What is the pH of pure HNO3 (nitric acid)?

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

How many miles of water are produced if 5.43 mol pbo2 are consumed

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: