You wont hear the sound from it because the sound is caused by vibrating the air molecules. this wont make a sound because the vibrations don't have a medium to travel through.
the ph is gonna be your value and the 4 is gonna be your main subject
so as the ph is your value u gonna ad your ph and 7 and 4 toghter then multiple your answer 2 times because ph represent multiple and your value
Greenhouse gases are more efficient at absorbing thermal energy and re-radiating it than the other atmospheric gases.
When sulfur reacts with magnesium it forms magnesium sulfide,he chage on the sulfur atom in magnesium sulfide is -2
