The electrolyte serves as the conduit for current flow between the anode and the cathode. In an aqueous solution, it normally is homogeneous, but in moist soil, the concentration or kind of dissolved compounds may vary locally.
  • The anode, which can conduct electricity and is in contact with the electrolyte, corrodes when it combines with the chemicals in the electrolyte.
  • A metal also contacts the electrolyte at the cathode. It is protected from corrosion rather than corroded.
  • Anode and cathode are connected by the conductor, which also completes the circuit.

Learn more about Electrochemical cells here:-

brainly.com/question/25749323

#SPJ4

5 0
2 years ago
NF3 has three F atoms bonded to a central N atom, with one lone electron
Softa [21]

D Trigonal pyramidal

Explanation:

8 0
3 years ago
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