You have a mixture that contains 10 g of Mo-93 with a half-life of
3.5 x 103
years and 10 g of
Ca-47 with a half-life of 4.5 days. Estimate how much time must elapse before the quantity of radioactive material is
reduced by 50% by mass.

Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough