Answer: Density is a measure of mass per volume. The average density of an object equals its total mass divided by its total volume.
Explanation:
pretty self explanitory. (jk i googled it)
Answer:
Some of the Alpha particles shot at the gold foil bounced back.
Explanation:
Answer: 12 neutrons
Explanation: The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass). Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.
Answer: all of them.
Explanation:
Because you have 100 and then u have six hundredths
Answer:
pH = 13.1
Explanation:
Hello there!
In this case, according to the given information, we can set up the following equation:
Thus, since there is 1:1 mole ratio of HCl to KOH, we can find the reacting moles as follows:
Thus, since there are less moles of HCl, we calculate the remaining moles of KOH as follows:
And the resulting concentration of KOH and OH ions as this is a strong base:
And the resulting pH is:
Regards!