The half-life of carbon-14 is 5730 years. Dating organic material by looking for C-14 can't be accurately done after 50000years. Suppose a fossilized tree branch originally contained 4.30grams of C-14. How much C-14 would be left after 50000 years

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)