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Natali5045456 [20]
3 years ago
10

Scientists discover two new elements, element A and element X, and are able to determine their atomic mass. Element A has an ato

mic mass of 17 amu Element X has an atomic mass of 76 amu. These elements combine to form a compound with the following formula: AX3. Determine the molar mass of this compound.
a.93 g/mol
b.98 g/mol
c.110 g/mol
d.245 g/mol
e.262 g/mol
Chemistry
1 answer:
olga nikolaevna [1]3 years ago
5 0
17+76×3=228+17=245. D is right
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In this case, since the net ionic equation of a chemical reaction shows up the ionic species that result from the simplification of the spectator ions, which are those at both reactants and products sides, we take into account that aqueous species ionize into ions whereas liquid, solid and gas species remain unionized. In such a way, for the reaction of cesium phosphate and silver nitrate we can write the complete molecular equation:

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