Answer:
12 grams
Explanation:
For any radioactive substance
the amount of substance left after n half life is given by = 
where x the original amount of substance.
____________________________________________
Half life of isotope Np-238 = 2 days
total no of days = 6
no of half life =total no of days/Half life of isotope Np-238 = 6/2 = 3
thus,
for our problem n = 3
initial amount of Np-238 = 96 grams
thus,
the amount of substance left after 3 half life = 96/2^3 = 96/8 = 12 grams.
Thus, 12 grams will be left after six days.
There is one calcium, one carbon atom, and three oxygen atoms. Therefore, there are 5 atoms in CaCo3
1,2 I think it’s two tho I’m not sure
It is a) a non metal.
Remember: most metals are malleable (the opposite of brittle) and conduct electricity well.
NaCHO would increase the ph of the solution
NaBr and KCl are neutral substances that cannot change the pH of the formic acid solution.
Since HCl is a potent acid, adding more of it will cause the pH of the solution to decrease even more. Regarding NaCHO, it stands for sodium citrate, which is a weak base. NaCHO can thereby increase the pH of the formic acid solution.
<h3>What is Acid and base ?</h3>
There are many different ways to define acids and bases. According to the bronsted-Lowry definition, a base is a proton acceptor, whereas an acid is a proton giver. According to Lewis, an acid is an electron pair acceptor, whereas a base is an electron pair giver.
Learn more about Acid and base here:
brainly.com/question/27915098
#SPJ4
