# Question #8ef20

##### 1 Answer

Sep 20, 2017

#### 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 *grams* in order to have *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.