Answer:
The temperature at which the given substance starts to boil is called boiling point.
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The molar mass of carbon (C) is 12.0107 u.
It's actually C because the rock cooled fast
The correct answer is 12.2% BaO.
The solution is found by dividing the mass of the BaO, which is 25.8 grams, by the total mass of the solution, which is 212 grams, then multiplying it by 100 to get the percentage:
They are examples of physical<span> contaminants .</span>