⚠️⚠️⚠️NEED HELP FAST⚠️⚠️⚠️Looking at the model above, one can conclude that A While quartz and glass are both extended structures made of smaller
subunits, quartz is also a crystal but glass is not
B While quartz and glass are both extended structures made of smaller
subunits, glass is also a crystal but quartz is not
C While quartz and glass are both crystals, quartz is also an extended
structure made of smaller subunits but glass is not.
D. While quartz and glass are both crystals, glass is also an extended
structure made of smaller subunits but quartz is not.

Write two balanced equations 1. dissolving of solid sodium hydroxide in water 2. the reaction of sodium hydroxide solution with hydrochloric acid

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.