2C6H14 + ______ O2 → 12CO2 + 14H2O What is the coefficient of O2 when the equation is completely balanced using the smallest whole-number coefficients?

Answers

Answer 1

Answer:

Answer:

The coefficient of O2 when the equation is completely balanced is 19

Explanation:

The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts

Left side: 6 carbon, 14 hydrogen and 2 oxygen.

Right side: 1 carbon, 2 hydrogen and 3 oxygen.

The coefficients of each molecule below indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction. So, in this case you can see that in the reaction there is:

Left side: 2*6=12 carbon, 2*14=28 hydrogen and COEFFICIENT OF OXYGEN*2=? oxygen.

Right side: 12*1=12 carbon, 14*2=28 hydrogen and 12*2+14*1=38 oxygen.

As mentioned, you must have the same amount of each element on both sides. In this case, carbon and hydrogen have the same amount on both sides, so it only remains to balance the oxygen. For that, you must calculate the "OXYGEN COEFFICIENT" on the left side of the equation so that there are 38 oxygen atoms, just like the right side. This is expressed as:

COEFFICIENT OF OXYGEN*2=38

From the previous expression you can obtain:

COEFFICIENT OF OXYGEN=19

So, the coefficient of O2 when the equation is completely balanced is 19

Answer 2

Answer: hello,
2C6H14+19O2⇒12CO2+14H2O

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A carbon-12 atom has a mass of 12.00000 amu. The mass of a proton is 1.00728 amu, and the mass of a neutron is 1.00866 amu. How many protons does the carbon-12 atom have? How many neutrons does the carbon-12 atom have? What is the mass defect of a carbon-12 atom? amu

Answers

A carbon - 12 atom and a regular carbon atom would have the same number of protons which is 6. So a carbon - 12 atom would have 6 protons. Both, however, would differ in the number of neutrons. Carbon - 12 atom has 6 neutrons. To determine the mass defect of a carbon - 12 atom, we have to add the total mass of protons and the total mass of neutrons and subtract the known mass of a carbon - 12 atom. That would be like this.
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12.09564 amu - 12.00000 amu = y
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So the defect mass would be 0.09564 amu.

1) The number of protons in an element defines its atomic number, and for carbon, it is 6. 2) Number of neutrons in a carbon-12 atom is 6. 3) The mass defect of a carbon-12 atom is 0.09564 amu.

To determine the number of protons and neutrons in a carbon-12 atom and the mass defect, we need to use the given atomic masses of a proton and a neutron.

Number of protons in a carbon-12 atom:

Carbon-12 is the most common isotope of carbon, and it contains 6 protons. The number of protons in an element defines its atomic number, and for carbon, it is 6.

Number of neutrons in a carbon-12 atom:

The mass number of an isotope will be the sum of protons as well as neutrons in its nucleus. For carbon-12, the mass number is 12 amu. Since we already know it has 6 protons, the number of neutrons can be calculated as follows:

Number of neutrons = Mass number-Number of protons

Number of neutrons = 12 amu-6 protons

Number of neutrons = 6 neutrons

Mass defect of a carbon-12 atom:

The mass defect is the difference between the actual mass of a nucleus and the sum of the masses of its individual protons and neutrons.

Mass defect = (Mass of protons + Mass of neutrons) - Actual mass of carbon-12

Mass of protons = 6 protons × 1.00728 amu/proton = 6.04368 amu

Mass of neutrons = 6 neutrons × 1.00866 amu/neutron = 6.05196 amu

Actual mass of carbon-12 = 12.00000 amu

Mass defect = (6.04368 amu + 6.05196 amu) - 12.00000 amu

Mass defect = 12.09564 amu - 12.00000 amu

Mass defect = 0.09564 amu

So, the mass defect of a carbon-12 atom is 0.09564 amu.

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MgF2 is a compound, i hope this helps people

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