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CHEM 1030 Exam 3 – Forbes Questions With Correct Answers..pdf

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CHEM 1030 Exam 3 – Forbes Questions With Correct Answers..pdf

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2025/2026

Institution CHEM 1030

Course CHEM 1030

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CHEM 1030 Exam 3 – Forbes Questions With Correct Answers..pdf

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CHEM 1030 Exam 3 – Forbes Questions
With Correct Answers.

Law6of6Conservation6of6Mass6-
correct6answer✔ ✔ matter6cannot6be6created6or6destroyed6and6therefore6mass6is6al
6

ways6conserved6in6a6chemical6reaction

stoichiometric6coefficient6-6correct6answer✔ ✔
tells6us6the6ratio6of6each6element6in6a6chemical6equation6-6based6on6moles

What6reacts6in6a6chemical6equation?6-6correct6answer✔ ✔
MOLES6REACT6WITH6MOLES6-6grams6do6not6react6with6grams

deriving6empirical6formulas6from6percent6composition6-6correct6answer✔ ✔
1.6assume6you6have61006g6of6sample
2.6convert6percentages6to6mass6values
3.6convert6mass6to6moles
4.6calculate6a6mole6ratio6by6dividing6by6the6smaller6mole6value
5.6convert6mole6ratio6to6small6whole6numbers

percent6composition6-6correct6answer✔ ✔
the6percentage6by6mass6of6the6constituent6elements6of6a6compound6with6respect6to6it
s6total6mass

finding6percent6composition6-6correct6answer✔ ✔
%6comp.=6[(mass6of6element)/(total6mass)]6x6100

, relationship6between6molecular6and6empirical6formula6-6correct6answer✔ ✔
molecular6formula6=6(empirical6formula)n

how6to6find6n6in6reference6to6deriving6molecular6formula6-6correct6answer✔ ✔
n6=6molecular6mass6/6mass6of616empirical6formula6unit

combination6reaction6-6correct6answer✔ ✔
two6or6more6reactants6combine6to6form6a6new6larger6product

decomposition6reaction6-6correct6answer✔ ✔
a6single6reactant6breaks6down6to6form626or6more6products

single6displacement6reaction6-6correct6answer✔ ✔
a6single6element6displaces6a6similar6element6in6another6compound

double6displacement6reaction6-6correct6answer✔ ✔
two6elements6are6displaced6(like6switching6partners)6-
similar6things6replace6similar6things
6

combustion6reaction6-6correct6answer✔ ✔
a6rapid6reaction6between6a6molecule/compound6and6oxygen6that6produces6energy6(h
eat)

hydrocarbon6combustion6-6correct6answer✔ ✔
when6a6hydrocarbon6reacts6with6oxygen6to6form6carbon6dioxide6and6water
CH6+6O26->6CO26+6H2O6+6heat

theoretical6yield6-6correct6answer✔ ✔
the6maximum6amount6of6product6possible6in6a6chemical6reaction6for6the6given6quantiti
es6of6reactants

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Number of pages: 9
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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