Which conclusion can be made about isotopes? (1 point) O Isotopes that are naturally occurring and unstable always exist in trace amounts

o Isotopes with more neutrons than protons are always unstable.

O Isotopes with the same number of neutrons as protons are always the most abundant.

O Isotopes that are naturally occurring in nature are always unstable

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.

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

What is true for a substance that releases energy