Jump to content

Msj Chem

  • Content Count

  • Joined

  • Last visited

  • Days Won


Msj Chem last won the day on October 11 2018

Msj Chem had the most liked content!

Community Reputation

191 Superstar

Profile Information

  • Gender
  • Exams
    May 2016
  • Country

Recent Profile Visitors

8,296 profile views
  1. Msj Chem

    Thermal Equilibrium

    Don't you mean thermal equilibrium between two objects of different temperature rather than chemical equilibrium? If you do mean thermal equilibrium , then you should check out Newtons law of cooling.
  2. Msj Chem

    Chemistry Revision Sources

    Hi, sorry to hear about your predicament. You may find my website helpful - it has videos and worksheets for the topics in SL and HL chemistry. www.msjchem.com
  3. Msj Chem

    What is the value of 1 atm in kiloPascals?

    Both STP and STAP are given in the data booklet. It should be stated in the question whether to use STP or SATP. STP is 273 K and 100 kPa and SATP is 298 K and 100 kPa. When doing calculations using gases, you should use STP unless otherwise stated. 1 atm is 101325 Pa or 101.325 kPa - this was used by the IB in the previous syllabus which gave a value for the molar volume of a gas of 22.4 dm3. The new syllabus uses 100 kPa which gives a molar volume of 22.7 dm3.
  4. Msj Chem


    Maybe this will help:
  5. Msj Chem

    Empirical formula lab

    If you took repeat trials in your lab, then you should average the change in mass between the pure Mg and the compound MgO.
  6. Msj Chem

    Acids and Bases HL Help!!!!!!!!

    Maybe these videos will help:
  7. Msj Chem

    personal engagement for IA

    Try here:
  8. Msj Chem

    Chemistry exam tips

    Maybe this will help:
  9. Msj Chem

    Is Ka and Q the same

    Ka is the acid dissociation constant and Q is the reaction quotient. Do you mean Kc and Q? Is so, maybe this video will help:
  10. Msj Chem

    Mass Spectrometry?

    Maybe this video will help: https://youtu.be/FbD5TTKGI-w
  11. Msj Chem

    Which option are you studying? (2016-onwards)

  12. Msj Chem

    Which option are you studying? (2016-onwards)

    You are free to answer whichever option you want in the exam. My advice would be to answer the option that you have studied before of course.
  13. Msj Chem

    Sn1 and Sn2 reactions in SL?

    At SL, you only need to know that halogenoalkanes undergo SN reactions to form alcohols. The mechanisms and kinetics (unimolecular and bimolecular) are not required at SL.
  14. Msj Chem

    Acids and Bases P1 Help!

    28. The aluminum ion has a high charge density and is able to hydrolyse water molecules to produce H+ ions in solution and a decrease in pH. 29. A buffer solution should have equal amounts of a weak acid and the salt of the weak acid and strong base. Whichever choice gives you that is the correct answer.
  15. Msj Chem

    Chemistry ppq about color in transition metals

    I have worksheets for this topic on my website. Maybe they will be helpful. http://www.msjchem.com/topic-13-periodicity-hl.html

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.