Calculate the volume (in ml) of 6. 25 x 10-4 m ferroin solution that needs to be added to a 10. 0 ml volumetric flask and diluted with deionized (di) water in order to prepare a calibration standard solution with a concentration of 2. 50 x 10-5 m ferroin.

Solve this problem e=0+4m+p/6 (i also need to know what they are asking)

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.

Land is to arable ; river is a, navigable b, shallow c, presumsor d, water