Question

hey friends plz answer it with clear explanation..... ​

Answer 1

Answer:

I have solved the whole problem in the photo, please see it, please check the answer in the book.

Explanation:

you need to form the required 3quations and solve them.

Hope you will be able to understand

Answer 2

Explanation:

Chemical reactions must be distinguished from physical changes. Physical changes include changes of state, such as ice melting to water and water evaporating to vapour. If a physical change occurs, the physical properties of a substance will change, but its chemical identity will remain the same. No matter what its physical state, water (H2O) is the same compound, with each molecule composed of two atoms of hydrogen and one atom of oxygen. However, if water, as ice, liquid, or vapour, encounters sodium metal (Na), the atoms will be redistributed to give the new substances molecular hydrogen (H2) and sodium hydroxide (NaOH). By this, we know that a chemical change or reaction has occurred.