A chemist adds 240.0mL of a 1.5 x 10^-4 mol/L magnesium flouride (MgF2) solution to a reaction flask. Calculate the micromoles of magnesium fluoride the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

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

Calculate the number of moles of ethane in 100 grams

What natural processes produce large quantities of co2