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fomenos
3 years ago
14

After she explains commensalism to her friend, Hailey tries to think of an example of it. Which of the following is an example o

f commensalism?
fleas and and a dog

barnacles on a whale

a human and chicken pox

a bee and a flower
Chemistry
1 answer:
vampirchik [111]3 years ago
4 0

Answer:

bernacles on a while.

Explanation:

These crustaceans stick to the bodies of baleen whales during their larval stage, when they are still able to swim, and establish a commensal relationship with the mysticetes, since they neither harm nor benefit the host that hosts them, whom they will accompany throughout their lives. .

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Ammonium phosphate ((NH4)3 PO4) is an important ingredient to many fertilizers. It can be made by reacting phosphoric acid (H3 P
lara31 [8.8K]

Answer:

15.35 g of (NH₄)₃PO₄

Explanation:

First we need to look at the chemical reaction:

3 NH₃ + H₃PO₄ → (NH₄)₃PO₄

Now we calculate the number of moles of ammonia (NH₃):

number of moles = mass / molecular wight

number of moles = 5.24 / 17 = 0.308 moles of NH₃

Now from the chemical reaction we devise the following reasoning:

if         3 moles of NH₃ are produce 1 mole of (NH₄)₃PO₄

then   0.308 moles of NH₃ are produce X moles of (NH₄)₃PO₄

X = (0.308 × 1) / 3 = 0.103 moles of (NH₄)₃PO₄

mass = number of moles × molecular wight

mass = 0.103 × 149 = 15.35 g of (NH₄)₃PO₄

4 0
3 years ago
Select the property that is not a characteristic of an ideal recrystallization solvent.
dybincka [34]

Answer:

(C) The recrystallization solvent should be nonvolatile.

Explanation:

Recrystallization is the separation technique which is used to purify the solid compounds in their crystal or amorphous form.

Some properties follow the recrystallization process as:

The solids are more soluble in hot solvent as compared to the solubility in the cold solvent.

The solvent must have lower boiling point and can be volatile easily.

The solvent should not react with the compound.

The impurities must be soluble in the cool solvent, so that only the pure product crystallizes.

Hence, Answer - C which is not an ideal characteristic.

8 0
3 years ago
Plz help!!! This is timed!!!
pogonyaev
58.7 %

Please correct me if I’m wrong. :)
7 0
2 years ago
Which of the following elements is represented by the above graphic​
kolezko [41]

Answer:

Sulfur

Explanation:

Sulfur has 16 valence electrons, as shown in the diagram.

5 0
2 years ago
How many protons, neutrons, and electrons are in a neutral atom with the symbol 41Ca
Harlamova29_29 [7]
B  the atomic number is 20 and then you subtract atomic mass to find the neutrons
3 0
3 years ago
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