1. what is the difference between mass of an object and its
d its volume?

Mass is the measure of how much an object contain the matter.

Volume is the measure of how much an object cover the space.

Explanation:

Mass:

Mass is the measure of how much an object contain the matter.

It is a physical quantity.

It is a persistent quantity.

It is measure in gram, kilogram units.

Volume:

It is the measure of how much an object cover the space.

It is a geometric value.

It is change according to the state of matter.

It is measure in litter, milliliter in case of liquid while it is presented in cm³, m³ in case of solid.

Example:

A bowling ball and basketball can have same volume but mass of bowling ball is greater than basketball.

the role of the microscope world in creating new materials .

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.