Carbon-14 is a radioisotope with a half-life of 5730 years. If you start with 4 g of Carbon-14, how many grams will remain after 40,110 years? How many half-lives will have passed?

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

What is the mass of oxygen gas is consumed in a reaction that produces 4.60mol so2