Explain what is the change in energy

Assignment Help Chemistry

Reference no: EM13314260

What is the change in energy, Delta E, in kilojoules per mole of hydrogen atoms for an electron transition from n=9 to n=2 ? Express your answer in kilojoules per mole to three significant figures.

Reference no: EM13314260

Questions Cloud

Explain purpose and amount of reinforcing in concrete beams : Simply Supported Reinforced Concrete Beams - Explain the purpose and amount of reinforcing in concrete beams in relation to bending and shear and the concepts of under reinforcement, balanced reinforcement and over reinforcement.

What is theshear modulus of the sponge : A large sponge has forces of magnitude 12 N applied in oppositedirections to two opposite faces of area 42 cm^2. What is theshear modulus of the sponge

What will the lowest dissolved oxygen concentration : A wastewater is discharged to a stream with a reoxygenation constant of 0.5 day-1 and a velocity of 1 m/sec. The oxygen saturation concentration in the stream is 11 mg/L.

What are the dimensions of the image on the screen : The dimensions of the picture on a 35.0{\rm mm} color slide are x = 24.0{\rm mm} {\times}y = 36.0{\rm mm}. What are the dimensions of the image on the screen

Explain what is the change in energy : What is the change in energy, Delta E, in kilojoules per mole of hydrogen atoms for an electron transition from n=9 to n=2

Determine what force must apply at the ends to achieve : What couple moment does he exert. How much could he exert if he moved his hands to the ends so that his hands are 254 inches apart. What force must he apply at the ends to achieve the same couple moments as when he held his hands 18 inches apart.

Explain the heat generated from combustion goes to heat : Assume each of the following: the fuel has an average formula of C7H16; 15% of the heat generated from combustion goes to heat the water (the rest is lost to the surroundings); the density of the fuel is 0.78 g/mL; the initial temperature of the w..

Find optimal amount of water that will be drawn from well : The town needs a total of 2 mgd. The capacity of well 1 is 5 million gallons per day, and that of well 2 is 10 mgd. Using calculus (hint: calculus with substitution), determine the optimal amount of water that will be drawn from each well

Explain what is the molarity of the base : 43.8 ml of 0.170 M HCl is needed to neutralize 37.6 ml of Ba(OH)2 solution. What is the molarity of the base. 2 HCl + Ba(OH)2 =BaCl2 +H20

User Account

All Pages