Question

In the lab, a chemist analyzed a sample of methanol and found that it was made of 6.2 g of carbon, 4.1 g of hydrogen, and 15.9 g of oxygen. What is the percent composition of CARBON? Provide your answer to two places past the decimal point.

Answer 1

The percent composition of carbon in the methanol sample can be calculated by dividing the mass of carbon (6.2 g) by the total mass of the sample (26.2 g) and multiplying by 100, resulting in 23.66%.

Step-by-step explanation:

To determine the percent composition of carbon in methanol for the given sample, you first need to find the total mass of the sample, which is the sum of the masses of carbon, hydrogen, and oxygen.

Next, you calculate the percent composition of carbon by dividing the mass of carbon by the total mass of the sample and then multiplying by 100 to get a percentage.

The total mass of the methanol sample is 6.2 g (C) + 4.1 g (H) + 15.9 g (O) = 26.2 g. Therefore, the percent composition of carbon is (6.2 g C / 26.2 g sample) × 100 = 23.66%.

Answer 2

To calculate the percent composition of carbon in methanol, divide the mass of carbon in the sample by the total mass of the sample and multiply by 100%. The percent composition of carbon in methanol is approximately 23.66%.

Step-by-step explanation:

To calculate the percent composition of carbon in methanol, we need to determine the mass of carbon in the compound and divide it by the total mass of the compound. Given that the mass of carbon in the sample is 6.2 g and the total mass of the sample is 26.2 g (6.2 g carbon + 4.1 g hydrogen + 15.9 g oxygen), we can calculate the percent composition as follows:

Percent composition of carbon = (mass of carbon / total mass of sample) × 100% = (6.2 g / 26.2 g) × 100% = 23.66%

Therefore, the percent composition of carbon in methanol is approximately 23.66%.