6. Hydrogen Emission Spectrum: Hydrogen gas (in a tube) is activated with electricity and begins to glow la gas light bulb). Then the light given off passes through a prism-like paper which separates the light
into specific individual wavelengths that is colors. The resulting lines of color are called the emission
spectrum of an element. In Hydrogen's emission spectrum, there is a line of light with 690 nm
(nanometers) wavelength and a line of light at 480 nm (we consider only these two for simplicity). One
of these is due to an electron jumping from n=4 to n=1 and another is due to an electron jumping from
n=2 to n=1. Use the above info, the picture of Hydrogen emission spectrum on pg.292 and the diagram
on pg.288 to answer the following:
Wavelenght 690 nm HAS
(color) DUE TO e-transition from n= to n=
Wavelength: 480 nm HAS
(color) DUE TO e transition from n= to n =

Classify each statement about effective nuclear charge, zeff, as true or false.

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3

Is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance