Porquê que o potássio é mais reativo que o cálcio? urgente!

At color do you see most clearly in total darkness, red or white

How many grams are in 2.34 mol Co?

The chemical equation shows how ammonia reacts with sulfuric acid to produce ammonium sulfate. 2NH3 (aq) + H2SO4 (aq) (NH4) 2SO4 (aq) How many grams of ammonium sulfate can be produced if 60.0 mol of sulfuric acid react with an excess of ammonia

If an object floats, what is the volume of displaced water equal to? the volume of the portion of the object that is above water the volume of the entire object the volume of the portion of the object that is submerged the volume of exactly half of

How many moles of Ca3 (PO4) 2 can be formed when 1.9 moles of CaCO3 react with 2.7 moles of FePO4?

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?

An element x forms an iodide (xi3) and a chloride (xcl3). the iodide is quantitatively converted to the chloride when it is heated in a stream of chlorine: 2xi3+3cl2â2xcl3+3i2 if 0.5500 g of xi3 is treated, 0.2596 g of xcl3 is obtained.

When you kick a soccer ball across a field it will eventually come to a stop. Does this prove or disprove Newton's first law of motion? It disproves Newton's first law of motion because gravity is stronger than friction.

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball