# What are the mass fraction and the molar concentration of glucose (#M_text(r) = 180.16#) in 320 g of a solution that contains 40 g of glucose?

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#"Density of solution = 1400 kg·m"^"-3"#

##### 1 Answer

The mass fraction of glucose is 0.125. The molar concentration is

#### Explanation:

**Mass Fraction**

The mass fraction

#color(blue)(bar(ul(|color(white)(a/a) w_i = m_i/m_text(tot)color(white)(a/a)|)))" "#

In this problem,

∴

**Molar concentration**

The formula for molar concentration

#color(blue)(bar(ul(|color(white)(a/a)c = "moles"/"cubic decimetres" = n/Vcolor(white)(a/a)|)))" "#

∴