A 0.010 M aqueous solution of a weak acid HA has a pH of 4.0. What is the degree of ionization of HA in the solution? a. 1%
b. 0.001%
c. 0.1%
d. 10%
e. 0.01%

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

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.

catya that's not even a b or c