Question

Ayuda necesito resolver estooop

Answer 1

18- Mm CH4 = 16 g/mol

n(moles) = masa/Mm

n = 0.25

masa = 0.25 x 16 g/mol = 4 g

19.  n = 0.125 moles
Mm Na2HPO4 = 142 g/mol

m = 0.125 moles x 142 g/mol = 17.75 g

20. Mm agua = 18 g/mol

m = 18 g/mol x  0.23 mol = 4.14 g

21. MmH2SO4 = 98 g/mol

m = 32.5 moles x 98 g/mol = 3185 g

22.  Mm butano = 58 g/mol

m = 50 g

n = 50 g / 58 g/mol = 0.862 moles de butano

23. Mm H2CO3 = 62 g/mol

n = 62 g / 62 g/mol = 1 mol

24. Mm Na2SO4 = 142 g/mol

moles (n) = 142 g / 142 g/mol = 1 mol

25. Mm KHCO3 = 100 g/mol

n = 10 g / 100 g/mol = 0.1 mol

29.  Mm  NaOH = 40 g/mol

moles = 1 g / 40 g/mol = 0.025 moles de NaOH

31. Mm  SO2 = 64 g/mol

g = 1 x 10²¹ moléculas x  64 g
                                       ``````````
                                     6.022 x 10²³ moleculas

g = 0.106

33.
Mm H2O = 18 g/mol

g = 1 molécula x      18 g
                             ````````````
                           6.022 x ²³ moléculas
g = 2.98 x ²³

34.
Mm O2 = 32 g/mol

g = 1 molecula de O2  x   32 g  O2
                                       ``````````````````
                                     6.022 x ²³ moleculas

g = 5.31 x 10⁻²³

35. Mm C12H22O11 = 342 g/mol

g = 1 molecula  x        342 g
                             ````````````````````
                               6.022 x 10²³ moléculas

g = 5.68 x 10⁻²²

37. Mm NaOH = 40 g/mol

particulas = 1 g  x      6.022 x 10²³  particulas
                               ``````````````````````````````````
                                           39.99 g

particulas= 1.50 x 10 ²²