Jlabs 2024/2025 Exam Questions and
Answers | A+ Score Assured
When 1 g of sodium chloride (NaCl) is placed in 100 g of water, a solution
results. Once the solution is prepared, water is now considered what part of
the solution? - 🧠ANSWER ✔✔Solvent
How many electrons does the iron ion have when it forms the ionic
compound FeCl3? - 🧠ANSWER ✔✔23
What is the volume of the water in this graduated cylinder? - 🧠ANSWER
✔✔4.39 mL
The product in a balanced reaction is 4Al2O3. Which of the following shows
the number of aluminum and oxygen atoms in 4Al2O3? - 🧠ANSWER ✔✔8
atoms of aluminum and 12 atoms of oxygen
For an equal mass of each substance, which one will require the least
amount of heat to raise its temperature from 20°C to 30°C? - 🧠ANSWER
✔✔Glass
1
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, For an equal mass of each substance, which one will require the least
amount of heat to raise its temperature from 20°C to 30°C? - 🧠ANSWER
✔✔67.2 L
Which substance will release the greatest amount of heat when 1.00 mol is
frozen? - 🧠ANSWER ✔✔Benzene
A student hypothesizes that bromine (Br) has different chemical properties
from krypton (Kr). The periodic table supports this hypothesis by indicating
that - - 🧠ANSWER ✔✔bromine and krypton have different numbers of
valence electrons
A mixture of gases with a pressure of 800 mmHg contains 10% oxygen and
90% nitrogen by volume. What is the partial pressure of the oxygen gas in
the mixture? - 🧠ANSWER ✔✔80 mmHg
Zn(s) + 2HCl(aq) → ZnCl2 + H2(g)
What type of reaction is shown? - 🧠ANSWER ✔✔Single Replacement
Hydrogen chloride is a covalent compound. Which is a correct Lewis dot
structure for HCl? - 🧠ANSWER ✔✔..
2
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
Answers | A+ Score Assured
When 1 g of sodium chloride (NaCl) is placed in 100 g of water, a solution
results. Once the solution is prepared, water is now considered what part of
the solution? - 🧠ANSWER ✔✔Solvent
How many electrons does the iron ion have when it forms the ionic
compound FeCl3? - 🧠ANSWER ✔✔23
What is the volume of the water in this graduated cylinder? - 🧠ANSWER
✔✔4.39 mL
The product in a balanced reaction is 4Al2O3. Which of the following shows
the number of aluminum and oxygen atoms in 4Al2O3? - 🧠ANSWER ✔✔8
atoms of aluminum and 12 atoms of oxygen
For an equal mass of each substance, which one will require the least
amount of heat to raise its temperature from 20°C to 30°C? - 🧠ANSWER
✔✔Glass
1
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, For an equal mass of each substance, which one will require the least
amount of heat to raise its temperature from 20°C to 30°C? - 🧠ANSWER
✔✔67.2 L
Which substance will release the greatest amount of heat when 1.00 mol is
frozen? - 🧠ANSWER ✔✔Benzene
A student hypothesizes that bromine (Br) has different chemical properties
from krypton (Kr). The periodic table supports this hypothesis by indicating
that - - 🧠ANSWER ✔✔bromine and krypton have different numbers of
valence electrons
A mixture of gases with a pressure of 800 mmHg contains 10% oxygen and
90% nitrogen by volume. What is the partial pressure of the oxygen gas in
the mixture? - 🧠ANSWER ✔✔80 mmHg
Zn(s) + 2HCl(aq) → ZnCl2 + H2(g)
What type of reaction is shown? - 🧠ANSWER ✔✔Single Replacement
Hydrogen chloride is a covalent compound. Which is a correct Lewis dot
structure for HCl? - 🧠ANSWER ✔✔..
2
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
