This Is Physical Science Which statements are true about this graph?

Select all correct answers.

Only temperature ​(°C)​ is the independent variable.

Only temperature ​(°C)​ is the dependent variable.

Only flow time ​(s)​ is the independent variable.

Both flow time ​(s)​ and temperature ​(°C)​ are dependent variables.

Only flow time ​(s)​ is the dependent variable.

answer: option (a) is the correct answer.

explanation:

the measurement of hydrogen ions in a solution is known as ph.

if ph of a solution is less than 7 then the solution is acidic. if ph of a solution is greater than 7 then the solution is basic.

when the ph of a solution equals 7, then the solution is considered as neutral.

the ph of pure water is 7, therefore, it means that concentration of hydronium ions equals that of hydroxide ions.