That would be the compound Ba(NO3)2. The Barium ion has a charge of 2+ so there are 2 NO3- ions in the formula to produce a neutral compound.
6.023*1023 He atoms=1 mole He
1.23×1024 helium atoms=1.23×1024/6.023*1023 =2.042 mole He
one mole He=4.0 gm
2.042 mole He=2.042*4.0=8.168 gm
answer in grams of Helium is 8.168 gm
The theory that all matter is made up of tiny indivisible particles (atoms). According to the modern version, the atoms of each element are effectively identical, but differ from those of other elements, and unite to form compounds in fixed proportions.
<span>remember that all elements want to have no valence electrons, they want to be like the noble gases.
Oxygen has six valence electrons, which means that it needs to gain two to become stable.
it takes much more energy for oxygen to lose its 6 valence electrons than it would be to gain 2.
>>When atoms form compounds, they become stable
hope this helps
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62.3018 g/mol is the molar mass
