2. How many liters of O2 are needed to react completely with 475.0 L of H2S at STP? (3 pts.)

2H2S(g) + 3O2 (g) → 2SO2 (g) + 2H2O(g)

The balanced chemical reaction is given as:

2H2S (g) + 3O2 (g) 2SO2 (g) + 2H2O (g)

We are given the volume at STP of H2S to be used for the reaction. This would be the starting point for the calculations. We do as follows:

45.0 L H2S ( 1 mol / 22.4 L) ( 3 mol O2 / 2 mol H2S ) ( 22.4 L / 1 mol ) = 67.5 L O2 needed

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the child will have heterozygous dominant chromosomes as characters of his father are dominant over the characters of his mother.

the child is heterozygous

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

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