ESTEQUIOMETRIA 1 (Bio-105)

ESTEQUIOMETRIA 1 (Bio-105)

12th Grade

10 Qs

quiz-placeholder

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ESTEQUIOMETRIA 1 (Bio-105)

ESTEQUIOMETRIA 1 (Bio-105)

Assessment

Quiz

Chemistry

12th Grade

Practice Problem

Hard

Created by

ROLANDO VILCA PUCHO

Used 3+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

¿Cuál es la masa atómica del carbono-12?

12 g

12 g/mol

12 u

12 moles

12 mg

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué representa la masa atómica promedio?

Masa de un átomo neutro


Promedio ponderado de isótopos

Promedio de masas moleculares

Peso neto de un átomo

Masa de un ion

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Cuál es la masa molecular del H2O? (H = 1; O = 16)

18 g/mol

18 g

18 mg

18 uma

18 u/mol

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué representa un mol?


6,022×10²³ partículas

Masa total

Volumen del gas

6,022×10²³ moles

Concentración molar

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué indica la fórmula empírica?

Isótopos presentes

Composición exacta

Proporción mínima entre átomos

Enlace entre átomos

Masa molar

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Si se combinan 4 moles de H2 con 2 moles de O2, ¿Cuántos moles de H2O se forman?

2H2 + O2 2H2O

1

2

3

4

5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Si el porcentaje de impureza es 15 %, ¿cuánto reactivo puro hay en 100 g?

15 g

85 g

10 g

5 g

95 g

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