8.769 of impure sample containing H2C2O4(s) was dissolved completely in 250 cm3 of distilled
water to form a solution . 25.0cm3 of this
Solution was pipetted out in a conical flask
and titrated with 0.0650 moldm^-3 acidified
K2Cr2O7(aq). 31.80 cm ^3 of K2Cr2O7(aq) was
used . Calculate the percentage purity of
the sample.

a police officer and a ambulance

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

2b2t

explanation:

2b2t