Iron pyrite, FeS2, reacts with O2 according to the following reaction: 4 FeS2(s) + 11 O2(g) ® 2 Fe2O3(s) + 8 SO2(g)
a) Calculate the mass of Fe2O3 that is produced from the reaction of 75.0 L of
O2(g) at 2.33 atm and 150.0oC with an excess of FeS2.

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

What stress will shift the following equilibrium system to the left? n2(g) + 3h2(g) ⇌ 2nh3(g) adding more n2(g) adding more nh3(g) increasing the pressure of the system reducing the volume of the container

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.