Question #8ef20

1 Answer
Sep 20, 2017

Answer:

#"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.