Answer:
Explanation:
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In this case, according to the given chemical reaction, it is possible for us to calculate the produced grams of nitrogen monoxide by starting with 25.0 g of nitrogen via their 1:2 mole ratio and the molar masses of 30.1 g/mol and 28.02 g/mol, respectively and by some stoichiometry:
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8 electrons makes a full shell in an atom
When a non metal gains or share by two electrons then the valency will be 2^- or 2^+
2 is the number as you need to balance the equation
A is correct. If an atom has more protons than electrons it is positively charged, if more electrons than protons it is negatively charged. An equal number of each will make it neutral
