A. Strong Acid vs. Strong Base
<span>In determining significant figure, always remember the rules:
Zeros place in the beginning and end of a non-zero numbers are not significant
Zeros place in the middle of a non-zero numbers are considered significant.
Therefore, 340 438 grams has 6
significant figures.</span>
The number of electrons is 20. hope this helps
Density of boat =
=
= 0.88 g / cm³
Since the density of water is greater than the density of the boat ( 1 > 0.88) then that means,
the boat will NOT sink.B.
Because the last known passenger pigeon died, that would make the species extinct