Answer:
4,5*6,02*10^23
Explanation:
The moles seem always complex topic but not in fact,
Consider that
1 mole of apple is 1 * 6,02*10^23
Same as 1 dozen of apple is 1 * 12
<u>Answer:</u> The final volume of the gas is 1250 mL
<u>Explanation:</u>
To calculate the amount of work done for an isothermal process is given by the equation:
W = amount of work done for expansion process = -123.3 J = -1.217 L.atm (Conversion factor: 1 L.atm = 101.33 J)
Work done for expansion process is taken as negative
P = pressure = 783 torr = 1.03 atm (Conversion factor: 1 atm = 760 torr)
= initial volume = 71.1 mL = 0.0711 L (Conversion factor: 1 L = 1000 mL)
= final volume = ?
Putting values in above equation, we get:
Hence, the final volume of the gas is 1250 mL
The given blank can be filled with less and even cooler.
A long duration of decline in the temperature of the surface of the Earth and atmosphere, leading to the expansion or existence of the polar and continental ice sheets and alpine glaciers is known as an ice age.
During an ice age, there are many periods of glaciation that are periods when ice sheets and glaciers cover the majority of the Earth's surface.
The ice reflects more sunlight back into outer space than does the vegetated or bare ground. As the glaciers and ice sheets are more reflective, they captivate less sunlight and thus discharge less heat. This makes the climate of the Earth to become even cooler during the times of glaciation.
Answer:
The pH of the solution is 3.0
Explanation:
Considering:
Or,
Given :
For :
Molarity = 0.0030 M
Volume = 100 mL
The conversion of mL to L is shown below:
1 mL = 10⁻³ L
Thus, volume = 100×10⁻³ L
Thus, moles of :
Moles of = 0.0003 moles
Volume added = 200 mL
Total volume = 200 + 100 mL = 300 mL = 0.3 L
Thus,
SInce, it is strong acid. Thus, [H⁺] = 0.001 M
pH is defined as the negative logarithm of the concentration of hydrogen ions.
Thus,
pH = - log [H⁺] = - log 0.001 = 3.0
<u>The pH of the solution is 3.0</u>