The correct answer would b C
Answer:
d) Make it flexible
Step-by-step explanation:
Raw hides dry out to form a hard material that can decay with an offensive smell when they become wet.
Tanning converts the protein of the raw hide into a stable material that will stay flexible and not decompose when it gets wet.
a) is <em>wrong</em>. The purpose of tanning is to soften the leather.
b) is <em>wrong</em>. You smooth the leather manually with fine sandpaper.
c) is <em>wrong</em>. Tanning does not impart water resistance. It prevents the leather from putrefying when it does get wet.
Answer:
C4H10
Explanation:
you already written it :)
Answer:
nitrogen
Explanation:
The stoichiometry of the reaction says that
and
react 3:1 to form 2 moles of
, so, if you have 3,5 moles of H, which is equal to 1,75 moles of
, and 5 moles of N, which are equal to 2,5 moles of
. only
=0.583 moles of
, will react, leaving <em>1.917 moles of </em>
<em>unreacted</em>, and forming 0.583*2=1.166 moles of 