What was noticed about the shape of coastlines by sailors as early as the sixteenth century?

The West coastline of North America and East coastline of South America looked like they fit together

The East coastline of Asia and West coastline of North American looked like they fit together

The West coastline of Africa and East coastline of Australia looked like they fit together

The East coastline of South America and West coastline of Africa looked like they fit together

How many atoms of oxygen are contained in 160 grams of n2o3

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged