Which of the following measurements has three significant figures?
01.02 x 10-3 g
o 0.089 g
100 g
o 7.8 x 10-6g

01.02 × 10⁻³g has 3 significant figures.

Explanation:

01.02 × 10⁻³g has 3 significant figures because all non-zero figures are significant, all zeros in between numbers are significant, and all zeros before or after (unless there is a decimal point before) are not significant.

i had this on my unit activity, i can you if you are a plato student. are you a plato student?

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