The instrument is a Geiger counter and is used to measure radioactive level around people's bodies.
The average atomic mass includes all of the isotopes of that atom which exist in nature. Almost all elements have at least two isotopes which naturally occur.
Recall that isotopes are atoms with the same atomic number (protons), but a different number of neutrons. Since neutrons contribute the same amount of mass as a proton (1 amu), differing numbers of neutrons will change the mass of the atoms.
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Silver has only 1 valence electron.
The electron configuration of Silver gives one outer shell electron, basically a valence electron.
Answer:
B.
Butter is a mixture of pure substances.
Explanation:
just poop and you will see
Answer:
Explanation:
First, let's review the ideal gas law, PV = nRT. In this equation, 'P' is the pressure in atmospheres, 'V' is the volume in liters, 'n' is the number of particles in moles, 'T' is the temperature in Kelvin and 'R' is the ideal gas constant (0.0821 liter atmospheres per moles Kelvin)