The answer is: <span>B) The phosphoric acid in cola easily removes dirt and grime.
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Cola is a drink containing phosphoric acid in its complex composition. Acidic properties of Cola allow her to remove rust, dirt, and grime from chrome surface. In the same time, it is a very diluted solution of phosphoric acid which is very important not to damage a metal.
PH3
Also known as phosphine
Nope, it's a physical change. When ice melts it changes into liquid water, it's still water. Changes in which no new substances are formed are physical changes, hence this is a physical change.
The correct answer to your question is noble gases are stable <span>due to having the maximum number of valence electrons their outer shell can hold. Meaning their outer shells are stable.
Hope this helps let me know!</span>
