Coal does not produce flame when burnt because it does not vapourizes
Answer:
12.7.
Explanation:
∵ pOH = - log[OH⁻].
[OH⁻] = 0.051 M.
∴ pOH = - log[OH⁻] = - log(0.051 M) = 1.29.
∵ pH + pOH = 14.
∴ pH = 14 - pOH = 14 - 1.292 = 12.7.
<span>Microscopic foreign particles that droplets form on is called the hygroscopic nuclei. The particles are already present in the air in the form of dust, salt from seawater evaporation and combustion residue. Together the particles begin the forming process of droplets.</span>
Answer:
The temperature of the molecule will be increased by a factor of 9
Explanation:
The relationship between the temperature and the rms speed of a gas is given by
Vrms=√(3RT/MM)
Where R = Universal gas constant
T = Absolute temperature of the gas in kelvin
MM = Molar mass of the gas
Since from the question, only the rms speed and the temperature are said to change, the term 3R/MM can be represented by a constant k. The relationship then becomes Vrms=√kT
At the intitial speed, temperature = T1
Vrms=√(kT1 ) (1)
When the speed is increased by a factor of 3, the relationship becomes
(3V)rms=√(kT2 ) (2)
Dividing equation (2) by equation (1)
(3V)rms/Vrms =√(kT2 )/√(kT1 )
3=√(T2/T1 )
T2/T1 =9
The temperature of the molecule will be increased by a factor of 9
1 teaspoon contains <span>76.002146 drops
To know how many drops do 0.171 teaspoon contains, we can simply use cross multiplication as follows:
number of drops = (0.171 x </span><span>76.002146) / 1 = 12.9963 drops</span>