Please answer the following. No need for detailed solutions. Need it asap. Thank you.

Question 10 1 pts A substance decomposes. in air at the rate proportional to the amount present. If initiallyr there are 50 grams and after 20 years 0.6% decomposed. What is the amount remaining after EDGE} years? 0 253.12 grams C: 2139 grams 0 28.42 grams 0 30.21 grams Question 9 1 pts A metal is heated up to a temperature of 450 It is then exposed to a temperature of 36C. After one minute the temperature of the metal becomes 180 C. What is the temperature after 2 minutes? 86 degrees C O 89 degrees C O 76 degrees C 92 degrees C