In the following reaction, how many grams of ferrous sulfide (fes) will produce 0.56 grams of iron (iii) oxide (fe2o3)? 4fes + 7o2 → 2fe2o3 + 4so2 the molar mass of ferrous sulfide is 87.92 grams and that of iron (iii) oxide is 159.7 grams.

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: