Answer:
Explanation:
%error= error/actual density x100
0.050/0.890 x100
=5.62%
Answer:
The concentration of nitrate ion
is 0.033 M.
Explanation:

1 mole of
= 3 mole 
Let
= 3y
then according to above reaction,
= y
= 0.10 M (given)
= ?
3y = 0.10 M

y = 0.033 M
So ,concentration of
= y = 0.033 M
Answer:
C
Explanation:
When a chemical substance gets in contact with an individuals eye in a laboratory, there is an area called the eye wash station that is used for washing off these substances. This station is important because when a chemical substance enters tour eye(s) you need to wash it off within 15 minutes after the injury has occurred.