After the 4th half life how much of the sample is left if the mass is 100g.

Step-by-step explanation:

After every Half life , Half of the mass is left.

After 1st Half life = 100 g / 2 = 50 g

After 2nd Half life = 50 / 2 = 25 g

After 3rd Half life = 25 / 2 = 12.5 g

After 4th Half life = 12.5 / 2 = 6.25 g

Hope this helped!

hi,

3. 12.15, you are correct.

4.2.01, your first digit is correct,

hope this !