Chemistry, 21.10.2020 02:01 needhelpasap4900
El oxígeno es una mezcla homogénea ,elemento o compuesto ?
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An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
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Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?
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El oxígeno es una mezcla homogénea ,elemento o compuesto ?...
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