Answer to Question #275340 in General Chemistry for tot

Question

5) if an amount of sodium contains 3.01 X10^23 atom, then the mass of this amount equals...... g (Na=23)

Answer 1

No of mole = nonof atoms/avogadro's constant

No of mole=3.01×10²³/6.02×10²³

no of mole=0.5

Mole=mass/molar mass

Mass = mole×molar mass

Mass=0.5×23

Mass=11.5g