Amedicine has 421 mg of active ingredient per tablet. how many grams is this? a. 421000gb. 42.1 gc. 4.21 gd. 0.421 g

The answer is D. There are 1,000 milligrams in 1 gram. To get to your answer simply move the decimal point over three times towards the left.

2024.1g

Explanation:

Given parameters:

Number of moles of Na  = 34.6moles

Unknown:

Mass of product formed  = ?

Solution:

We must first establish the reaction equation as shown below;

                2Na      +         Cl₂    →    2NaCl

We solve from the known to the unknown specie;

               2 moles of Na produced 2 moles of NaCl

           34.6moles of Na will produce 34.6moles of NaCl

Now to find the mass of NaCl;

     mass = number of moles x molar mass  = 34.6 x (23 + 35.5)  = 2024.1g