James has opened the valve on the propane tank for his BBQ grill. He later notices how cold the top of the tank feels. What is the reason for this? A) The liquid inside is condensing; losing energy to overcome the interactions holding them together

B) The liquid inside is vaporizing; losing energy to overcome the interactions holding them together.

C) The liquid inside is vaporizing; gaining energy to overcome the interactions holding them together.

D) The liquid inside is freezing; gaining energy to overcome the interactions holding them together

Which element is the least metallic between cadmium, silver, zinc, or iron?

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.