Which one of the following is not in its most stable form at 25°C and 1 atm pressure?

Gallium (Ga) consists of two naturally occurring isotopes, 69Ga and 71Ga with masses of 68.926 and 70.925 amu respectively. The average atomic mass of Ga is 69.72 amu. Calculate the percentage abundance of each isotope.

A sample of the inert gas krypton has its pressure tripled while its temperature remained constant. If the original volume is 12 L, what is the final volume?

How many molecules of molecular oxygen react with four molecules of NH3 to form four molecules of nitrogen monoxide and six molecules of water?

Which one of the following oxides does not react with water to form acid solutions?

The appropriate number of significant figures in the result of 15.234 – 15.208 is

Please select the word Red

Please select the letter A

Please select the word dog

Please select the word cat