What crystal system could have angles of 90degrees , 90degrees , and 67degrees with axes measuring 2.4 mm, 2.9 mm, and 5.5 mm?

What happens when light is scattered?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

How many grams of mgbr2 are needed to produce 75g or metal?