Please only answer w help and i will give you brainliest. <3 A reaction is created from mixing 2.0 L of 2.5 M HCl with excess solid K2S. How many liters of H2S gas at STP will form? 2HCl(aq)+K2S(s)→ H2S(g)+2KCl(aq)
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C3H8+5O2 → 3 CO2 +4H2O
If 33.6 liters of O2 gas at STP react with 55 grams of C3H8, what is the limiting reactant? How much water can be formed (in grams)?

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When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

What is the amount of energy for a photon that has a 125 cm wavelength

4al + 3o2 → 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 oxygen atoms after you add the coefficient and the subscript. b) it indicates that that there are are total of 6 oxygen atoms all bonded together as a single molecule. c) it indicates that there are 3 oxygen molecules chemically bonded to each other in the reaction. d) it indicates that there are 3 separate oxygen molecules in the reaction.