Electrons = protons
protons = atomic number
protons + neutrons = atomic mass
Therefore: a) protons + 7 = 15
protons= 15 -7
protons= 8
B) Remember proton = atomic number
so atomic number = 8
C)Now we know the atomic number so we can easily check on the periodic table what element has an atomic number of 8, which is Oxygen
e.g. pliers, cutters, crimps, wire wrapping tools, etc., if youre meaning electronic hand tools
Answer:
In homogeneous solute dissolves completely in latter it doesn't
homogeneous example: sugar and water
heterogeneous: oil and water
Answer:Search Results
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As the torrent of water dried up for the first time in thousands of years, it revealed a horrific sight. n(CO2) = mass(CO2)/Molar mass(CO2) = 112/44 = 2.5454
Explanation:
