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CUESTIONARIO DE QUÌMICA 2DOS

Authored by Mirella Montes

Chemistry

7th Grade

Used 2+ times

CUESTIONARIO DE QUÌMICA 2DOS
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5 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Se pesan 6.12 gramos de Na, determine ¿Cuántas moles representan?

0,30 moles

0,29 moles

0,27 moles

0,28 moles

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Determina la masa molecular de la siguiente sustancia H2SO4

92 g

95 g

94 g

98 g

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Calcule el porcentaje de H, Sb, O, presentes en el àcido piro antimonioso

1,2 % - 74,4% - 24,4 %

1,6 % - 75,1 % - 23,9 %

1,4% - 72,3 % - 25,9 %

1,0 % - 74,9% - 24,8 %

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Clcule la masa molecular del Carbonato de hierro (III)

299,73

291,73

283,73

295,73

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

En un frasco de laboratorio hay 200 g de Tricloruro de hierro (FeCl3) . Averigua cuantas moles de esta sustancia contiene el frasco

1,30 mol

1,29 mol

1,24 mol

1,21 mol

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