A certain element is a clear, stable gas at room temperature. An atom of this element has 7 protons, 7 electrons, and a mass number of 15. How many neutrons are in this atom?

Number of neutrons = 8

Further explanation

Given

7 protons, 7 electrons, and a mass number of 15.

Required

Number of neutrons

Solution

Within the atom there are subparticles, namely protons, neutrons and electrons

Protons and neutrons are present in the atomic nucleus, while electrons surround the atomic nucleus in the atomic shell

Atomic number = number of protons = number of electrons

Mass number= number of protons + number of neutrons

15 = 7 + number of neutrons

number of neutrons = 8

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.