As long as the chemical is not used up in the reaction the answer is true
Low density, high tensile strength. Wheelchairs and tennis racquets are better when lightweight, without detracting from their quality (strength).
We want to take inventory of the right and left side
Right: S=1 O = 2 Li = 2 Se= 1
Left: S= 1 Se=2 Li= 2 O=1
Lets balance out each side because we see we are off by 1 oxygen on the left
Add a coefficient of 2 on the Li2O
Add a coefficient of 2 on the right Li2Se
Now we have So2+ 2Li2Se ---> SSe2+ 2Li2O
or
The equation is already balanced, assuming that there is supposed to be a yields symbol between 2Li2Se and SSe2.
To find out whether or not this equation is balanced, make a little T-chart with the left side of the equation on one side and the left on the other. Next to each element, write down the amount they start off with and make changes as you add coefficients.
Hope this helps!
The percentages of carbon and hydrogen 84.37% and 15.693% respectively.
<h3>What is a molar mass ?</h3>
The mass of a certain chemical element or chemical compound (g) divided by the amount of material is known as the molar mass (mol). By multiplying the standard atomic masses (in g/mol) of the component atoms, one may get the molar mass of a compound.
Molar mass of the compound is the mass of 1 mole of compound which is the sum of masses of each element.
![C_9H_{20.](https://tex.z-dn.net/?f=C_9H_%7B20.)
Mass of 1 mole of compound= mass of carbon + mass of hydrogen+ = 9(12) + 20(1)= 128 g.
Percentage by mass of carbon =
%
= 108/128 * 100
= 84.37 %
Percentage by mass of carbon =
%
=20/128 *100 =15.63 %
The percentages of carbon and hydrogen 84.37% and 15.693% respectively.
To learn more about Molar mass refer,
brainly.com/question/837939
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