If the curries were able to extract 8.5ug of radium from 8.5 tons of pitchblende, what was their rate of recovery? (in percent please)
To calculate the rate of recovery, you need to compare the amount of radium extracted to the amount present initially.
In this case, they were able to extract 8.5 micrograms (ug) of radium from 8.5 tons of pitchblende. To find the rate of recovery in percentage, follow these steps:
Step 1: Convert tons to micrograms.
1 ton = 1,000,000,000 micrograms (ug)
So, 8.5 tons = 8,500,000,000 micrograms (ug)
Step 2: Calculate the rate of recovery.
Rate of recovery = (Amount of radium extracted / Amount of radium initially present) x 100
In this case, the amount of radium initially present is the same as the amount in pitchblende, which is 8,500,000,000 micrograms (ug). The amount of radium extracted is 8.5 micrograms (ug).
Rate of recovery = (8.5 ug / 8,500,000,000 ug) x 100
Calculating this expression, we find:
Rate of recovery = (8.5 / 8,500,000,000) x 100
The rate of recovery is approximately 0.0000001%.