What is true of an aqueous solution that is 15.0 percent hno3 by mass?
a. it contains 15.0 grams of hno3 per 1.0 liter of water.
b. it contains 15.0 grams of hno3 per 100 grams of solution.
c. it contains 15.0 moles of hno3 per 100 moles of water.
d. it contains 15.0 moles of hno3 per 1.0 liter of solution.

B. It contains 15.0 grams of HNO₃ per 100 grams of solution.

Explanation:

So, an aqueous solution that is 15.0 percent HNO₃ by mass means that It contains 15.0 grams of HNO₃ per 100 grams of solution.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.