A student used an electronic balance to measure the mass of an empty 1.7-mL microcentrifuge tube and found that its mass was 1.025 g. She then pipetted a volume of
80.0 mL ethyl alcohol into the microcentrifuge tube and measured the final mass (1.080 g).
If the density of ethyl alcohol is 0.791 g/mL, what is the student's percent error?

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

cutt.ly/wzUiVyK

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

not too sure but maybe in the hot springs.