When a counterfeit detection pen is used on an authentic bill, what color does it turn?
a. Pale blue
b. Pale yellow
c. Blue-black
d. Pale pink

If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons