Mass number = protons + neutrons
mass number = 5 + 7
mass number = 12
Answer:
the input force would be 75 N
Explanation:
if the output force is 150 N you divide that in half which leaves with 75 N !! :)
if 105 grams burns completely
therefore
105 ×22.4/48=49
They don't change what the substance really is unlike chemical change. They chemical formula of the substance stays the same even though the substance can go under shape change.
