The accurate relative isotopic masses and relative abundances of the isotopes in a sample of bromine are shown below.
Isotope
79Br
81BT
Relative isotopic mass
78.9183361
80.9162896
Relative abundance (%)
50.69
49.31
i.
What is the relative atomic mass of bromine in this sample?
Give your answer to three decimal places.

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

What happens to isotopes that are unstable?

Akno3 solution containing 51 g of kno3 per 100.0 g of water is cooled from 40 ∘c to 0 ∘c. what will happen during cooling?