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

In a copper wire, a temperature increase is the result of which of the following

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

What mass of glucose is produced when 54g of water react with carbon dioxide