¿Cuál es la masa atómica del carbono-12?
ESTEQUIOMETRIA 1 (Biomedicas)

Quiz
•
Chemistry
•
12th Grade
•
Hard
ROLANDO VILCA PUCHO
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
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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