Q Calculations

[Lilly Catarozoli 1B]

When solving for Q, if the concentrations are given in mmol/L, do you have to change them to mol/l? Thanks!

[Nicole Huang 3F]

Yep! Unless they specifically say to leave it in mmol, I would always convert it to mol/L because that's the standard unit for concentrations.

[Q Scarborough 1b]

Yes you will need to convert to mol to avoid confusion with units.

[Abby Lam 3F]

I think moles/liters is the standard form, but I would always check if the question indicates certain units.

[Alara Aygen 3K]

Yes, you need to convert to moles as it is the correct unit for that calculation (unless it specifically asks for mmol).

[SahajDole_1C]

Depending on the question, but overall it should be in mol/L

[Nick Saeedi 1I]

Yes I always convert to mol/L unless specified otherwise.

[Sable Summerfield]

What exactly is mmol? What does it mean and how is it different from mol?

[Savana Maxfield 3F]

mmol means millimole; 1 mmol is equal to 0.001 mol!

[Sreeram Kurada 3H]

mmol is mol x 10^-3. mmol and mole are pretty much the same thing but just different decimal points.

[Jeremy Wei 2C]

Yes normally the units for Q would be mol/L

[OmarArafat_2K]

Yes, you should always convert to mol/L unless you are told otherwise.

[Kayle Lim 2C]

Yes, I always forget about unit conversions and it messes me up a lot! Now I always check units and make sure that everything is in its standard form before solving equations. It helps a lot to convert everything first so you final answer will be in the correct units. For Q, you would need to change mmol/L to mol/L unless the questions specifically tells you otherwise!

[Katie Phan 1K]

I would change the units to mol/L

[Gerardo Ortega 2F]

If some of the given concentrations are in mol/L while others are in mmol/L, you would have to convert them to the same unit to calculate Q.

[Jarrett Sung 3B]

It makes the most sense to change it from mmol to mol, because mol/L is the unit for concentration, which is incredibly important for Q or K values.

[YuditGaribay3J]

It would be best to convert them. Just to make sure that your values, especially at the end, make sense.

[Rachael Cohen 3G]

You would need to convert them if the question asks for your answer in mol/L.

[Charlie Russell 2L]

I think if both molarities are in mmol it's fine because the units cancel out in the Q ratio form

[Diana Aguilar 3H]

Hi! I think it is best to convert your units from mmol/L to mol/L since the units for Q are mol/L, unless the questions tells you otherwise.

[Moura Girgis 1F]

Since units ALWAYS have to match with the other units given in the equation/ formula, you would have to convert.

[Naomi Hernandez-Ramirez 1J]

units for Q are mol/L, mol/L is the standard form; unless the problem, wants them in different units