1. This question is about copper(ll) sulfate solution, which contains Cu2+(aq) and SO, 2-(aq) ions. a) The presence of the sulfate ions can be shown by adding dilute hydrochloric acid and barium chloride solution to produce a white precipitate.

(i) Name the white precipitate.
(ii) Write the ionic equation for its formation.

the answer to your question is c.

if you read the house of usher you should know that the house was haunted

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest