1. A laser beam is reflected off a plane mirror, as shown below. What must be the measure of the angle of incidence of the beam?

Write two balanced equations 1. dissolving of solid sodium hydroxide in water 2. the reaction of sodium hydroxide solution with hydrochloric acid

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?

Using data from seismic waves, geologists have learned that earth’s interior is made up of several