Hydrogen is found primarily as two isotopes in nature. 1 1H (1.0078 u) and 2

1H (2.0148 u). Calculate the
percentage abundance of each isotope based on hydrogen’s average atomic mass.

Apush or pull that moves or changes and object when to objects touch

What happens in the particles of a gas when the gas is compressed

Why is any chemical reaction always balanced? give reasons and explain the easiest way to solve the balancing problems in chemical equations with stoichiometric coefficients upto 20 as hit and trial doesn't always work. give full reasoning