The object represented by this graph is moving Position vs Time
12
O away from the origin a constant velocity
O away from the origin at a decreasing velocity
O toward the ongin at a constant velocity
toward the origin at a decreasing velocity
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8
Position (m)
6
4
2.
0
1
4
5
2 3
Time (s)
1) Intro

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf   

Hbr dissociates to form h+ and br-ca(oh)2 dissociates to form ca2+ and 2oh-the h+ and oh- react to form waterassuming the reactants are dissolved in water, the net reaction is h+ + oh- —> h2oif you’re asked to show all components of the reaction, the complete reaction is 2hbr + ca(oh)2 —> cabr2 + 2h2o