Answer:
I believe the answer is II and III
Explanation:
I'm not sure if III is right cause I cannot read the last word but I think it's OK.
Hope this helped :)
<span>Sodium
chloride, NaCl, sample are usually used in many laboratory testings and
experiments. The mass required for samples are usually just below 10 g. The
most accurate readings for this mass is through which there are 2 decimal
places. Thus, the highest number of significant figures that can be reported for such is only
4. </span>
Given :
Normal atom.
To Find :
The ratio of protons to electrons in all normal atoms.
Solution :
Here normal atom means neutral atoms i.e atoms whose charge is zero.
Atom charge is zero when number of proton are equal to number of electrons.
So,
Therefore, the ratio of protons to electrons in all normal atoms is 1.
Hence, this is the required solution.
The answer is b, the moon is smaller and has less gravity. hope this helps