Question

What mass of glucose would you need (in g) to have 0.8 mol, given that the molar mass of glucose is 180 g mol-1?

Answer 1

no. of moles = ( mass in gms )/ ( molar mass )

mass in gm = no. of moles*molar mass

= 0.8*180

= 144 gm

Answer 2

Answer: 144 grams of glucose is required for having 0.8 moles of glucose.

Explanation:

The mole is the amount of substance of a species which has as many units as there are atoms in 12 gram of Carbon-12.

The symbol of mole is mol

Mole is scientific unit used for measuring the quantity of atoms or molecules.

1 mole of an compound will have 6.022 × 10²³ molecules.

6.022 × 10²³ is also known as Avagadro's number. It is denoted by the symbol $N_A$. It is named in honour of Italian physicist Amedeo Avogadro.

Number of moles = Mass taken ÷ Molar mass

Let the mass of glucose required to have 0.8 moles be m g.

Molar mass of glucose = 180 g

Therefore,

⇒ $0.8 = \frac{m}{180}$

⇒ m = 0.8 × 180

⇒ m =  144

#SPJ2