Urgent: in the reaction below, what is the maximum mass of nacl that can be formed when 28 grams of sodium reacts with 55 grams of chlorine?

2na+cl_2 -> 2nacl

1)45.3 g nacl
2)58.45 g nacl
3)71.2 g nacl
4)90.7 g na cl

Maximum mass of NaCl that can be formed =

3) 71 .2 g NaCl

Explanation:

Limiting reagent : The substance that is consumed in the reaction . The limiting reagent predicts the amount of product produced.

Molar mass = mass of substance present in 1 mole of molecule.

mass of Cl = 35.43 u

Molar Mass of Cl2 = 2 x 35.43 = 70.99 g

1 mole Cl2 = 70 .99 g

Molar Mass of Na = 22.99 g

1 mole of Na = 22.99 g

Molar Mass of NaCl =  58.54 g

1 mole of NaCl = 58 .54 g

The balanced equation is :

First, find the limiting reagent in this equation:

2 mole of Na need = 1 mole of Cl2

2 x 22.9 gram Na need = 70.99 gram of Cl2

45.8 gram Na need = 70.99 gram of Cl2

1 gram  Na need =

gram Cl2

1 gram  Na need = 1.55 gram Cl2

28 gram Na needs = 1.55 x 28 gram Cl2

28 gram Na needs = 43.4 gram Cl2

Cl2 in the reaction = 55 gram

Cl2 Needed = 43.5 gram

So , Cl2 is excess and Na is the limiting reagent (it is less than needed)

Now , Calculate NaCl produced from Na only

(Cl2 is of no use because it is excess reagent , it can't predict the amount of NaCl)

2 mole of Na will form = 2 moles of NaCl

So, 1 mole of Na = 1 mole of NaCl (use Molar mass of Na and NaCl)

22.9 gram of Na will form  = 58.4 gram NaCl

1  gram of Na =

= 2.55

1  gram of Na will produce = 2.55 gram of NaCl

28 gram of Na = 28 x 2.55 gram of NaCl

= 71.40 gram of NaCl

28 gram of Na = 71.40 gram of NaCl

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i  

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.