2023 NECO Chemistry Practical Answers [13th July]
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NECO MAY/JUNE 2023 FREE CHEMISTRY PRACTICALS (CHEM) QUESTION AND ANSWER ROOM

Thursday, 13th July 2023
Chemistry (Practical)
10:00am – 12:00pm

2023 NECO CHEMISTRY PRACTICAL ANSWERS [13TH JULY, 2023]:

TAKE NOTE:
Read this carefully and understand it before using the number 1

You are a science student, you should know what an endpoint is. Each school has theirs, we solved with ours.

Read this well, I took my time to explain everything. If your school decides to use our endpoint, then no need to read!

For question 1

Use your school's endpoint (average titre value). Ours is 21.20cm³. Wherever you see our endpoint (21.20cm³), put ur school's own. Your Chemistry teacher should have given you people before now...and calculate with ur school endpoint.

Replace our 21.20 in 1bi and re-do the calculation with ur own titre value u placed there.

If your school wants to use mine, then the chemistry teacher must submit endpoint similar to ours without much difference...eg 21.15, 21.20, 21.20, 21.30, 21.40, etc

The answer you got in 1bi, use it to solve 1bii.
Example: we calculated 0.04 x 21.20 / 25.00 and got 0.03392 but if u replaced our 21.20 with ur school's endpoint, u won't get same 0.03392 with us.

Then u can see we used 0.03392 we got in 1bi to solve in 1bii and used the answer we got to solve 1biii. So when u replace, remember to re-calculate in all.

You are a science student, you should definitely understand what I meant.

IF YOUR SCHOOL USED MY ENDPOINT, YOU CAN USE FILL YOUR FORM AS EXACT AS THIS. BUT IF NOT, MAKE CHANGES ONLY IN NUMBER 3 OF THIS FORM BY INPUTTING YOUR SCHOOL'S OWN




 

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