Answer:
The correct option is: (C) It included negatively charged particles.
Explanation:
Sir Joseph John Thomson proposed an atomic model, known as the plum pudding model in 1904.
In this model, he<u> compared an atom to a plum pudding</u> and suggested that the <u>negatively charged electrons are the plums that are embedded in a uniform positively charged spherical pudding.</u>
Therefore, according to the plum pudding model, <u>an atom has no net electric charge</u> and <u>contains negatively charged electrons.</u>
2.02 x 10²³molecules
Explanation:
Given parameters:
Mass of NH₃ = 5.7g
Unknown:
number of molecules = ?
Solution:
To solve this problem, we need to approach it from the mole point of view.
A mole of any substance is the amount that contains the avogadro's number of particles.
We first find the number of molecules in NH₃ and then proceed to find the amount of particles it contains.
Number moles =
Molar mass of NH₃ = 14 + 3(1) = 17g/mole
Number of moles = = 0.34moles
Number of molecules;
1 mole of of NH₃ = 6.02 x 10²³
0.34 moles = 0.34 x 6.02 x 10²³ = 2.02 x 10²³molecules
learn more:
Number of moles brainly.com/question/1841136
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Answer:
At 15.2°C. Kinetic energy of molecules highly depends on the temperature - the warmer it is, the faster the molecules will move, especially in fluids (gases and liquids). If we consider that the formula for average kinetic energy of molecules is:
Ek = 3/2*k*T where k is Boltzmanns constant and 3/2 is, well, 3/2, kinetic energy of molecules really only depends on the temperature.
Explanation:
The formula for the half life is simply:
t1/2 = ln 2 / k
where k is the rate constant and can be calculated from
the formula:
rate = k [A]
where [A] is the initial concn = 0.25 M
k = 4.36 × 10-2 M s-1 / 0.25 M = 0.1744 s-1
t1/2 = ln 2 / 0.1744 s-1
<span>t1/2 = 3.97 s</span>
hey there!:
As El Tation is located at higher altitude than Old Faithful, the atmospheric pressure would be less at Ei Tatio.
Due to low pressure, the boiling point of water will be reduced at El Tatio. Hence, at lower temperature than Old Faithful, geysers will erupt at El Tatio due to depression of boiling point at reduced atmospheric pressure.
Hope this helps!