stoichiometric

[Tiffanny_Carranza_2D]

can someone clarify this question? I am not sure what it is asking
maybe i just don't know how to start it.

Without using a calculator, estimate what amount of Br 2 (in
moles) can be obtained from 0.30 mol ClO 2 in the reaction
6 ClO2(g) 1 2 BrF3(l) S 6 ClO2F(s) 1 Br2(l).

[Anh Trinh 1J]

First I would find the ratio of the reactants and products. 6 moles ClO2 can yield 1 mole Br2, so the ratio is 6:1. Given 0.3 mole ClO2, you would then divide that by 6 to estimate the amount of Br2 obtained.

[Leah Wildmann 1F]

Stoichiometric coefficients in a balanced equation give you the ratio of reactants to products in moles. So, here the ratio is 6 ClO2 to 1 Br2. This is because the stoichiometric coefficient of ClO2 (on the reactant side) is 6 and of Br2 is 1. This means that 6 moles of ClO2 will produce 1 mole of Br2. So, you just need to divide the moles of ClO2 (in this case 0.3) by 6 to get the moles of Br2.