5.0 liters of a 0.1 M Ca(OH), solution

0.5mol

Explanation:

mole = concentration × volume

mole = 0.1 × 5.0 = 0.5mol

the correct answer is answer a. a mixture

no other options make sense

hope this

have a great day : )

  - sprinkles

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