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NikAS [45]
3 years ago
5

Which of the following molecules has a polar covalent bond?

Chemistry
1 answer:
maks197457 [2]3 years ago
5 0
<h2>Hii..</h2>

<h3><u><em>C</em><em>o</em><em>r</em><em>r</em><em>e</em><em>c</em><em>t</em><em> </em><em>option</em></u><em> </em><em>:</em><em> </em><em>[</em><em>C</em><em>.</em><em>]</em><em> </em><em>Bromine</em><em> </em><em>gas</em><em> </em><em>(</em><em>Br2</em><em>)</em></h3>

<h2><em>Have</em><em> </em><em>a</em><em> </em><em>nice</em><em> </em><em>time</em><em>.</em><em>.</em><em>.</em><em> </em><em>:</em><em>)</em><em> </em><em> </em><em> </em><em> </em><em> </em></h2>

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What are the Kelvin and Celsius temperature scales based on?.
mart [117]

Answer:

The Celsius scale sets the freezing point and boiling point of water at 0°C and 100°C respectively. The Kelvin scale is based on molecular motion, with the temperature of 0 K, also known as absolute zero, being the point where all molecular motion ceases.

Explanation:

7 0
2 years ago
The mineral rhodochrosite [manganese(II) carbonate, MnCO3] is a commercially important source of manganese. Write a half-reactio
aleksklad [387]

Answer:

MnCO3 + 2H2O ⇄ MnO2  + HCO3-  + 2e- +3H+

Explanation:

<u>The</u> unbalanced equation

MnCO3 ⇄ MnO2  + HCO3-

In MnCO3, the oxidation number of Mn is +2

In Mno2, the oxidation number of Mn is +4

The change from +2 to +4 requires an addition of  2 electrons (to the right side).

MnCO3 ⇄ MnO2  + HCO3-  + 2e-

The total charge now is -3 on the right side. To balance this we add 3 hydrogen atoms on the right side.

MnCO3 ⇄ MnO2  + HCO3-  + 2e- +3H+

On the right side we have 4 hydrogen atoms in total. On the left side we have 0 hydrogen atoms. So to balance, we have to add 2H2O on the left side

MnCO3 + 2H2O ⇄ MnO2  + HCO3-  + 2e- +3H+

Now the reaction is balanced.

5 0
3 years ago
Would your results be he same if 1.5 g of barium chloride was used instead of 1.3 g? same with 0.7 g of barium chloride?
pickupchik [31]
For a chemical reaction, the results would be the same with different amounts of barium chloride present if barium chloride is not the limiting reactant of the reaction. The limiting reactant is the substance that is totally consumed when the reaction proceeds to completion. In other words, it dictates the amount of products that will be produced. Otherwise, if barium chloride is the limiting reactant, the amount of barium chloride present would definitely affect the results.  
6 0
3 years ago
What is the velocity of a 485 kg elevator that has 5900 J of energy?
Ganezh [65]

The velocity of a 485 kg elevator that has 5900 J of energy is 108.6 m/s

<h3>What is the velocity of the elevator?</h3>

A moving elevator possesses kinetic energy due to its motion.

The velocity of the elevator is calculated from the formula of kinetic energy.

The kinetic energy formula is : Kinetic energy = ¹/₂mv₂

The velocity, v = √2KE/m

v = √(2 * 5900/485)

v = 108.6 m/s

In conclusion, the velocity of the elevator is calculated from the kinetic energy and mass of the elevator.

Learn more about velocity and kinetic energy at: brainly.com/question/25959744

#SPJ1

7 0
2 years ago
Determine the number of protons, neutrons, and electrons in the following:
Finger [1]

The ⁴⁰₁₈X is the symbol for ⁴⁰₁₈Ar - atom and it has 18 protons, 18 electrons, and 22 neutrons.

<h3>What is Mass number ?</h3>

Mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom.

In the given element,  ⁴⁰₁₈X,  Subscript 18 is the number of proton and is also equal to the number of electron. While supercript 40 is the atomic mass.

The number of neutrons is given by subtracting the proton number from the mass number.

Therefore,

Number of Neutron = Mass Number - Atomic Number

                                 = 40 - 18

                                 = 22 Neutrons

Learn more about Mass number here ;

brainly.com/question/18803094

#SPJ1

8 0
2 years ago
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