Aseton memiliki volume 0.5 liter pada suhu 20 derajat celcius, kemudian dipanaskan hingga suhu 40 derajat celcius. tentukan perubahan volume aseton

I translated it so I could help, but please try putting the question in English.

You are supposed to use charles' law here. V1/T1 = V2/T2. Temps should be converted to kelvin, so K = C + 273. You are finding V2, so solving for V2 makes it V1*T2/T1 = 0.5 * 313/293 = 0.534 liters

Question was not very clear if there are specific answer choices tell me and i'll try to you more. hope this though2 laps is 1 min. we know that for each min she does two times the amount of laps. for 12 laps we can do 12/2 which does give us 12 laps in 6 mins not 16 mins.