Question

Смешали 800 грамм NaCI и 200 грамм KCI. Определите массовую долю веществ в смеси.

Answer 1

W(NaCL) = m(NaCL) / (m(NaCL)+m(KCL)) * 100% = 800 / (800+200) *100% W(NaCL)= 80%
W(KCL) = 100%-W(NaCL) = 100% - 80% = 20%
ответ 80% , 20%

Answer 2

Calculating the Mass Fraction of Substances in the Mixture

To determine the mass fraction of substances in the mixture of 800 grams of NaCl and 200 grams of KCl, we can use the following formula:

Mass Fraction = (Mass of Component / Total Mass of Mixture) * 100%

Let's calculate the mass fraction for each substance in the mixture.

For NaCl: Mass Fraction of NaCl = (800g / (800g + 200g)) * 100% = (800g / 1000g) * 100% = 80%

For KCl: Mass Fraction of KCl = (200g / (800g + 200g)) * 100% = (200g / 1000g) * 100% = 20%

So, the mass fraction of NaCl in the mixture is 80%, and the mass fraction of KCl in the mixture is 20%.

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