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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Ur e n d is not real

Answer( precipitate );

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.

Sink to the bottom. addition of potassium nitrate past it’s dissolution capacity at a particular temperature will cause the extra to just sink to the bottom of the glass.however, if you were to raise the temperature of the solution prior to dissolving it, and then slowly decrease the temperature after the dissolution, you would create a “supersaturated” solution - a solution that has more solute dissolved into it than should be allowed. if you add any extra solute past this, the entire solution would “crystallize,” and this is how you get those cool videos on youtube.