Explanation

• Salt (a solid) dissolves in water (a liquid) to form a solution.
• Making it a classic example of a solid-liquid solution.

Explanation

Remember that water has 2 lone pairs on oxygen.

Hence, according to VSEPR theory, the water molecule arrives at a bent or a V-shape

Due to the presence of lone pair-lone pair, lone pair-bond pair and bond pair-bond pair repulsions

Explanation

The molality (m) of a solution is the moles of solute divided by the kilograms of solvent. A solution that contains 1.0mol of NaCl dissolved into 1.0kg of water is a "one-molal" solution of sodium chloride.

The symbol for molality is a lower-case m written in italics.

Explanation

Methane molecule is sp3 hybridized and has a perfect tetrahedral geometry

Explanation

• Sugar and water is a classic example of a solution, where sugar (the solute) is dissolved in water (the solvent).
• The resulting mixture is a homogeneous solution, where the sugar molecules are evenly distributed throughout the water.

Explanation

• The solvent is the substance that dissolves the solute, typically present in a larger amount than the solute.
• It can be a solid, liquid, or gas, and its molecules or atoms separate the solute molecules or atoms, allowing them to dissolve.
• Examples: water, alcohol, and acetone.

Explanation

• The solute is the component of a solution that is dissolved in the solvent.
• It can be a solid, liquid, or gas, and it is typically present in a smaller amount than the solvent.
• Examples: sugar, salt, and coffee.

Explanation

• Carbon dioxide (CO2) is a greenhouse gas that plays a significant role in the Earth's greenhouse effect.
• It traps heat radiated from the Earth's surface, maintaining the Earth's temperature and keeping it warm enough to support life.
• Other greenhouse gases include methane (CH4), water vapor (H2O), and nitrous oxide (N2O).

Explanation

• When oil is burnt, it undergoes combustion, a chemical reaction that releases energy in the form of heat and light.
• It produces carbon dioxide (CO2) and water (H2O) as byproducts.
• The energy released can be used to power vehicles, generate electricity, or provide warmth.

Explanation

• The gas found in the greatest amount in the universe is Hydrogen.
• Making up 74% of all baryonic matter in the universe.

The elements that make up the universe, ranked in order of their abundance:

• Hydrogen
• Helium
• Oxygen
• Carbon
• Neon
• Iron
• Nitrogen
• Silicon
• Magnesium
• Sulfur