1. Why does adding sodium chloride to a saturated solution of lead chloride reduce the solubility of PbCl2? Equilibrium is pushed toward the left in the equation
Naci(s)=Na+ (aq) + Cr (aq).
O Equilibrium is pushed toward the left in the equation
PbCl2 (s)=Pb2+ (aq) + 2Cr (aq).
O Equilibrium is pushed toward the right in the equation
Pbci, (s)= Pb2+ (aq) + 2Cr (aq).
O Equilibrium is pushed toward the right in the equation
Naci(s)=Na+ (aq) + Cr(aq).

when atmosphere interacts with biosphere they focuses on on the sources and sinks of green house gases (ghgs) air pollutants, particular matters, water and energy between the earth's surface and the atmosphere. the biosphere affects the climate. the atmosphere and biosphere are in constant interaction with each other, and all living things rely on gases in the atmosphere for life. organisms such as animals take in oxygen gas form the atmosphere to use in every cell of their body for smooth functioning of daily routine exercises.

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.