Dexter weighs 50 kg. his body contains 30.8 kg of oxygen and 4.9 kg of hydrogen. the rest is made up of other elements. how many kilograms of other elements are in Dexter's body?

Answer 1

To find the mass of the other elements in Dexter's body, we can subtract the mass of oxygen and hydrogen from his total weight.

1. Total weight of Dexter: 50 kg
2. Mass of oxygen: 30.8 kg
3. Mass of hydrogen: 4.9 kg

Now, we can calculate the mass of other elements:

\[ \text{Mass of other elements} = \text{Total weight} - (\text{Mass of oxygen} + \text{Mass of hydrogen}) \] \[ \text{Mass of other elements} = 50 \text{ kg} - (30.8 \text{ kg} + 4.9 \text{ kg}) \] \[ \text{Mass of other elements} = 50 \text{ kg} - 35.7 \text{ kg} \] \[ \text{Mass of other elements} = 14.3 \text{ kg} \]

So, Dexter's body contains 14.3 kg of other elements.