1 litre of water is = 55.5 moles of water.
water is H2O
so, in water:
moles of oxygen = 55.5
moles of hydrogen = 2 x 55.5 = 111
Now, 1 mole each of <span>CH4, NH3, H2S, and CO2 are added:
For CH4:
moles of C = 1
moles of H = 4 x 1 = 4
For NH3:
moles of N = 1
moles of H = 3 x 1 = 3
For H2S:
moles of H = 2 x 1 = 2
</span>moles of S = 1
<span>
For CO2:
</span>moles of C = 1
moles of = 2 x 1 = 2
<span>
Now, add the total moles of each atom:
Hydrogen = 111 + 4 + 3 +1 = 119 moles
Oxygen = 55.5 + 2 = 57.5
Carbon = 1+1 = 2
Sulfur = 1
nitrogen = 1
</span>
Answer:
Explanation:
mass ratio of oxygen and nitrogen in air at Miami
= 21 : 79
ratio of their moles
= 
( mol weight of oxygen is 32 and of nitrogen is 28 )
= .65625 : 2.8214
= 1 : 4.3
This ratio will also be maintained in the air of Denver though total pressure decreases there.
Partial pressure of oxygen in air at both the places
mole fraction of oxygen
= 
= .18868
partial pressure of oxygen at Denver
= .18868 x .83 x 760
= 119 mm.
Explanation:
A change that does not lead to any difference in chemical composition of a substance is known as a physical change.
For example, shape, size, mass, volume, density, boiling point, etc of a substance are all physical properties.
On the other hand, changes that lead to bring change in chemical composition of a substance is known as a chemical change.
For example, exploding dynamite, rotting cheese etc are all chemical changes.
Thus, we can conclude that following are the physical changes in matter.
- a pencil being sharpened.
<span>The bond angles of butane and tert butylcyclohexane are different. First, butane is an alkane that has four carbon atoms and its molecular geometry is that of a straight line. While tert butylcyclohexane is a cycloalkane that forms a ring like structure with one carbon atom attached with a tert butyl branch. Second, the tert butylcyclohexane is shorter in bond length and is strained due to the branched alkyl attached to the cycloalkyl compared to the butane that has no steric hindrance.</span>
