Calculate the mass of oxygen needed to react 10.0g of calcium to form calcium oxide.

2CA+O2 = 2CaO

Which statement describes a catalyst?

Which numberdetermines how the periodic table is arranged?

What is the blond spot

Which organ system consists of the following levels of organization? kidney cells - - > kidney tissues - - > kidney A. excretory B. circulatory C. respiratory D. integumentary

for 2Na (s) + Cl2 (g) - >2NaCl (s) how many grams of sodium chloride will be made from 115 g of sodium metal when when reacted with excess chlorine gas

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).

what noble gas electron configuration is achieved by the bromine atoms in a molecule of BR2, a diatomic element?

What are facts on osmosis?

If a map of temperature displayed stripes parallel to the equator with equal temperatures at equivalent distances north and south of the equator, it would mean that only blank affected temperature.

What is the term for the amount of salts in water? Evaporation Evaporation Salinity Thermocline Density