What are metals and non metals in a backpack

what Moves oxygen from the outside into the body and removes carbon dioxide from the body a. respiratory system b. gas exchange c. breathing

A sample of a compound contains only the elements sodium, sulfur, and oxygen. it is found by analysis to contain 0.979 g na, 1.365 g s, and 1.021 g o. determine its empirical formula.

The rare earth elements include A. the lanthanide series and the alkali metals. B. the alkali metals and the transition metals. C. the actinide series and the alkaline earth metals. D. the lanthanide series and the actinide series

Compound p undergoes a substitution reaction with chlorine state a condition a condition required for this reaction to occur

What is the correct description of the components of an ATP molecule?

Which element would you expect to be more metallic? (a) S or Cl (b) In or Al (c) As or Br

Determine how many protons, neutrons, and electrons are in a bromine atom that has a mass number of 73

Describe the forces both attractive and repulsive that occur as two atoms move closer together.

What is cement used for

Why did one liter of nitrogen prepared by lord rayleigh appear to have a greater mass than the other liter prepared by a different method?