How many protons and electrons does an osmium atom have? a niobium atom?

How many chlorine ions are required to bond with one aluminum ion and why?

A 0.784 g sample of magnesium is added to a 250 ml flask and dissolved in 150 ml of water. magnesium hydroxide obtained from the reaction required 215.0 ml of 0.300 m hydrochloric acid to completely react. how many moles of hcl were used?

Witch element is used in ''paint'' the skin to prevent infection from cuts and scratches

What is the substance called that is being dissolved in a solution? concentrator solute mixture solvent What is the substance called that dissolves the other substance in a solution? mixture solvent solute concentrator

Now molecules: molecules of H2 + molecules of O2 → molecules of H2O

Which microscope came out first

Which exerts greater pressure on the floor-standing flat-footed or standing on tiptoe? on tiptoe, because the force acts over less area on tiptoe, because the force acts over more area flat-footed, because the force acts over more area flat-footed,

1. Sara tells Michael she is 160 centimeters tall, while Michael says he is 60 inches tall. If there are 2.54 centimeters in an inch, who is taller

How do you tell if a compound is polar or non polar

What two ions are central to the arrhenius definitions of acids and bases?