is the quantity of a substance in a mixture per unit volume of the mixture???

Answer: Amount of substance

Question: when did the first mustang fastback come out?

Answer: August 1964

Answer this question: where does the mousse derive its light texture from??

air bubbles

Q: who won wicked tuna outer banks season 4?A: Reels of Fortune

Input: who owns the los angeles rams football team?

Output: Enos Stanley Kroenke

input: What is the answer to this question? when did prokaryotic cells first appear on earth?

output:
approximately 3.5 billion years ago