Question

8. Which has the highest mass?
(a) 2 moles of sodium
(c) 12.04 x 102 molecules of H,
(b) 5 moles of water
(d) 12 g of carbon​

Answer 1

Answer:

Is this science work or not

Answer 2

Answer:

Option A

Step-by-step explanation:

A. 1 mole of C atom contains the mass 12g 

B. 1 mole of CH4 contains 1×12(atomic weight of carbon) + 4×1 (atomic weight of  hydrogen) =16g 

⇒ 1 mole of CH4 contains the mass of 16g  

21 mole of CH4 contains 216=8g

C. 1 ml of H2O contains 1 gram weight. 

10 ml of H2O contains 10 grams weight

D. 1 mole of oxygen has the mass of  16g. 

From Avogadro's rule, 1 mole contains 6.0223×1023atoms

⇒  6.022×1023 atoms contains the mass of 16g 

26.022×1023atoms  =3.011×1023  atoms contain 216g=8g 

3.011×1023  atoms contain 8g 

From above options, option A contains the highest mass.