Calculate the number of moles in 3.99x10^24 molecules of chalk (calcium carbonate).

IF an Axonal Membrane transiently becomes very permeable to Na + ions then the membrane potential of the cell wall will approach:a. (+) 132 mVb. (+) 50 mVc. (-) 60 mVd. (+) 70 mVe. (-) 94 mV

What molality of pentane is obtained by dissolving 15 g pentane, c5h12, in 245.0 g hexane, c6h14?

What kind of molecule is table sugar? a. Monosaccharide c. Trisaccharide b. Disaccharide d. Octosaccharide

What system includes the living components of earth

Drum X is 12 full of oil and Drum Y, which has twice the capacity of Drum X, is 23 full of oil. If all of the oil in Drum X is poured into Drum Y, then Drum Y will be filled to what fraction of its capacity?

How do I convert 4,500mm to a m

A substance that permits the flow of electrons is a (n a. conductor b. insulator

The volume, in liters, of 538 g of CO2

9.86 x 10²⁸ O-atoms require what volume (L) N₂O₂ at STP?

What is a group of elements that form salts called