3rd one sorry if it’s wrong
Its c ok im sorry if i got the last answer wrong
Answer:
density equals weigt divided by volume
Explanation:

Answer:
P1V1/T1= P2V2/T2
Explanation:
Combined gas law involves Boyle's law and Charles law altogether with the formula of Boyle's law as P1V1=P2V2
formula for charles law as V1/T1=V2/T2
so when combined form P1V1/T1=P2V2/T2
Answer:
d is the answer of this question