Explanation

• Bases are substances that exhibit a soapy or slippery texture.
• They are often characterized by their ability to form hydroxide ions (OH-) in aqueous solutions.

Explanation

• Common Salt (NaCl) is a compound, not a mixture.
• It is a pure substance made up of sodium and chlorine atoms in a fixed ratio.

Explanation

Ludwig Boltzmann's ideas were not widely accepted during his time, which led to feelings of disillusionment and depression, ultimately resulting in him taking his own life.

Explanation

When Cl₂ is removed, the equilibrium will favor the formation of PCl₅ to restore balance, shifting to the left to compensate for the change.

Explanation

Ions have have noble gas electronic configuration' was suggested by Kossel.

Explanation

The coordination number and oxidation state of cobalt in the given complex Na4[Co(C2O4)3] are respectively 6 and +3.

Explanation

In a forward reaction, the reactants form products, as represented from left to right in a chemical equation.

Explanation

Hydrogen sulphide gas is a naturally occurring chemical.

The gas has a characteristic rotten egg odor at low concentrations.

Hydrogen sulphide gas (H 2 S) is a colorless gas

Hydrogen sulphide is produced by reacting a metal sulphide (Ferrous sulphide) with a dilute acid (Sulphuric acid).

The element responsible for the rotten egg-like smell of Hydrogen sulphide is Sulphur (S).

Explanation

• An atom typically has an equal number of electrons and protons.
• They are equal in number to the atomic number (Z) of the element.
• This number is unique to each element and determines the properties of the element.

Explanation

To calculate the total energy consumed, you can use the following approximate energy values for macronutrients:

• Carbohydrates: 4 kcal per gram
• Proteins: 4 kcal per gram
• Fats: 9 kcal per gram

Now, let's calculate the energy from each macronutrient: