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Oliga [24]
3 years ago
6

Please draw the resonance structure for this compound indicating formal charges and lone pairs

Chemistry
1 answer:
ikadub [295]3 years ago
8 0

Here are the resonance contributors I found.

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All modern fertilizers use PO43- as a source of phosphorus. Use your knowledge of the old methods to determine the moles of phos
tamaranim1 [39]

Answer:

The answer is 0.023 moles of phosphorus

Explanation:

The 15-15-15 fertilizer is a fertilizer of great versatility, made with nitrogen, phosphorus and potassium, which makes it one of the fertilizers most used for fertilizer in the sowing plant, thus covering the crop requirements from planting. .

This fertilizer consists of 14.25% phosphorus pentoxide (P2O5). Therefore, we have to remove 14.25% at 10 grams of 15-15-15 fertilizer to calculate the moles of phosphorus. As follows:

Grams of P2O5 = 10 g x 0.1425 = 1.425 g

We calculate the molecular weight of phosphorus. We use the periodic table:

Phosphorus molecular weight = 2 x 30.97 = 61.94 g/mol

Now we calculate the moles of phosphorus in the fertilizer:

Phosphorus moles = 1,425 g/61.94 g/mol = 0.023 moles

8 0
2 years ago
Why can the geologic record be analyzed by looking at different rock layers?
nikklg [1K]

Answer:B

Explanation:According to the law of superposition, sedimentary and volcanic rock layers are deposited on top of each other. They harden over time to become a solidified (competent) rock column, that may be intruded by igneous rocks and disrupted by tectonic events.

6 0
3 years ago
Read 2 more answers
CaCO2=CaO + CO₂<br> How do I balance this equation?
7nadin3 [17]

Answer:

2CaO + 2CO2 → 2CaCO2 + O2 is right

4 0
2 years ago
Read 2 more answers
Những oixt nào sau đây Na2O CO2 ZnO N2O5, oxit nào tác dụng đc với<br> a.H2O b.HNO3 c.KOH
MrRissso [65]
???????????????????????
5 0
3 years ago
Read 2 more answers
What fraction of the enzymes will be active at ph=4.07 explain?
Ratling [72]
PH is the scale of measurement to check either the solution is acidic or basic. if the pH value is greater than 7, the solution is towards basicity and if the pH value is less than 7, the solution is towards acidity.
pKa is the dissociation constant and it is used to describe the change in pH value, when pKa is equal to pH: 50% of the ionizable group is protonated and 50% of the enzymes will be active.
So 50% of the enzymes will be active.
8 0
3 years ago
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