The number of chemical changes is to be determined. Concept introduction: The change that takes place only in state or appearance and not in the composition is known as physical change. It brings change in physical properties only. The change that takes place in the composition is known as chemical change. It changes physical as well as chemical properties of a substance.

Question

Want to see the full answer?

Answer 1

Question

Chapter 1, Problem 1.71P

(a)

Interpretation Introduction

Interpretation:

The number of chemical changes is to be determined.

Concept introduction:

The change that takes place only in state or appearance and not in the composition is known as physical change. It brings change in physical properties only.

The change that takes place in the composition is known as chemical change. It changes physical as well as chemical properties of a substance.

(b)

Interpretation Introduction

Interpretation:

The number of physical changes is to be determined.

Concept introduction:

The change that takes place only in state or appearance and not in the composition is known as physical change. It brings change in physical properties only.

The change that takes place in the composition is known as chemical change. It changes physical as well as chemical properties of a substance.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Photochemical smog is formed in part by the action of light on nitrogen dioxide. The wavelength of radiation absorbed by NO2 in this reaction is 197 nm.(a) Draw the Lewis structure of NO2 and sketch its π molecular orbitals.(b) When 1.56 mJ of energy is absorbed by 3.0 L of air at 20 °C and 0.91 atm, all the NO2 molecules in this sample dissociate by the reaction shown. Assume that each absorbed photon leads to the dissociation (into NO and O) of one NO2 molecule. What is the proportion, in parts per million, of NO2 molecules in this sample? Assume that the sample behaves ideally.

Correct each molecule in the drawing area below so that it has the skeletal ("line") structure it would have if it were dissolved in a 0.1 M aqueous solution of HCI. If there are no changes to be made, check the No changes box under the drawing area. No changes. HO Explanation Check NH, 2 W O :□ G ©2025 M unter Accessibility

An expression for the root mean square velocity, vrms, of a gas was derived. Using Maxwell’s velocity distribution, one can also calculate the mean velocity and the most probable velocity (mp) of a collection of molecules. The equations used for these two quantities are vmean=(8RT/πM)1/2 and vmp=(2RT/M)1/2 These values have a fixed relationship to each other.(a) Arrange these three quantities in order of increasing magnitude.(b) Show that the relative magnitudes are independent of the molar mass of the gas.(c) Use the smallest velocity as a reference for establishing the order of magnitude and determine the relationship between the larger and smaller values.