.Americium- 241 is widely used in smoke detectors. The radiation released by this element ionizes particles that are then detected by a charged particle collector. The half-life of Am-241 is 432.2 years, and it decays by emitting alpha particles. How many alpha particles are emitted each second by a 5.00 g sample of Am-241?

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost