What is the change in internal energy ( ΔU ) of the system if q = –8 kJ and w = –1 kJ for a certain process? a. -7 kJ
b. 9 kJ
c. 7 kJ
d. -9 kJ
e. -8 kJ

14 days is the half-life of phosphorus-32

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

a electronegativity decreases beacuse the size of nucleus is bigger.