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solmaris [256]
3 years ago
6

Hola tengo un examen, no es necesario que me den todas las respuestas pero me seria de gran ayuda si me respondieran las que sep

an
Calcula la cantidad de gramos que hay en 12,5 mol de NaCl (Masa Na: 23,0; Cl: 35,5)
Opciones:
737,5 g de NaC
737,5 gr de NaC
738,5 g de NaC

Determinar la cantidad de moles y átomos de Calcio que hay en 120 g de Ca. (Masas Ca:40)
opciones:
3 mol de Ca y 1,8066 x 10^24
3 mol de Ca y 1,8065 x 10^24
3 mol de Ca y 1,8067 x 10^24

Para el ácido sulfúrico H2SO4 (Masas H:1,0 S: 32,01; O: 16,0). ¿Cuál es su masa molar?
opciones:
98 Kg/mol
98 gr/mol
98 g/mol

Cuántos átomos de Magnesio (Mg) hay 52 g de este (Masa Mg: 24,31)?
opciones:
12.89 x 10^23 (4 puntos)
12.88 x 10^23 (4 puntos)
12.88 x 10^24 (4 puntos)

Sabrías decir el número de moles de átomos de carbono en 513 g de C12H22O11 (Masa molar de C12H22O11: 342 g)
17 mol de átomo de C.
16 mol de átomo de C.
18 mol de átomo de C.

Ncesito ayuda no entiendo :( de verdad estaria agradecido si me ayudan
Biology
1 answer:
Verdich [7]3 years ago
6 0
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