How many moles are in 640.00 grams of Glucose (C6H1206)? Express your answer rounded to 2 decimal places

Explanation:

The number of moles of glucose can be found by using the formula

where

n is the number of moles

M is the molar mass

m is the mass of the substance

First we must find the molar mass of glucose

The molar mass of glucose is

mass = 640 g

So we have

We have the final answer as

Hope this helps you

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

it's filtration, but this is an assumption so my apologies if i got this