1) How many molecules are there in 985 mL of nitrogen at 0.0° C and 1.00 x 10-6 mm Hg?

Answer : The number of molecules present in nitrogen gas are,

Explanation :

First we have to calculate the moles of nitrogen gas by using ideal gas equation.

where,

P = Pressure of gas =      (1 atm = 760 mmHg)

V = Volume of gas = 985 mL = 0.982 L    (1 L = 1000 mL)

n = number of moles  = ?

R = Gas constant =

T = Temperature of gas =

Now put all the given values in above equation, we get:

Now we have to calculate the number of molecules present in nitrogen gas.

As we know that 1 mole of substance contains number of molecules.

As, 1 mole of gas contains number of molecules

So, mole of gas contains number of molecules

Therefore, the number of molecules present in nitrogen gas are,

pla·gia·rism

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noun

the practice of taking someone else's work or ideas and passing them off as one's own.

explanation:

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.