Estequiometria
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Other
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10th Grade - Professional Development
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Practice Problem
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A Estequiometria estuda:
a energia das reações
a troca de elétrons entre substâncias
a proporção entre quantidades de reagentes e produtos
a velocidade das reações químicas
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O que deve ser feito antes de iniciar a resolução de exercícios de estequiometria?
balancear equação
calcular a massa molar
calcular volume molar
fazer regra de três
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Como calcula-se a massa molar?
colocando substância na balança
medindo o volume ocupado
utilizando fórmula e massas dos componentes
fazendo balanceamento da equação
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O que é Volume Molar?
volume das moléculas
volume ocupado por 1 mol de gás na CNTP
volume ocupado por qualquer gás
volume ocupado por 1 mol de vapor
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O que é Reagente Limitante?
reagente em maior quantidade
reagente que está impuro
reagente sólido
reagente que é consumido totalmente
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quanto vale 1 mol?
10g
6 x 1023 entidades
6000 mL
6 x 1020 entidades
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sobre o Reagente em Excesso, é o reagente que:
sempre é totalmente gasto
nunca é consumido completamente
está impuro
diminui o rendimento da reação
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