Answer:
Mg, Sc, Ca
Explanation:
To figure out increasing atomic radii, we use Periodic Trends applied to the Elements of the Periodic Table to help us out. We know that the trend for atomic radii is increasing left and down. Since Ca is the furthest down and left of the 3, it has the largest atomic radius. Since Sc is next element to Ca, it would be the 2nd largest atomic radius of the 3. Since Mg is above Ca, it has the smallest atomic radius of the 3.
<span>No, the battery does not need to be recharged.
The balanced reaction is:
NaOH + H2SO4 ==> Na2SO4 + H2O
So for each mole of H2SO4, one mole of NaOH is needed. So let's determine the number of moles of NaOH we used:
0.03126 L * 0.621 mol/L = 0.01941246 mol
So we now know that 0.01941246 moles of H2SO4 was present in the sample. And since molarity is defined as moles per liter, we can divide the number of moles we had by the number of liters to get molarity. So:
0.01941246 / 0.002 = 9.706 M.
This molarity is way too high to be reasonable. So let's do a sanity check on the original measured quantities. Our original sample is 2.00 ml and we titrated with 31.26 ml or 31.26/2 = 15.63 times as much base. So the molarity should be that value times the molarity of the base, which is 15.63 * 0.621 = 9.706 which matches the original calculated figure.
The conclusion is that the battery does not need to be recharged. If anything, it's over charged. Also, it's highly likely that this problem has a typo and that the figures given are incorrect. Please check your original problem before using this as your answer.</span>
Answer:
Since the water is heavier, it displaces the lighter ice,
Explanation:
hope that helps
U gotta know the atom numbers of each all 161/100=m/…. Well we have to know the capacity of CCl4 to do this question how many moles do we have ? Let’s say 1 okay then m will be 1.61 After finding it we are gonna add 79.35g
79.35+1.61=80.96 hope that it helped ;)