A good vacuum produced in common lab app...

A good vacuum produced in common lab apparatus corresponds to `10^(-6)` torr at `25^(@)C`. Calculate number of molecules per cubic centimeter at this T and P. In scientific notation, `x xx 10^(y)`. Find the value of `y`.

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

CHEMICAL EQUILIBRIUM
GRB PUBLICATION|Exercise D.Le Chateliera principle|16 Videos
ISOMERISM
GRB PUBLICATION|Exercise SUBJECTIVE TYPE|67 Videos

Similar Questions

Explore conceptually related problems

A beam of light has three lambda, 4144 "Å", 4972 "Å" "and"6216 "Å" with a total intensity of 3.6 xx10^(-3) Wm^(-2) equally distributed amongst the three lambda. The beam falls normally on an area 1.0 cm^(2) of a cleam metallic surface of work function 2.3 eV. Assume that there is no loss of light by reflection etc. Calculate the no. of photoelectrons emitted in 2 sec, in scientific notation, x xx 10^(y) find the value of y.

Average life time of a hydrogen atom excited to n=2 state is 10^(-8) s. Find the number of revolutions made by the electron on an average before it jumps to the ground state. If your answer in scientific notation is x xx 10^(y), then find the value of y.

A sparingly soluble salt gets precipitated only when the product of concentration of its ions in the solution (Q_(sp)) becomes greater than its solubility product. If the solubility of BaSO_(4) in water is 8 xx 10^(-4) mol dm^(-3) . Calculate its solubility in 0.01 mol dm^(-3) of H_(2)SO_(4) . Express your answer in scientific notation x xx 10^(-y) . Write the value of y.

Oxygen is present in a 1 L flask at a pressure of 7.6xx10^(-10)mm Hg . Calculate the number of oxygen molecules in the flask at 0^(@)C .

Silver (atomic weight 108 g mol^(-1)) has a density of 10.5 g cm^(-3) . The number of silver atoms on a surfaces of area 10^(-12) m^(2) can be expressed in scientific notation as Y xx 10^(-x) , The value of x is …….

GRB PUBLICATION-GASEOUS STATE-Exercise

In 1 litre rigid vessel at 1 atm and 300 K, N "collision/sec-cm"^(2) o...
Text Solution
|
0.5 L of evacuated container is filled by gas upto 1 atm exactly, by c...
Text Solution
|
At constant pressure mean free path of ideal gas lamda prop T^(x). Hen...
Text Solution
|
100 mL of a gas is stored over mercury in mercury manometer at 27^(@)C...
Text Solution
|
A good vacuum produced in common lab apparatus corresponds to 10^(-6) ...
Text Solution
|
An ideal gas at 650 Torr occupies a bulb of unknown volune. A certain ...
Text Solution
|
On litre flask contains air, water vapour and a small amount of liquid...
Text Solution
|
A diver at a depth of 10 m exhales a bubble of air of volume 24.63 mL....
Text Solution
|
The gas 'A' decomposes as A rarr B + 5C A partially decomposed gaseo...
Text Solution
|
A bulb of constant volume is attached to a very thin manometer tube as...
Text Solution
|
For oxygen at 25^(@)C, the collision diameter is 0.361 nm. What is the...
Text Solution
|
Two flasks A and B of equal volume containing NH(3) and HCl gases, are...
Text Solution
|
22.4 L CH(4) at 1 atm and 273 K was thought to have mass 16 g but when...
Text Solution
|
Two glass bulbs A and B are connected by a very small tube having a st...
Text Solution
|
A mixture of H(2),He and O(2) with mass ratio equal to the ratio of th...
Text Solution
|
1 mol of a gas is changed from its initial state (15 L, 2 atm) to fina...
Text Solution
|
PCl(5)(g) density (in g/L) of mixture at 24 atm and 300 K, when PCl(5)...
Text Solution
|
If the gas in container gas pressure 77 cm of Hg, then calculate the h...
Text Solution
|
One litre of N(2) and 2 litre of O(2) under identical conditions of T ...
Text Solution
|
For a real gas, if at critical conditions molar volume of gas is 8.21 ...
Text Solution
|