Shouldn't the question be asking for the number of molecules of O2? Anyway, in each mole of the KMnO4, there are two moles of O2, shown by the "O4" in the molecular formula. So, in 0.37 moles of KMnO4, there'll be 0.37 x 2 = 0.74 moles of O2. Then just multiply that by Avogradro's constant, and you've got the number of molecules of O2.
so if the question had the formula KMnO2 for example, i wouldnt have to times by 2? and sorry if this is the wrong forum, i literally just joined and have no idea what im doing, but thanks for directing me the right way
so if the question had the formula KMnO2 for example, i wouldnt have to times by 2? and sorry if this is the wrong forum, i literally just joined and have no idea what im doing, but thanks for directing me the right way
No; that'd mean that, in every mole of KMnO2, there was 1 mole of O2; so in 0.37 moles of KMnO2, then there'd be 0.37 moles of O2, due to the 1:1 ratio.
No; that'd mean that, in every mole of KMnO2, there was 1 mole of O2; so in 0.37 moles of KMnO2, then there'd be 0.37 moles of O2, due to the 1:1 ratio.
Well, yes, how many moles of the substance being asked about are in each mole of the substance you're being given information about, which is the only way to do it really.
Well, yes, how many moles of the substance being asked about are in each mole of the substance you're being given information about, which is the only way to do it really.