Explain a polymer in which some of the first h atoms

Assignment Help Chemistry

Reference no: EM13286408

Some watch dials are coated with a phosphor, like ZnS , and a polymer in which some of the first H atoms have been replaced by third H atoms, tritium. The phosphor emits light when struck by the beta particle from the tritium decay, causing the dials to glow in the dark. The half-life of tritium is 12.3 yr.

If the light given off is assumed to be directly proportional to the amount of tritium, by how many percents will a dial be dimmed in a watch that is 60 years old?

Reference no: EM13286408

Questions Cloud

The relationship between operating and financial leverage : Given the following statement, please indicate whether it is true or false, and why: "The relationship between operating and financial leverage is additive rather than multiplicative"

Explain the percentage deprotonation of the cation : A 9.1 g sample of C6H5NH3Cl is dissolved in water to make 346 mL of solution. Determine the percentage deprotonation of the cation.

What is the vertical height between the two climbers : A rock climber throws a small first aid kit to another climber who is higher up the mountain. What is the vertical height between the two climbers

How step responses of the two systems are identical : Consider the step responses of two different imaging systems, one with a circular aperture of diameter 2ω and the second with a square aperture of width 2ω, with one edge of the aperture parallel with the edge of the step.

Explain a polymer in which some of the first h atoms : Some watch dials are coated with a phosphor, like ZnS , and a polymer in which some of the first H atoms have been replaced by third H atoms, tritium.

Compute the electric field inside the dielectric : A parallel plate capacitor is connected to a battery. The space between the plates is filled with air. Find the electric field inside the dielectric

What is the cost of equity from retained earnings : Scanlon Inc.'s CFO hired you as a consultant to help her estimate the cost of capital. You have been provided with the following data: rRF = 4.10%; RPM = 5.25%; and b = 1.30. Based on the CAPM approach, what is the cost of equity from retained ear..

Derive the transfer function for a system with an function : Derive the transfer function for a system with an function u(t) and an ouput function x(t) described by the following differential equation:d^3x/dt^3+5d^2x/dt^2+17dx/dt+13=d^2u/dt^2+5du/dt+6

Determine the kinetic energy of the asteroid : At some point in its orbit, our asteroid is moving with a speed of 20 kilometers per second. Determine the kinetic energy of the asteroid

User Account

All Pages