How do I convert 1 times 10 to the 20th power seconds to years. Dimensional analysis? 1x10^20 seconds to years

To convert a second measurement to a year measurement, divide the time by the conversion ratio.

Since one year is equal to 31,556,952 seconds, you can use this simple formula to convert:

years = seconds ÷ 31,556,952

1 ×10^20 sec to years = 3.16887646 × 10^12 years

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