How many total atoms are in .900 of p2o5

Given:

0.920 g of P2O5

Required:

Total atoms

Solution:

The molar mass of P2O5 is 284 grams per mole.

0.920 grams / 284 grams per mole of P2O5 = 3.24 x 10^-3 mole

P2O5

Using Avogadro’s law where 1 mole of substance equals

6.023 x 10^23 atoms

3.24 x 10^-3 mole P2O5 (6.023 x 10^23 atoms/mole) = 1.95

x 10^21 atoms P2O5

Hopefully this is correct

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.