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Questão de química muito difícil
A tabela abaixo mostra a variação da massa da substância C que se forma na reação A+B ___> 2 C:
tempo(s)….. Massa de C existente
0………………..0
10……………….5
30……………….15
50……………….40
80……………….60
A velocidade média de formação da substância C, em g/s, no intervalo de 0 a 50s vale:
a) 0,8 g/s
b) 1 g/s
c) 1,6 g/s
d) 3,2 g/s
Detalhes adicionais
acima, no final dos pontinhos, os numeros são:
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Answer #
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Answer #1
A velocidade média de formação (em base mássica) de C pode ser determinada pela razão entre a massa formada e o tempo decorrido, assim:
Vmf = deltaM/deltaT
Vmf = (40-0)/(50-0), já que no instante inicial T=0 a massa era M = 0.
Vmf = 0,8 g/s.