Question

If a sample is 0.5g but has an impurity of 70% what is the real mass of the sample(pure)?​

Answer 1

0.15

Step-by-step explanation:

0.5 is100% of the total mass if 70% is impure .find the mass of 70%

which is 0.35g take 0.5 -0.35 =0.15

0.15 is the mass of the pure sample