The terms α particle, β particle, γ ray and X ray need to be defined. Concept introduction: α particles or α rays are made up of positively charged particles which are deflected away from a positively charged plate. This is emitted by radioactive substances. β particles or β rays are made up of electrons which are deflected away from a negatively charged plate. This is emitted by radioactive substances. γ rays are of high energy. They have no charge. Therefore they are unaffected by external magnetic or electric field. This is emitted by radioactive substances. X rays are produced when cathode rays are pointed towards glass or metal. X rays have high energy to penetrate matter. X rays are not deflected by electric or magnetic fields, which tells that X rays do not have charged particles.

Question

Using the conditions of spontaneity to deduce the signs of AH and AS Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions A This reaction is always spontaneous, but proceeds slower at temperatures above 120. °C. ΔΗ is (pick one) AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous except above 117. °C. AS is (pick one) ΔΗ is (pick one) This reaction is slower below 20. °C than C above. AS is |(pick one) ? 18 Ar 1

Answer 1

Question

Chapter 2, Problem 2.3QP

Interpretation Introduction

Interpretation:

The terms α particle, β particle, γ ray and X ray need to be defined.

Concept introduction:

α particles or α rays are made up of positively charged particles which are deflected away from a positively charged plate. This is emitted by radioactive substances.

β particles or β rays are made up of electrons which are deflected away from a negatively charged plate. This is emitted by radioactive substances.

γ rays are of high energy. They have no charge. Therefore they are unaffected by external magnetic or electric field. This is emitted by radioactive substances.

X rays are produced when cathode rays are pointed towards glass or metal. X rays have high energy to penetrate matter. X rays are not deflected by electric or magnetic fields, which tells that X rays do not have charged particles.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Students have asked these similar questions

Using the conditions of spontaneity to deduce the signs of AH and AS Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions A This reaction is always spontaneous, but proceeds slower at temperatures above 120. °C. ΔΗ is (pick one) AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous except above 117. °C. AS is (pick one) ΔΗ is (pick one) This reaction is slower below 20. °C than C above. AS is |(pick one) ? 18 Ar 1

Calculating the pH at equivalence of a titration Try Again Your answer is incorrect. 0/5 a A chemist titrates 70.0 mL of a 0.7089 M hydrocyanic acid (HCN) solution with 0.4574M KOH solution at 25 °C. Calculate the pH at equivalence. The pK of hydrocyanic acid is 9.21. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added. pH = 11.43] G 00. 18 Ar B•

Biological Macromolecules Naming and drawing the products of aldose oxidation and reduction aw a Fischer projection of the molecule that would produce L-ribonic acid if it were subjected to mildly oxidizing reaction conditions. Click and drag to start drawing a structure. X AP ‡ 1/5 Naor Explanation Check McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibil