PLEASE HELP I'VE BEEN STUCK ON THIS FOR 2 HOURS Calculate the mass of water produced from the reaction between 8.50 g of Hydrogen gas and 85.0 grams of Oxygen gas.

(You're going to need a periodic table, and this is Mass to Mass conversion)

Equation: 2H2O->2H2 + O2

I got the answer 180.7 gH202 but it's not correct.

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explanation:

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).