Convert 3.55 moles Nacl to formula units

2.14 x 10²⁴ formula units

Explanation:

Given parameters:

Number of moles of NaCl  = 3.55moles

Unknown:

Formula units of NaCl  = ?

Solution:

A mole of substance contains the avogadro's number of particles. The number of particles could be protons, atoms, neutrons, formula units etc.

  1 mole of substance  = 6.02 x 10²³ formula units

   3.55 mole of NaCl  = 3.55 x 6.02 x 10²³

                                    = 2.14 x 10²⁴ formula units

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong