A diffraction grating is to be used to find the wavelength of the ...

[jilianpiloj]

A diffraction grating is to be used to find the wavelength of the emission spectrum of a gas. The grating spacing is not known, but light of a known wavelength of 632.8 nm is deflected by 43.2 in the second order by this grating.
 
  Light of the wavelength to be measured is deflected by 34.9 in the second order. What is the wavelength of the light that is to be measured?

Question 2

In the winter Vermonters make a tasty treat called sugar on snow in which they pour boiled-down maple syrup onto a scoop of clean fresh snow.
 
  As the syrup hits the snow it forms a delicious taffy. Which of the following changes are involved in the making of sugar on snow?
  A) Boiling down the maple syrup involves the evaporation of water.
  B) The syrup warms the snow causing it to melt while the syrup becomes more viscous.
  C) As the maple syrup is boiled the sugar within the syrup begins to caramelize, which is an example of a chemical change.
  D) All of the above changes are involved in the making of sugar on snow.

[bblaney]

Answer to Question 1

529 nm

Answer to Question 2

Answer: D

[jilianpiloj]

Excellent

[raenoj]

Gracias!