PLEASE HELP! What is the total pressure of a gas mixture containing 20.0 kPa of oxygen, 32.1 kPa of nitrogen and 4.20 kPa of neon?

56.30 kPa

Explanation:

In this case, the pressure of every gas in the mixture is given. Taking the sum of the pressures will give the total pressure of the gas mixture.

Using the Dalton's law of partial pressures, the sum of pressures of each individual gases gives the total pressure of a mixture of gases.

Ptotal= Poxygen + Pnitrogen + Pneon

P-total=20 + 32.1 +4.20 =56.30 kPa

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.