What percentage of the total atomic mass of carbon monoxide (CO) is composed of carbon? 73% 29% 43% 57%

To determine the percentage of the total atomic mass of carbon monoxide (CO) that is composed of carbon, we need to know the atomic masses of carbon (C) and oxygen (O).The atomic mass of carbon (C) is approximately 12.01 amu.The atomic mass of oxygen (O) is approximately 16.00 amu.The molecular mass of carbon monoxide (CO) is the sum of the atomic masses of carbon and oxygen: Next, we calculate the percentage of the total atomic mass of CO that is due to carbon: Therefore, the closest answer from the given options is: So, the percentage of the total atomic mass of carbon monoxide (CO) that is composed of carbon is approximately 43%.