Well, I know one. A positive: decreasing pollution because most people are in quarantine and not outside.
Number of proton K=19
so, 42 - 19 =23
then the answer in 19 protons and 23 neutrons
What class is this? (Subject)
Electrons are particles that have a negative charge. Therefore, an element in a neutral state will have the same number of protons and electrons.since the atomic number corresponds to the number of protons. atomic number of carbon is 6, so number of electron is also 6
To find the number of neutrons, you will need to subtract the atomic number from the atomic mass.
13 - 6 = 7 neutrons
Answer:
The pOH of a solution that has a pH of 6.25 at 100°C is 7.75 (option D)
Explanation:
pOH + pH = 14
pOH = 14 - 6.25
pOH = 7.75
Therefore, at 100°C, the Kw of water is 5.6x10⁻¹³ and the pOH of a solution that has a pH of 6.25 at 100°C is 7.75.
Thus, option D, is the correct answer.
