Calculate δhrxn for the following reaction fe2o3(s)+3co(g)→2fe(s)+3co2(g).

Given: m∠apc = 27°, m dc = 27° find: m ab

If inflation is 6% and nominal gdp grew by 4%, then during the same period real gdp changed by a) -2% b) 2% c) 4% d) 5%

Which statements are true for invasive species? 1. they always stabilize an ecosystem. 2. they’re always successful in adjusting to a new habitat. 3. they often compete with the native species for resources. 4. they have the ability to displace the native species. 5. they’re always pests.