How many moles of hydrogen are present in a 2.76 L sample of acetylene gas (C2H2) at STP?

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

What effect does a decrease in temperature have on the overall rate of a chemical reaction? a decrease in temperature decreases . the reaction rate will

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide