The half-life of bismuth is 5 days. how much of a 100 gram sample will remain after 20 days? a. 50 grams b. 12.5 grams c. 6.25 grams d. 0 grams

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next