Question

Question #8ef20

Answer 1

`"7.85 g"`

Explanation:

All you have to do here is to use the fact that

`color(blue)(ul(color(black)("1 dag = 10 g")))`

In other words, you need `10` grams in order to have `1` decagram.

To convert your sample to grams, set up this conversion factor by adding decagrams as the denominator and grams as the numerator.

You will end up with

`0.785 color(red)(cancel(color(black)("dag"))) * "10 g"/(1color(red)(cancel(color(black)("dag")))) = color(darkgreen)(ul(color(black)("7.85 g")))`

The answer must retain the number of sig figs you have for your measurement.