Answer:
C The water had adequate nitrogen and phosphorus, so it is likely iron limited.
Explanation:
Phytoplankton are single- cell organisms that live in oceans.
They require nitrogen, phosphorus and trace amount of iron to survive.
From the scientist's results after testing the water for nitrogen and phosphorus,there are reasonable amount of these elements.
Therefore insufficient iron in the water is the reason why he could find plenty phytoplankton in the ocean.
The Lewis structure of
Diimide (N₂H₂) is shown below.
In this molecule two Nitrogen atoms attached to each other through a
double bond are further attached to one one Hydrogen atom. Also, each Nitrogen atom carries one
non-binding electron pair (
Lone Pair) (Highlighted RED).
Result: Option-C (<span>each nitrogen has one nonbinding electron pair) is the correct answer.</span>
Answer:
6
Explanation:
You will see H6 and the H stands for helium and the 6 is how many of that atom is there
In order to see which species has the strongest dispersion forces, you need to calculate their molar mass, because the higher the molar mass, the stronger the dispersion forces.
Since E. C8H18 has the highest molar mass, its dispersion forces are also the strongest ones.
Answer:
Pd(O2C2H3)2
Explanation:
<u>Percentage composition of elements in the compound:</u>
Pd= 47.40%
O=28.50%
C=21.40%
H= 2.69%
<u>Molar mass of each element</u>
Pd= 106g/mol
O= 16g/mol
C= 12g/mol
H= 1g/mol
Step 1
Find the moles of each element in 100g sample using the formula
no. of moles(n)=mass/molar mass
<u>For Pd:</u> 47.40g/106g/mol
n= 0.447 moles
<u>For O:</u> 28.50/16
n= 1.78 moles
<u>For C:</u> 21.40/12
n= 1.783 moles
<u>For H:</u> 2.69/1
n= 2.69moles
Step 2
Now divide the no. of moles separately by the smallest number of moles. Smallest number of moles is <em>0.447</em>
Pd= 0.447/0.447
= 1
O= 1.78/0.447
= 3.9=4
C= 1.78/0.447
= 3.9=4
H= 2.69/0.447
= 6
Hence empirical formula is PdO4C4H6
The probable molecular formula is 