Explain different between subscripts and coefficients

What is the formula for hydrogen-hydrogen?

What are two properties that make a metal a good choice to use as a wire in electronics? a) conductivity, malleability b) ductility, conductivity c) luster, malleability d) malleability, high density

Analysis of a 10.15 g sample of a compound known to contain only phosphorus and oxygen indicates a phosphorus content of 4.433 g. What is the empirical formula of this compound

Most street lights are made from one of two elements-mercury or sodium. Explain why astronomers prefer that cities use sodium street lights instead of mercury street lights.

How many grams of nickel are in 1.57 moles of nickel

When metals react with nonmetals, an ionic compound generally results. what is the predicted general formula?

Why could the Bohr model not predict line spectra for atoms other than hydrogen?

Cryolite, Na3AlF6 (s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. Balance the equation. 1.) Balance the equation - AlO3 (s) + NaOH (l) + HF (g) - ->Na3AlF6+H2O (g) 2.) If 17.5 kilograms of Al2O3 (s), 51.

The volume, in liters, of 538 g of CO2

What are two types of cold air masses that influence the weather in North America? Name them and describe their humidity.