Asmall amount of americium-241 is used in smoke detectors. a stream of radiation flows between two electrodes. if smoke interrupts the stream, the alarm goes off. what feature of the radioisotope americium-241 would be most for the smoke detector to work? long half-life short half-life over-sensitive detection less sensitive detection

How many moles in .5g of sodium bromide?

4. glenn andrews recently bought a motorcycle for $3,950. if he had to pay 6% sales tax on the bike, what was the total cost of the motorcycle?

Why is it important for scientists to review and repeat the work of other scientists? 1.a scientific theory must be tested three times before it is proven. 2.the scientific method only applies to repeated experiments. 3.an experiment may have had errors that the scientists didn't recognize. 4.the results of individual scientists may be influenced by bias. 5.an experiment must be performed twice before the data can be analyzed.