Explanation

A mass spectrometer separates ions based on their mass-to-charge ratio (M/E).

Ions with different masses or charges will follow different paths in the magnetic field, allowing separation.

Explanation

• A heterogeneous mixture is a mixture in which the components have different physical properties, such as color, texture, or phase (solid, liquid, or gas).
• In a heterogeneous mixture, the components are not uniformly distributed, and you can often see the individual components.

Explanation

• When sand is added to water, it does not dissolve, but instead forms a mixture where the sand particles settle at the bottom of the container.
• This type of mixture is called a suspension, where the particles of the solute (sand) do not dissolve in the solvent (water) and instead remain suspended.

Explanation

• Group VIA (also known as Group 16) elements have six electrons in their valence shell.
• Oxygen (O) is a member of this group, and its atomic number is 8.
• The electronic configuration of oxygen is 1s2 2s2 2p4, which shows that it has six electrons in its valence shell (two in the 2s orbital and four in the 2p orbitals).

Explanation

Isotopes of an element have the same number of protons.

Explanation

 The limiting reactant (or limiting reagent) is the reactant that controls the amount of product formed in a chemical reaction

Because it is the substance that is completely consumed first, thereby limiting the extent of the reaction. 

Explanation

An equilibrium constant expression can be applied to an aqueous solution of table salt. 

Explanation:

An equilibrium constant expression is used for reversible reactions where the concentrations of reactants and products reach a constant state.

Table salt (sodium chloride) dissociates into Na+ and Cl- ions in water, and this dissociation can be considered a reversible reaction. Thus, the equilibrium constant can be applied to this system. 

Explanation

Lactic acid is not an amino acid; glutamic acid, aspartic acid, and glycine are all amino acids. 

Lactic acid:

This is an organic compound involved in energy metabolism, but it does not have the characteristic structure of an amino acid. 

Explanation

In an amino acid, a proton transfers from the carboxylic group (–COOH) to the amino group (–NH₂), forming a dipolar ion.

This ion with both positive and negative charges but overall neutral is called a zwitter ion.

Explanation

Nitric oxide (NO) is a highly reactive gas with a short atmospheric lifetime.

Its residence time is typically a few hours, due to rapid chemical reactions with other atmospheric compounds.