Question

please give me the answer

don't send nonsense type of answer then I will report your answer ​

Answer 1

Answer:

1) mass of 6 ×10^23 molecules = 44g

mass of 1.0505 ×10^23 molecules =( 44/6×10^23)× 1.0505×19^23= 7.3g

2) molecules in 1 mole = 6×10^23

molecules in 0.25 mole = 6×10^23×0.25

= 1.5×10^23

3) 126g

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Answer 2

(i) mass of 6.022×10²³mole of CO2= 44u

mass of 1 mole = 44/6.022×10²³

mass of 1.0505×10²³ is

(44/6.022×10²³)(1.0505×10²³)

7.6 u

(ii)

1 mole of NH3 = 6.022×10²³

so 0.25 mole of NH3 is

= 0.25(6.022×10²³)

=⟩ 1.5×10²³

(iii) The unit mass of Na2SO3 is

2(23)+32+3(16)

=⟩ 126

Hope this helps you dear