A certain rock contains 71% orthopyroxene, 20% olivine and 8% clinopyroxene. Name this rock and describe it's provenance.

Fe2O3 + H2SO4à Fe2 (SO4) 3 + H2O For this unbalanced chemical equation, what is the coefficient for water when the equation is balanced?

What is one way to make a positive impact on air quality to reduce air pollution

Explain why water can dissolve some ionic compounds such as ammonium chloride

How many molecules of F2 react with 66.6 g NH3? (stoichiometry)

Which is an advantage of using chemical indicators?

How many moles of lithium are in 83 grams of lithium?

Ocean constitutes most of ___ of water a) Evaporation b) Precipitation c) Condensation d) Transpiration e) Sublimation Don't choose a random letter.

In the reaction, Zn + HCl-> ZnCl2 + H2, 25 grams Zn are reacted with 17.5 grams HCl. How many grams of H2 will be produced? A. 0.382 g of H2 B. 0.479 g of H2 C. 0.7865 g of H2 D. 0.484 g of H2

Is nail varnish soluble?

What is the periodic trend for atomic size from top and bottom in a group? From left to right in a period?