Where is gold found naturally​

Gold is widespread in low concentrations in all igneous rocks. Its abundance in Earth's crust is estimated at about 0.005 part per million. It occurs mostly in the native state, remaining chemically uncombined except with tellurium, selenium, and bismuth. The element's only naturally occurring isotope is gold-197.

Explanation:

South Africa, the USA (Nevada, Alaska), Russia, Australia and Canada.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.