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wellersonvictor
@wellersonvictor
August 2022
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Calcule o número de moléculas em:
4kg de Na OH
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WillQuimica
Verified answer
Resolução:
Massa molar do NaOH = 23+16+1 = 40 g/mol-1
1 kg -------------------> 1000 g
4 kg ------------------> x g
x = 4.1000 = 4000 g
40 g de NaOH ----------------------> 6.10
²³
moléculas de NaOH
4000 g de NaOH ----------------> x moléculas de NaOH
40.x = 4000 . 6.10²³
40x = 2,4.10²7
x= 2,4 .10²7 / 40
x = 6.10²5 moléculas de NaOH
espero ter ajudado, bons estudos !!
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Verified answer
Resolução:Massa molar do NaOH = 23+16+1 = 40 g/mol-1
1 kg -------------------> 1000 g
4 kg ------------------> x g
x = 4.1000 = 4000 g
40 g de NaOH ----------------------> 6.10²³ moléculas de NaOH
4000 g de NaOH ----------------> x moléculas de NaOH
40.x = 4000 . 6.10²³
40x = 2,4.10²7
x= 2,4 .10²7 / 40
x = 6.10²5 moléculas de NaOH
espero ter ajudado, bons estudos !!