about 99% of the mass of the human body is made up of just six elements.
oxygen:65%
carbon18%
hydrogen:10%
calcium:1.5%
phosphorus:1.0%
Find the mass of each element in a human body iwth mass 60kg.
could you please explain to me how to do this? your help is appreciated.:)
60 kg. * 0.99 =59.4 kg
0.65 * 59.4 = 38.61 kg
0.18 * 59.4 = 10.69 kg
I'm sure you can finish the rest of these calculations.
Sure! To find the mass of each element in a 60 kg human body, we can start by calculating the mass of each element based on their respective percentages.
Step 1: Convert the percentages to decimals
Divide each percentage by 100 to convert them to decimal form:
- Oxygen: 65% = 0.65
- Carbon: 18% = 0.18
- Hydrogen: 10% = 0.10
- Calcium: 1.5% = 0.015
- Phosphorus: 1.0% = 0.01
Step 2: Calculate the mass of each element
Multiply the decimal values by the total mass of the human body (60 kg) to find the mass of each element:
- Oxygen: 0.65 * 60 kg = 39 kg
- Carbon: 0.18 * 60 kg = 10.8 kg
- Hydrogen: 0.10 * 60 kg = 6 kg
- Calcium: 0.015 * 60 kg = 0.9 kg
- Phosphorus: 0.01 * 60 kg = 0.6 kg
Therefore, in a 60 kg human body:
- Oxygen mass = 39 kg
- Carbon mass = 10.8 kg
- Hydrogen mass = 6 kg
- Calcium mass = 0.9 kg
- Phosphorus mass = 0.6 kg
Please note that these calculations are approximate and represent the average composition of a human body.