For reaction
2 A + B ------------> 2 C
Rate = K [ A ]² [ B ]
<span> the order with respect to A is 2 and the order overall is 3.
</span>
hope this helps!
<u>Answer:</u>
Sodium atom is larger than Magnesium atom.
<u>Explanation:</u>
Looking at the electronic configurations of Sodium and Magnesium:
,
we can see that they both have their valence electrons in the 3rd shell.
But because Magnesium has a higher nuclear charge of +12 because of its 12 protons than that of Sodium's +11, the nucleus of Magnesium attracts its outer electrons more strongly than Sodium does. This makes the Magnesium atom smaller.
Answer:
93 g of
are needed to produce 150 g of 
Explanation:
1. Writhe the balanced equation given by the problem:

2. Then use the stoichiometry of the reaction to calculate the mass of
that is needed to produce 150g of
:
It is important to take in account the molar mass of the
and the
for the calculations.
Molar mass of the
= 58.3g
Molar mass of the
= 18g

<span>C10H12N2O
First, lookup the atomic weights of C, H, N, and O
Atomic weight of Carbon = 12.0107
Atomic weight of Hydrogen = 1.00794
Atomic weight of Nitrogen = 14.0067
Atomic weight of Oxygen = 15.999
Now determine the ratio of atoms of each element by dividing their mass percentage by their atomic weights.
Carbon = 68.2 / 12.0107 = 5.67827
Hydrogen = 6.86 / 1.00794 = 6.805961
Nitrogen = 15.9 / 14.0067 = 1.135171
Oxygen = 9.08 / 15.999 = 0.567535
Now determine a simple integer ratio of small integers that closely approximates the ratio of relative molar amounts.
5.67827 : 6.805961 : 1.135171 : 0.567535
Going to first divide all values by 0.567535 (picked because it's the smallest in the above ratios) getting
10.005 : 11.992 : 2.000 : 1
These numbers are all extremely close to integers so it looks like the empirical formula for Serotonin is C10H12N2O
Let's compute the molar mass of the empirical formula
10 * 12.0107 + 12 * 1.00794 + 2 * 14.0067 + 15.999 = 176.2 g/mol
Since that calculated molar mass matches the desired target, we're done. If the calculated mass was smaller, or the desired mass was larger (like 352 g/mol) we would have multiplied the number of atoms by the appropriate factor. But that's not needed, so the molecular formula for Serotonin is C10H12N2O</span>