1 Tritium has a half-life of 12.5 years. If you start with 10 g, how much tritium would be left after 75 years?A) 0.725 g B) 0.313 g C) 0.255 g D) 0.156 g 2 Tritium has a half-life of 12.5 years. If you start with 15 g, how much tritium would be left after 50 years?A) 0.625 g B) 0.255 g C) 0.9375 g D) 0.725 g 3 Carbon-14 has a half-life of 5730 years. Starting with 150 g of carbon-14, how much would be left after 17,190 years?A) 25 g B) 18.75 g C) 17.25 g D) 12.5 g 4 Carbon-14 has a half-life of 5730 years. Starting with 200 g of carbon-14, how much would be left after 17,190 years?A) 18.75 g B) 17.25 g C) 25 g D) 12.5 g 5 Carbon-14 has a half-life of 5730 years. Starting with 250 g of carbon-14, how much would be left after 22,920 years?A) 17,625 g B) 12,225 g C) 15,625 g D) 14,255 g 6 Radon-222 has a half-life of 3.8 days. Starting with 60 g of radon-222, how much would be left after 38 days?A) 0.059 g B) 0.002 g C) 2.344 g D) 3.75 g 7 Radon-222 has a half-life of 3.8 days. Starting with 100 g of radon-222, how much would be left after 57 days?A) 2.344 g B) 0.002 g C) 3.75 g D) 0.059 g 8 Radon-222 has a half-life of 3.8 days. Starting with 75 g of radon-222, how much would be left after 19 days?A) 6.25 g B) 3.75 g C) 2.344 g D) 4.25 g 9 Iodine-13 has a half-life of 8 days. Starting with 60 g of radon-222, how much would be left after 32 days?A) 3.75 g B) 2.344 g C) 6.25 g D) 4.25 g 10 Iodine-13 has a half-life of 8 days. Starting with 50 g of radon-222, how much would be left after 24 days?A) 3.75 g B) 2.344 g C) 4.25 g D) 6.25 g