Chemistry question on mol (1 Viewer)

[girlworld_club]

This is a relatively new concept to me. Please show full working and explanation please!

1. Consider 0.374g aluminum chloride, AlCl3 It contains how many moles of

a) Aluminum
b) Carbon

2. Calculate the mass of one molecule of sucrose.

and finally

3. A crystal of table sugar weighs C12H22O11 . How many molecules are present? How many atoms in total are present?

Thank you so much for any help!

 

[golgo13]

Question is weirdly placed, but for question:
1, just work out the molar mass (use periodic table), then work out the moles, by putting the 0374 / the molar mass, next i assuming for the question that ur asking is to work the percentage of aluminum in AlCl3

2,Find the molecular formula of sucrose and use periodic table (don't be lazy

3,Use the mass given in 3, dump it over the molecular mass from 2 and u have moles