How many nitrogen atoms are present in 25.00 g in N2O5?

2.79 x 10²³atoms

Explanation:

Given parameters:

Mass of N₂O₅  = 25g

Unknown:

Number of atoms of Nitrogen present  = ?

Solution:

To solve this problem, it is best to find the number of moles of nitrogen present in the sample first.

 Number of moles =

  Molar mass of N₂O₅  = 2(14) + 5(16) = 108g/mol

  Number of moles  =   = 0.23mol

  1 mole of N₂O₅ contains 2 mole of N

  0.23 mole of  N₂O₅ will contain 0.23 x 2  = 0.46mole of N

  1 mole of a substance  = 6.02 x 10²³ atoms

  0.46 mole of nitrogen  = 0.46 x 6.02 x 10²³ atoms = 2.79 x 10²³atoms

most likely he is cheating on you

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).