C-14 has a half-life of 5730 years. Suppose you start with 80 grams of C-14. How long will it take until you are left with 40 grams of C-14? 5730 years

11,460 years

2865 years

17190 years

What is the maximum number of electrons that an atomic orbital can contain?

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11