Questions: What is the mass % of each element in the structure below? Make sure to use the full atomic mass provided in the ALEKS Periodic Table in your calculations. Round each of your answers to 4 significant figures. Part 1 of 4 % C Part 2 of 4 % H

What is the mass % of each element in the structure below? Make sure to use the full atomic mass provided in the ALEKS Periodic Table in your calculations. Round each of your answers to 4 significant figures.

Part 1 of 4
% C

Part 2 of 4
% H

Transcript text: What is the mass \% of each element in the structure below? Make sure to use the full atomic mass provided in the ALEKS Periodic Table in your calculations. Round each of your answers to 4 significant figures. Part 1 of 4 $\square$ \% C Part 2 of 4 $\square$ \% H

Solution

Solution Steps

Step 1: Count the atoms

Count the number of each type of atom in the molecule:

C: 8
H: 10
N: 1
O: 1

Step 2: Calculate the molar mass

Using the ALEKS Periodic Table, find the atomic masses:

C: 12.011 g/mol
H: 1.0079 g/mol
N: 14.007 g/mol
O: 15.999 g/mol

Calculate the total molar mass of the molecule:

(8 * 12.011) + (10 * 1.0079) + (1 * 14.007) + (1 * 15.999) = 150.176 g/mol

Step 3: Calculate the mass percentage of each element

Mass % of an element = (total mass of the element / total molar mass of the molecule) * 100%

% C: (8 * 12.011 / 150.176) * 100% = 63.99%
% H: (10 * 1.0079 / 150.176) * 100% = 6.712%

Final Answer

63.99 % C
6.712 % H

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