If calcium has the atomic number 20

mass number 40, both protons and neutrons are 20 would that make its electrons 18 or 22?

Cobalt 59 is a stable isotope and cobalt 60 is an unstable or radioactive isotope these two isotopes differ in the number of

Which phrase best to find a star system

What type of element is most abundant: metals, nonmetals, or metalloids

Which statement best describes a physical change

How many grams of iron are present in 150. g of the alloy

Why are electrolytes important in your body? Do you need to drink Gatorade to get them?

When balancing a chemical equation can you adjust the number that is subscripted to a substance formula?

What mass of aluminum is produced by the decomposition of 5.0 kg al2o3?

The smallest particle of a substance that still retains the properties of that substance

The reaction below demonstrates which characteristic of a base? Upper C U upper S upper O subscript 4 (a q) plus 2 upper N a upper O upper H (a q) right arrow upper C u (upper O upper H) subscript 2 (s) plus upper N a subscript 2 upper S upper O