What is the total volume of carbon dioxide produced in the first 3.5 minutes?

Science Experiment Quiz

Quiz
•
Chemistry
•
1st Grade
•
Medium
John Wheeler
Used 2+ times
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
47 cm³
35 cm³
60 cm³
20 cm³
Answer explanation
The total volume of carbon dioxide produced in the first 3.5 minutes is calculated based on the rate of production. The correct answer is 47 cm³, as it aligns with the given data and calculations.
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Using the tangent, what is the rate of reaction at 3.5 minutes in cm³ per minute?
13.4 cm³ per minute
10 cm³ per minute
15 cm³ per minute
8 cm³ per minute
Answer explanation
To find the rate of reaction at 3.5 minutes, we use the slope of the tangent line at that point on the graph. The calculated slope is 13.4 cm³ per minute, making it the correct choice.
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which change would make the rate of reaction slower?
Using the same acid at a higher temperature
Using acid of a lower concentration
Using a larger flask
Adding a catalyst
Answer explanation
Using acid of a lower concentration decreases the number of reactive particles, leading to fewer collisions and a slower reaction rate. Higher temperature, larger flasks, and catalysts would generally increase the reaction rate.
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which property makes argon gas suitable for joining metal pieces with a very hot flame?
Argon has a low density
Argon has a low melting point
Argon is colourless
Argon is unreactive
Answer explanation
Argon is unreactive, which means it does not react with metals or other materials during welding. This property allows it to provide an inert atmosphere, preventing oxidation and ensuring a clean joint when joining metal pieces with a hot flame.
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the name of the substance with the formula AgNO₃?
Silver Nitrogen Oxide
Silver Nitrate
Silver Oxide
Silver Chloride
Answer explanation
The formula AgNO₃ represents Silver Nitrate, which consists of silver (Ag), nitrogen (N), and three oxygen (O) atoms. The other options do not match this composition.
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the electronic configuration of the Na⁺ ion?
1
2.8
2.8.1
2.8.2
Answer explanation
The Na⁺ ion has lost one electron from its neutral sodium atom, which has the electronic configuration of 2.8. Thus, the correct configuration for Na⁺ is 2.8, indicating it has 2 electrons in the first shell and 8 in the second.
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Why can a solution of sodium carbonate conduct electricity, but solid sodium carbonate cannot?
Ions in solution can move freely.
Solid sodium carbonate is a good conductor.
Electrons in solid can move freely.
Solution has no ions.
Answer explanation
A solution of sodium carbonate conducts electricity because the ions are free to move. In solid sodium carbonate, the ions are fixed in place and cannot move, preventing electrical conductivity.
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