Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. balance the equation for the synthesis of cryolite.
equation: al2o3(s) + naoh(l) + hf(g) > na3alf6 + h2o(g)
1. if 15.8 kg of al2o3(s), 55.4 kg of naoh(l), and 55.4 kg of hf(g) react completely, how many kilograms of cryolite will be produced?

The mass of cryolite produced is 65.06 kg

Explanation:

To calculate the number of moles, we use the equation:

     .....(1)

Given mass of aluminium oxide = 15.8 kg = 15800 g     (Conversion factor:  1 kg = 1000 g)

Molar mass of aluminium oxide = 102 g/mol

Putting values in equation 1, we get:

For the given chemical reaction:

As all the reactants are getting completely utilized. So, the amount of product can be determined by any 1 of the reactant.

By Stoichiometry of the reaction:

1 mole of aluminium oxide produces 2 moles of cryolite

So, 154.9 moles of aluminium oxide produces = of cryolite

Now, calculating the mass of cryolite by using equation 1, we get:

Moles of cryolite = 309.8 moles

Molar mass of cryolite = 210 g/mol

Putting values in equation 1, we get:

Hence, the mass of cryolite produced is 65.06 kg

hi,

the answer is d, it has indefinite shape but definite volume.

hope this !