<h3><u>Answer;</u></h3>
pH = 9.55
<h3><u>Explanation;</u></h3>
[NH3] = 2.0 mmol/20.0 mL = 0.100 M
[NH4+] = 1.00 mmol/20.0 mL = 0.0500 M
Ka = (1.0 × 10^-14)/(1.8 × 10^-5)
= 5.56 × 10^-10
pKa = log Ka = 9.25
pH = pKa + log ([base]/[acid])
= 9.25 + log (0.100/0.0500)
<u>= 9.55</u>
According to Boyle's Law,
" the volume of a fixed mass of gas is inversely proportional to the pressure applied on it'.
Mathmatically,
V ∞ 1 / P
Or,
V = k / P
Explanation:
The balloon filled with Neon gas outside the chamber will have greater volume than in the chamber because the pressure in the chamber is high as compared to outside. So, the outside force brings the molecule of gas to get closer to each other.
The number of particles (molecules or atoms) is: 6.022 x 10²³ particles (atoms or molecules).
1 mol of H₂O has 6.022 x 10²³ molecules.
1 mol of Al has 6.022 x 10²³ atoms.
The answer is option a, that is " <span>electromagnetic repulsions</span><span>".
The sun generates energy by nuclear fusion, and converts a part of its mass into energy and nuclear fusion is the source of all energy that is released by the sun. The two things which are required for the process of nuclear fusion are high temperature and the high densities.
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