Explanation

• The molarity (M) of a solution represents the number of moles of solute per liter of solution (not per liter of water).
• A lower molarity indicates a more dilute solution, which means it contains more water.

Explanation

The molar mass of H2SO4, also known as sulfuric acid, is 98 grams per mole (g/mol).

Explanation

- Given: n = 4, l = 3

- When l = 3, it's an f-subshell

- The number of orientations = number of magnetic quantum number (mₗ) values = 2l + 1

- So, 2(3) + 1 = 7

Explanation

Chlorine (Cl2) is a strong oxidizing agent, which means it can accept electrons from other substances and cause them to be oxidized.

Chlorine is a powerful oxidizer and is often used as a disinfectant or bleach.

Explanation

Bond order = ½ (Number of bonding electrons − Number of antibonding electrons)  

For H₂:  

- Bonding electrons = 2  

- Antibonding electrons = 0  

Bond order = ½ (2 − 0) = 1

Explanation

"6.022 × 10²³ atoms of carbon"

Correct — Each CO₂ molecule contains 1 carbon atom

So, 1 mole of CO₂ has 6.022 × 10²³ carbon atoms

Explanation

Citric acid is a natural preservative and flavoring agent that is commonly used in foods and beverages to add a sour taste.

It is particularly useful in cold drinks, such as:

• Soft drinks (e.g., lemon-lime soda)
• Fruit juices (e.g., orange, grapefruit)
• Sports drinks
• Energy drinks

Explanation

Oxygen (O2) is not a greenhouse gas.

Greenhouse gases are gases in the Earth's atmosphere that absorb and emit radiation, trapping heat and contributing to the Greenhouse Effect.

The main greenhouse gases are:

• Carbon dioxide (CO2)
• Methane (CH4)
• Nitrous oxide (N2O)
• Water vapor (H2O)
• Ozone (O3)
• Chlorofluorocarbons (CFCs)
• Hydrofluorocarbons (HFCs)
• Perfluorocarbons (PFCs)

Explanation

Aldoses are carbohydrates that contain an aldehyde group (-CHO) in their molecular structure.

The aldehyde group is a functional group that contains a carbon-oxygen double bond and a hydrogen atom.

Examples of aldoses include glucose, galactose, and ribose.

Explanation

• The general formula for alkanes is CnH2n+2, where n is the number of carbon atoms in the molecule.
• This formula represents the saturated hydrocarbons, also known as paraffins.

Key Points:

• CnH2n is the general formula for alkenes
• CnH2n+1 is the general formula for alcohols