bleaching powder that will produce 400cm3 of chlorine at 25°c and a pressure of 1.20 × 10^5 nm-2 (O=16,Xl=35,ca=40, 1 mole of gas occupies 22.4dm3 and a pressure of 1.20 × 10^5 nm-2 × 10^5)

Apackage contains 1.33 lb of ground round. if there’s 29% fat, how many grams of fat are in the round? i got 175 g but the textbook says the answer is 91 g of fat. how?

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy