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n200080 [17]
3 years ago
8

Several different species of birds, including heron, flamingos, and skimmers, can all successfully feed along the coast because

they get their food from waters of varying depths. This is an example of _____.
intraspecies competition
resource partitioning
commensalism
edge effects
Chemistry
1 answer:
alexandr402 [8]3 years ago
3 0

The correct answer is resource partitioning.  

The concept of resource partitioning is applicable in the branch of ecology. It signifies towards the procedure by which natural selection mediates competing species into distinct patterns of different niches or resource utilization.  

When the species differentiate a niche to prevent competition for food resources, it is known as resource partitioning. At certain times, the competition is among the species, known as interspecific competition, and at sometimes it is among the individuals of the similar species, that is, intraspecific competition.  


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80g of sodium hydroxide reacts with excess sulfuric acid to produce 142g of sodium sulfate. What mass of sodium hydroxide would
Ostrovityanka [42]

Answer:

Mass of sodium hydroxide needed  = 28.2 g

Explanation:

Given data:

Mass of sodium hydroxide = 80 g

Mass of sodium sulfate produced = 142 g

Mass of sodium hydroxide needed = ?

Mass of sodium sulfate produced = 50 g

Solution:

Mass of sodium sulfate produced / Mass of sodium hydroxide = Mass of sodium sulfate produced / x

142 g/ 80 g = 50 g / x

x = 50 g × 80 g / 142 g

x =4000 g/ 142

x = 28.2 g

6 0
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What are two effects of too much exposure to radiation?
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You can develop acute radiation syndrome or skin cancer.
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3 years ago
Based on the results from this experiment, predict whether some of the following combinations of compounds would precipitate or
iren [92.7K]

Answer:

* No precipitate: LiOH(aq)+NaCl(aq)\rightarrow LiCl(aq)+NaOH(aq)

* Precipitate: 3BaCl_2(aq) +2Na_3PO_4(aq) \rightarrow Ba_3(PO_4)_2(s)+6NaCl(aq)

* Precipitate: MgSO_4(aq)+2KOH(aq)\rightarrow Mg(OH)_2(s)+K_2SO_4(aq)

Explanation:

Hello!

In this case, since these all are double displacement reactions, in which the cations and anions are exchanged, we can write the resulting chemical reactions as follows:

a. LiOH and NaCl: No precipitate is formed since LiOH and NaOH are both largely soluble in water:

LiOH(aq)+NaCl(aq)\rightarrow LiCl(aq)+NaOH(aq)

b. BaCl2 and Na3PO4: barium phosphate precipitate is formed because it has a large molar mass which makes it insoluble in water:

3BaCl_2(aq) +2Na_3PO_4(aq) \rightarrow Ba_3(PO_4)_2(s)+6NaCl(aq)

c. MgSO4 and KOH: magnesium hydroxide "milky" precipitate is formed because it is not soluble in water:

MgSO_4(aq)+2KOH(aq)\rightarrow Mg(OH)_2(s)+K_2SO_4(aq)

Moreover, we can relate the solubility of a substance by considering its polarity, molar mass and nature; usually, heavy substances tend to be insoluble in water as well as nonpolar compounds.

Best regards!

6 0
2 years ago
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IrinaVladis [17]

A unit of ppm has an acronym of parts per million. The equivalent units of ppm is therefore mg/L and mg/kg. So the ppm is:

mass Ca+ = 1.3 g = 1300 mg

 

ppm = 1300 mg / 3100 kg

<span>ppm = 0.42 ppm</span>

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3 years ago
Which of these changes would be classified as producing a chemical change a. freezing water b. mixing salt and water to make a s
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Answer:

Option B , Option C and Option D

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