2. If the half-life of Francium-233 is 22 minutes, how much time must elapse in order for 60 grams of a 64 gram sample to undergo decay? In other words, after how many minutes will you only have 4 grams of the original isotope
remaining?

88 minutes

Explanation:

64 g  ---> 32g  ---> 16g  ---> 8 g ---> 4 g

So in total, we have 4 half lives to reach 4.0 g

therefore, 4 x 22 minutes = 88 minutes

explanation:

i think option no d is the correct answer

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.