Xenon-133 is used to test lung function; it decays by emitting a beta particle. a. write an equation for the beta decay of xe-133. b. if the half-life of xe-133 is 5.2 h, how much of a 20.-mci sample is still active after 15.6 h?

your answer would be a. 12.5 kg

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

11 players on a field that has a maximum of 11 players

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