C is the answer I took a test with the same answer
Answer:
Nitrate NO3
here's your answer, hope it helps you
Rounded to 1 significant figure, 25 m would go to 30. This is because 0 isn't significant, so the 3 is the only significant figure.
M/V=D
16.52/2.26=D
Density=6.86 g/cm^3