It depends on the type of dog but i would use pounds
<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>
This has only only three sig figs because it is 546.000 the zeros are just place holders so thus meaning they are not significant. It is just another way to write 546 because in that number there is also 3 sig figs. They are just trying to throw you off. Just watch out because if the example is 540 then it is just two significant digits, and it were to be 540. then it be three cause that "." makes the zero significant. <span />
It’s the measure of spaces between objects. It affects groundwater infiltration by having more water fill the spaces between it. For example, is you have bigger rocks the spaces between it are bigger therefore the groundwater infiltration rate is faster. If the rocks are smaller, they are tightly packed and it’s not easy for groundwater infiltration.
Answer:
only 3
Explanation:
probably 4 too, I'm not sure