question What is the product of the reaction between nitric acid HNO and calcium carbonate CaCO

Chemistry

What is the product of the reaction between nitric acid (HNO₃) and calcium carbonate (CaCO₃)?

A. Calcium nitrate and carbon dioxide
B. Nitrogen gas and water
C. Calcium nitrate and water
D. Carbon dioxide and calcium hydroxide

The reaction forms calcium nitrate and carbon dioxide as products.

What is the IUPAC name for CH₃COCH₂CH₃?

A. Acetone
B. Propanone
C. Butanone
D. Ethanal

The reaction between an acid and a metal produces:

A. Hydrogen gas
B. Oxygen gas
C. Carbon dioxide
D. Nitrogen gas

The shape of a molecule with an octahedral electron domain geometry is:

A. Octahedral
B. Linear
C. Tetrahedral
D. Square planar

The equation ΔG = ΔH - TΔS is related to which thermodynamic process?

A. Gibbs free energy
B. Enthalpy
C. Entropy
D. Internal energy

A reaction in which a compound gains electrons is known as:

A. Reduction
B. Oxidation
C. Hydrolysis
D. Esterification

The balanced chemical equation for the reaction between calcium carbonate (CaCO₃) and hydrochloric acid (HCl) is:

A. CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂
B. CaCO₃ + HCl → CaCl₂ + H₂O + CO₂
C. CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O
D. CaCO₃ + HCl → CaCl₂ + CO₂ + H₂O

What is the primary function of insulin in the human body?

A. Regulating blood glucose levels
B. Enhancing muscle growth
C. Stimulating bone formation
D. Increasing heart rate

The bond angle in a molecule with a tetrahedral shape is approximately:

A. 109.5°
B. 120°
C. 180°
D. 90°

The color of litmus paper turns ___________ in the presence of an acid.

A. Red
B. Blue
C. Green
D. Yellow

Which nucleic acid is involved in carrying the genetic code from the nucleus to the cytoplasm for protein synthesis?

A. mRNA (messenger RNA)
B. tRNA (transfer RNA)
C. rRNA (ribosomal RNA)
D. snRNA (small nuclear RNA)