For the reaction 2 S(s) + 3 O2(g) → 2 SO3(g)
how much SO3 will be produced from 2.0 mol
O2 and excess S?
1. Cannot be determined unless the limiting
reactant is known.
2. 0.75 mol SO3
3. 1.3 mol SO3
4. 2.0 mol SO3

the answers would be

the first one and the second one

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

hope this :