Sarah spilt a bottle of ammonia in one corner of the laboratory. Soon the whole laboratory was filled up with pungent irritating order. The students immediately opened the doors and windows and switched on the exhaust fans. After some time, the students got relief. - State the values of the fellow students and teacher in the above accident. - Suggest any precaution which is needed in the laboratory.

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

List the path of the respiratory system

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.