4. A 400-L cylinders of oxygen gas is compressed to 15000 kPa. If this pressure is increased to 30000 kPa, what volume of oxygen can a cylinder supply at this pressure?​

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.

let that person have a turn to speak : )

you need to have a picture of the atom that way we can answer it