How many moles are in 204 g of Niobui A 1.74moles NI

B 2.20moles NI

C 3.00 moles NI

D 4.50 moles Ni

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

0.09 moles of sodium sulfate in 12 ml of solution

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