If 10.6 kg of al2o3(s),10.6 kg of al2o3(s), 51.4 kg of naoh(l),51.4 kg of naoh(l), and 51.4 kg of hf(g)51.4 kg of hf(g) react completely, how many kilograms of cryolite will be produced?

43.668 kg

Explanation:

First we set the equation:

Now, we need to now the kmoles for each reactant:

With this, we can see that the limit reactant is the aluminum oxide, so, with the equation for the reaction we know that 1 kmol of aluminum oxide, produces 2 kmol of cryolite, so we set a rule of three and see that 0.208 kmoles of cryolite are produced, the we proceed to calculate the mass:

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.