Mass Spectrometry ( Working Principle )

We can use this to do mathematical conversions to determine mass, volume, and number of atoms or molecules in a given substance. For example let’s check out this video to convert moles methane (CH4) to grams of methane. http://www.sciencegeek.net/Chemistry/Video/Unit4/GMV2.shtml

Scientists use an instrument called a spectrometer to quantitatively determine the amount of light absorbed by a solution. The primary inner parts of a typical spectrometer are described below. The spectrometer has a light source that emits white light containing a vast mixture of different wavelengths of electromagnetic radiation. The wavelength of interest is then selected using a monochromator (“mono” meaning one and “chromate” meaning color) and an additional exit slit. The separation of white light into different colors (wavelengths) is known as diffraction. The selected light then reaches the sample and depending on how the light interacts with the chemical compound of interest, some of the light is absorbed and some passes straight through. By comparing the amount of light entering the sample (P0) with the amount of light reaching the detector (P), the spectrometer is able to tell how much light is absorbed by the sample.

The fastest growing sport in America is lacrosse, and in order to play lacrosse, it is important to first understand the physics of the game. Lacrosse players around the world use physics while playing without even thinking about it. With no knowledge of physics, it would be pretty difficult to master the fastest game on two feet. One of the worlds greatest scientist, Isaac Newton, established three laws dealing with physics, and using these laws will make it possible for a lacrosse player to understand what he or she needs to do in order to throw a ball. Newtons first law deals with inertia, his second law deals with the relationship between mass, acceleration and force, and his third law deals with opposite reactions. When talking about lacrosse, it is essential to cover Newton’s first law, his second law, and his third law in order to understand the physics behind throwing a lacrosse ball. .

During this lab I learned how to convert the mass of a compound to the number of moles and then to the number of molecules, I also learned how to determine the concentration of a

Newton's third law states for every action there is an equal and opposite reaction. When throwing a lacrosse ball, the stretch in the netted pocket and the motion of the ball counteracts the force put into swinging the stick (http://www.livestrong.com/article/487887-the-physics-behind-throwing-a-lacrosse-ball/).

Turning the wheel to avoid the deer may result in a worse accident with another car, or cause the car to spin out of control resulting a in much more serious crash” (“Deer Accident Statistics”).

To begin, we formulated a method in which each unknown substance and compound were compared to find their molar relationships. In the experiment we calculated the molar mass of every compound by determining the amount of moles per gram in each element using the periodic table and then added them together. We then

2. The blue and green vectors move in opposite directions as the red ball slows down.

The objective of this lab was to learn the principle of affinity chromatography by isolating a carbohydrate-binding protein from an extract of jack bean meal.

The main objective of this experiment is to carry out qualitative analysis to identify metal cations in unknown solution 1.

     Liquid chromatography is an analytical technique that is useful for separating ions or molecules that are dissolved in a liquid phase. If the sample solution is in contact

by, F=P/Dt. By increasing the time over which you decelerate the ball, you lessen the force (Bill Willis 2001). This increase of ‘stopping” time will make it easier to catch and control the ball.

Negative lift is created by front and rear wings on race cars and by ground effects and spoilers on the average sports car. Most negative lift is used to fight inertia as a car rounds a turn. Inertia is the tendency of an object to remain in the same state of motion (Murphy 77). When a car rounds a turn at high speeds it often needs more force than it’s weight to resist the car’s tendency to keep traveling straight. The increased downforce puts more weight on the tires helping the tires grip the road.

tires and the road surface. A vehicle may skid forward in a straight line or it may

When a bowler bowls with a hook ball, they are taking advantage of friction. A hook ball is when the ball goes about two-thirds of the way down the lane before curving into the pins. Don't bowl against people who do this, they are usually very good. The lanes are oiled, producing a small coefficient of kinetic friction. Therefore, it takes a long time and a lot of torque on the ball to cause it to curve into the pins. The ball accelerates to the left or right as it catches what little friction it can.