Answer:
I'm glad you asked!
Explanation:
The answer is the first one.Pure substances are substances that are mixed together.The picture shows that they are pure substances.Pure substances are always combined.So that makes it the first one.
Answer:
1. HNO3
2. HNO2
Explanation:
Nitrogen acid may refer to any of:
1. Nitric acid, HNO3 or
2. Nitrous acid, HNO2
Acid rain is caused by a chemical reaction that begins when compound like nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain. nitrogen oxides dissolve very easily in water and can be carried very far by the wind. As a result, the compounds can travel long distances where they become part of the rain, sleet, snow, and fog as acids.
Equation of reaction:
NO2 + H2O ==> HNO3
NO + H2O ==> HNO2
