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⏰🤓 9.28

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Q 1/17
Score 0
The mass of Chemical A is 10g, and the mass of Chemical B is 5g. If the two chemicals are mixed and a chemical reaction takes place, what is the mass of the end products?
29
5g
15g
10g
50g

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17 questions

Show answers

Q1
The mass of Chemical A is 10g, and the mass of Chemical B is 5g. If the two chemicals are mixed and a chemical reaction takes place, what is the mass of the end products?
5g
15g
10g
50g
30s
Q2
The mass of the product of a reaction is 50g. If one of the two reactants measured 20g. How much would one predict the mass of the other reactant?
30g
25g
70g
50g
30s
Q3
How is the Law of Conservation of Mass best represented in a chemical reaction?
The answer depends on the reactants in the reaction.
Mass of the products is equal, however the mass of the reactants is greater.
Mass of the reactants is equal to the mass of the products.
Mass of the reactants is equal, however the mass of the product is greater.
30s
Q4
Two reactants, each having a mass of 40 grams, react fully in a beaker. What is the total mass of the products in the reaction?
20g
60g
0g
80g
30s
Q5
In this reaction, 2C₄H₆ + 11O₂ → 8CO₂ + 6H₂O, which of these is the reactants?
11O₂ + 8CO₂
8CO₂ + 6H₂O
2C₄H₆ + 6H₂O
2C₄H₆ + 11O₂
30s
Q6
In this reaction, 2C₄H₆ + 11O₂ → 8CO₂ + 6H₂O, which of these is the products?
2C₄H₆ + 6H₂O
8CO₂ + 6H₂O
11O₂ + 8CO₂
6H₂O + 2C₄H₆
30s
Q7
In this reaction, Mg + I₂ → MgI₂, which of these is not a reactant?
MgI₂
I₂
Mg
30s
Q8
Balanced or NOT: 2HCl + Zn → ZnCl₂ + H₂
NOT (Unbalanced)
Balanced
120s
Q9
Balanced or NOT: CaCl₂ + K₂CO₃ → CaCO₃ + 2KCl
Balanced
NOT (Unbalanced)
120s
Q10
Balanced or NOT: H₃PO₄ + 2FeBr₃ → FePO₄ + 3HBr
Balanced
NOT (UnBalanced)
120s
Q11
TOTAL Atoms: 4NaOH
4
12
10
3
60s
Q12
TOTAL Atoms: 3NH₄C₂H₃O₂
32
10
36
12
60s
Q13
Term: States mass can not be created nor destroyed, it's merely transformed.
Conservatory
Law of Conservation of Mass
Matter
Law of Conservation of Energy
30s
Q14
Which of these depictions of a chemical reaction supports the Law of Conservation of Mass (LOCM)?
60s
Q15
Which of these depictions of a chemical reaction supports the Law of Conservation of Mass (LOCM)?
60s

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