For these problems, use the formula Final mass x 2^H = Original mass, where H= # of half lives

4. If carbon-11 has a half life of 20 minutes, how long would it take for 1000g to decompose down to 31g?

5. If 40g of Rhodium-101 decompose down to 5g in 9 years, what is the half life of Rhodium-101?

6. Einsteinium-255 has a half-life of 40 days. What was the starting mass if there are 15g left after 200 days?

Aforce of attraction/repulsion due to the spin of electrons what is this force?

You have a sample of a gas that occupies a volume of 17ml at -111 degrees celsius. what volume does the sample occupy at 88 degrees celsius? show all work asap

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant