<span>Dr. Garcia should compare fly cells to human cells.
</span>
Answer:
It usually leads to more confidence in the results
D. Experiments provided new evidence about the atom, I think, sorry if I’m wrong
1) <span> 2.7 g water + 6,6 g carbon dioxide </span>→<span> 9.3 g carbonic acid.
According to </span><span>principle of mass conservation mass of reactants and products are the same after chemical reactio. 2,7 g + 6,6 g = 9,3 g.
2) </span><span>32.0 g sodium hydroxide + 16.0 g hydrofluoric acid --> 14,4 g water + 33.6 g sodium fluoride.
m(water) = 32 g + 16 g - 33,6 g.
3) </span><span>0.60 g calcium carbonate + 0.48 g sodium hydroxide --> 0,63 g sodium carbonate + 0.45 g calcium.
m(sodium carbonate) = 0,6 g + 0,48 g - 0,45 g.
4) </span><span>0.53 g sodium hydroxide + 0.37 g carbon dioxide --> 0,9 g sodium hydrogen carbonate.
m(sodium hydrogen carbonate) = 0,53 g + 0,37 g = 0,9 g.</span>
4 S^3 = Ksp
<span>S ={ 1/4 Ksp}^1/3 </span>
<span>= [ 6.4/4 X 10^-9]^1/3 </span>
<span>= (1.6^1/3)*10^-3 </span>
<span>= 1.1696 x 10^-3 ANSWER</span>