Química - Avaliação 1° Bimestre 2024

Quiz
•
Chemistry
•
11th Grade
•
Hard
Jefferson Gonsalves
Used 7+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Determine a massa de 2 mols de ácido sulfúrico (H2SO4).
196 g
80 g
32 g
160 g
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Determine a massa molar do ácido acético (CH3COOH).
60 g/mol
58 g/mol
46 g/mol
76 g/mol
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Quantos mols de hidróxido de sódio (NaOH) estão presentes em 240 g do composto?
3 mols
5 mols
6 mols
4 mols
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Se 28 g de ferro (Fe) reagem com excesso de ácido clorídrico (HCl), produzindo 36 g de cloreto de ferro (FeCl2) de acordo com a equação Fe + 2HCl → FeCl2 + H2, qual é o rendimento da reação?
55%
87%
57%
60%
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Se 30 g de amônia (NH3) reagem com excesso de oxigênio, produzindo 20 g de nitrogênio (N2) de acordo com a equação 4NH3 + 3O2 → 2N2 + 6H2O, qual é o rendimento da reação?
60%
71%
81%
90%
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