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ENTRADA

Authored by Jorge Barrera

Chemistry

1st Grade

7 Questions

Used 25+ times

ENTRADA
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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

indicar la atomicidad del ácido carbónico

C: +2; +4

4

5

6

7

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

1. ¿Cuántas moles están contenidos en 495 g de gas fosgeno, COCl2?

Cl=35,5; C=12; O=16

2 mol

4 mol

5 mol

5 g

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

calcular X si C2Hx tiene una masa de 30 uma

C=12; H=1

2

4

6

8

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

indicar la formula de la soda caustica

Na2O

NaH

NaOH

KOH

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

la región energética de mayor probabilidad electrónica se conoce como:

subnivel

orbital

nivel

spin

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

hallar el estado de oxidacion del cromo, en el acido dicromico: H2Cr2O7

6

+6

4

+4

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

convertir 4 pulgadas a centímetros

10,16 cm

20,32 cm

5,08 cm

7,62 cm

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