The density of mercury metal is 13.6 g/mL. What is the mass 45 mL of the metal?

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Answer 1 · 2016-02-03T07:01:49

612gm

the mass of #1ml# is #13.6gm#
#:.#the mass of #45ml# is=#(13.6xx45)#gm
#=612gm#

Answer 2 · 2016-02-03T07:06:37

A good 600 grams.

Density, #rho# #=# #("Mass")/("Per unit volume")#. For chemists, usually the units are given as #g*mL^-1#

So, given that #rho# #=# #g/(mL)#; all we have to do is multiply the density by the volume to give the mass (i.e. #g# #=# #rhoxxmL)#:

#"Mass"# #=# #rhoxx"Volume"# #=# #13.6*gcancel(mL^-1)##xx45# #cancel(mL)# #=# #??g#