Year 10 Set 1 Solution calculations homework by https://padlet.com/mgrimshaw/r6by2eev0zys Tips for how to work out the answer! en-us 2016-11-09 00:41:06 UTC 2026-02-14 12:51:20 UTC hello@padlet.com Formulae 20loshima https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136276679 mol = M * dm^3
M = mol / dm^3
dm^3 = mol / M
Liam]]> 2016-11-09 01:10:04 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136276679 20jlee https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136276781 g/dm^3 / Mr = mol/dm^3
Jinu]]> 2016-11-09 01:10:57 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136276781 https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278089 1cm3 = 0.001dm3
1000cm3 = 1dm3
Isabel]]> 2016-11-09 01:20:44 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278089 20cwiggins https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278101 2016-11-09 01:20:49 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278101 20rsingh https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278110 mol = mass/Mr or Ar
mass = mol*Mr or Ar
Mr or Ar = mass/mol

Riddhi]]> 2016-11-09 01:20:55 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278110 Molarity 20iwang https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278217 Molarity is a concentration unit, defined to be the number of moles of solute divided by the volume of solution.
Ian]]> 2016-11-09 01:21:54 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278217 Don't round during a calculation so that the answer is more accurate.  20cwiggins https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278382 Fiona & Charlie]]> 2016-11-09 01:23:14 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278382 20akaye https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278575 # of moles= mass(g)/Mr

molarity(concentration)=#of moles/volume (dm^3)

Alex K

 
 ]]> 2016-11-09 01:25:04 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278575 Unit conversion 20smatsumura https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278611 1dm3=1000cm3
Easy to forget to convert 
Mistake: 0.50moldm-3*50cm3
Correct: 0.50moldm*0. 05dm3

Seiji and  ]]> 2016-11-09 01:25:21 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278611 Units 20rsoni https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278639 Unit for mass: grams
Unit for molarity: moldm^-3


Roshan ]]> 2016-11-09 01:25:38 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278639 Concentration= no. Of moles/ volume 20cwiggins https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278717 Charlie & Fioma]]> 2016-11-09 01:26:16 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278717 prevent confusion 20egrey https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278796 when you read the question, underline and focus on anything you need to find and calculate in the formula so you don't get confused  marek&emig

]]> 2016-11-09 01:27:00 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278796 Units 20rsoni https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278867 Convert to the same unit before doing a calculation
E.g. don't multiply moldm^3 by molcm^3

Ella]]> 2016-11-09 01:27:44 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136278867 20kromeijn https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136279801 1dm^3=1l
Kazuki

]]> 2016-11-09 01:35:07 UTC https://padlet.com/mgrimshaw/r6by2eev0zys/wish/136279801