What is the mass of 7.2 moles of titanium to the nearest tenth?

1 Answer
Aug 17, 2016

#"344.6 g"#


The first thing to do here is to figure out the mass of one mole of titanium, #"Ti"#.

To do that, grab a periodic table and look for titanium. You'll find this metal located in period 4, group 4.


Notice that titanium has a molar mass equal to #"47.867 g mol"^(-1)#, which means that one mole of titanium has a mass of #"47.867 g"#.

Now that you know the mass of one mole of titanium, you can calculate the mass of #7.2# moles by using the metal's molar mass as a conversion factor

#7.2 color(red)(cancel(color(black)("moles Ti"))) * "47.867 g"/(1color(red)(cancel(color(black)("mole Ti")))) = "344.6424 g"#

The last thing to do here is round this off to the nearest tenth, which means leaving the answer rounded to one decimal place

#color(green)(|bar(ul(color(white)(a/a)color(black)("mass of 7.2 moles Ti " = " 344.6 g")color(white)(a/a)|)))#