12. When 2.00 g of H2 reacts with 32.0 g of O2 in an explosion, the final gas mixture will contain:

a. H2, H2O, and O2

b. H2 and H20 only

c. O2 and H20 only

d. H2 and O2 only

e. H20 only

Are you going to give an example of the plant or?

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.

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