Why did the laser beam move when the magnet was placed near it

A laser shined through a diffraction grating with lines that are 1/500 mm apart creates a spectra on a screen. The distance from the center bar to the first side bar is 66 mm. The distance from the diffraction grating to the first side bar is 187 mm.

The reaction for the combustion of benzene is: 2C6H6 + 15O2 → 12 CO2 + 6 H2O. How moles of O2 are required to produce 130 g CO2 in the presence of excess C6H6? a. 2.36 b. 2.95 c. 3.69 d. 5.80

Zeros that act as are not significant

What is the molarity of a solution made by dissolving 21.2 g of a sodium hydroxide (NaOH) in enough water to make 7.92 L of solution?

How many moles are in 0.456 g of chlorine

How do you balance __Mg + __HCl - - > __MgCl2 + ___ H2

How many grams of methane, CH4 are produced from the complete reaction of 5.15 moles of carbon monoxide, CO

If you change the state of something, say, liquid to solid, is it a physical or chemical change?

What type of calorimeter would be best to use if you wanted to measure the heat that is released when gasoline is burned?

Tina has a sample of gaseous water at a temperature of 400 C and a pressure of 4 atm. If Tina increases the pressure to 200 atm, will the gaseous water liquefy? Why or why not?