Some ocean currents are caused by differences in the density of water from place to place around the globe. What two factors cause differences in ocean water density

A chemical reference book says that substance x is not soluble in water

What do scientists use to learn about the properties of the star?

What are the two oxidation states of nitrogen in nh4no2?

Why does a burning splint burn more vigorously in pure oxygen?

A student collects data during an experiment Mass of empty beaker - 77.25 Mass of 100L water-100.0 g Mass of salt - 20.0 g Total mass-197.

Why is burning is not a recommended method of disposing plastics

Why do cells have a plasma membrane? A. to separate protein from the nucleus B. to distinguish plants from animals C. to define the size of the cell D. to separate the inside of the cell from its enviroment

Base on its molecular mass, what is the molar mass of iron

For the following reaction in aqueous solution, identify all those species that will be spectator ions. Select all that apply. Na, SO4+Hg (NO3) 2HSO4+2NaNO3 Choose one or more: A. Hg2S04 B. Na2S04 C. Nat D. NO3 E. SO42- F. Hg2 (NO3) 2 G. NaNO3 H.

One mole of which hydrocarbon requires 8 mol o2 to achieve complete combustion to give carbon dioxide and water?