How many elements are there in the periodic table?

Suppose a 250. mL flask is filled with 0.30 mol of N_2 and 0.70 mol of NO. The following reaction becomes possible: N_2 (g) + O_2? 2NO (g) The equilibrium constant K for this reaction is 7.70 at the temperature of the flask.

How many moles of Hg will be produced from 39.0 of HgO?

A researcher wants to test the solubility (property of being dissolved) of salt in water as the temperature of the water increases.

What is a the partial pressure of helium gas in a closed system containing 0.775 mol of helium gas, 1.12 mol of methane gas, and 0.592 mol of hydrogen gas? The system containing the three gases has a total pressure of 1.50 atm.

Can you discribe physical and chemical properties

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

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.