How many atoms of oxygen are in 8.43 g of magnesium sulfate heptahydrate (Epsom salts) ? How many atoms of oxygen are in 8.43 g of magnesium sulfate heptahydrate (Epsom salts) ?

Four elements make up about 96% of the mass of the human body. which are those four elements? (choose all that apply.) four elements

Many scientist compare the parts of a cell to the parts of a factory. Do you think this comparison is fair and useful? Explain

Why do people describe water as a universal solvent

Elements in group 2 are all called alkaline earth metals. What is most similar about the alkaline earth metals?

What elements can the compound ca (no3) 2 be decomposed into?

Explain why the sand on a beach cools down at night more quickly than the ocean water.

12) _Na + _H2O → ___ NaOH + __H2

Match the mineral categories to their best descriptions. a. sulfide mineralsminerals that have a sulfur atom surrounded by four oxygen atomsb. sulfate mineralstable salt is an example of this type of mineralc.

A covalent bond is best described as Question 1 options: the sharing of electrons between atoms. the transfer of electrons. a bond between a metal and a nonmetal. a bond between a metal and a polyatomic ion.

If you have 100 grams of H2, how many moles of H2 is that?