Answer:
4... hope this will help
Step-by-step explanation:
Answer:
40°, 140°, and 140°
Step-by-step explanation:
Answer:
C). 0.39 grams
Step-by-step explanation:
First find how many half-lifes are in 3 hours:
3 hours ÷ 20 minutes = 9 half-lifes
Find the total left:
0.5^9*200 ≈ 0.39
Answer:
ok thx
Step-by-step explanation: