A helium balloon is used to bring a weather satellite up into the higher atmosphere. In the upper atmosphere, the balloon will be at 7,000 mL at a pressure of 60 kPa and a temperature of -40 °C. What
volume would the balloon need to be filled on the ground where the pressure is 1 atm and 25°C?
5,300 mL
O 537,000 mL
-262,500 mL
-2590 mL

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.