The two step equation of conversion of marble (calcium carbonate or limestone) to gypsum dehydrate should be determined. Concept Introduction: Due to access pollution in urban areas or metro cities, there is an increased level of air pollution. The most commonly found gas is SO 2 - sulphur dioxide in air that is responsible for acid rain or acidic deposition. Acid rain or acidic deposition can be of two types: dry and wet. Dry deposition is normally occurring due to reaction of sulphur dioxide or nitrous oxides with calcium carbonate present in walls of buildings like monuments. Wet rain is seen when the sulfuric or nitrous acids formed in atmosphere and falls on ground along with rain, fog, snow or hail.

Question

A laser emits a line at 632.8 nm. If the cavity is 12 cm long, how many modes oscillate in the cavity? How long does it take for the radiation to travel the entire cavity? What is the frequency difference between 2 consecutive modes?(refractive index of the medium n = 1).

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Question

Chapter 6, Problem 73P

Interpretation Introduction

Interpretation:

The two step equation of conversion of marble (calcium carbonate or limestone) to gypsum dehydrate should be determined.

Concept Introduction:

Due to access pollution in urban areas or metro cities, there is an increased level of air pollution. The most commonly found gas is SO2 - sulphur dioxide in air that is responsible for acid rain or acidic deposition. Acid rain or acidic deposition can be of two types: dry and wet.

Dry deposition is normally occurring due to reaction of sulphur dioxide or nitrous oxides with calcium carbonate present in walls of buildings like monuments. Wet rain is seen when the sulfuric or nitrous acids formed in atmosphere and falls on ground along with rain, fog, snow or hail.

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