All categories

3 years ago

Which is the most important reason to continue efforts to preserve coral reefs

1 answer:

6 0

Coral reefs support a wide variety of organisms. They are very sensitive and are a main part in the ocean life.
a.
Coral reefs are a valuable commodity in the aquarium business.
b.
Coral reefs support a wide variety of organisms.
c.
Coral reefs are one of the oldest ecosystems.
d.
Coral reefs are important for marine recreation.

Its B Coral reefs support a wide variety of organisms.

You might be interested in

Large sharks eat many other marine life animals. The sharks and the animals they eat are all part of which level of organization

Sladkaya [172]

Answer:

the answer is ecosystem i believe.

8 0

3 years ago

Read 2 more answers

Observation on the movement of the object marble when rolled?

Travka [436]

Hello can we study chemistry?

4 0

3 years ago

A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is filled with concentrated su

ivanzaharov [21]

Answer:

1.84 g/cm³

Explanation:

A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. The mass of water is:

m(water) = 593.63 g - 78.23 g = 515.4 g

The density of water is 1.00 g/cm³. The volume of water (and the flask) is:

515.4 g × (1 cm³/1.00 g) = 515 cm³

When the same flask is filled with concentrated sulfuric acid, H₂SO₄, its mass is 1026.57 g. The mass of H₂SO₄ is:

m(H₂SO₄) = 1026.57 g - 78.23 g = 948.34 g

948.34 g of sulfuric acid occupy a volume of 515 cm³. The density of sulfuric acid is:

ρ = 948.34 g / 515 cm³ = 1.84 g/cm³

3 0

4 years ago

Read 2 more answers

I’ll mark u BRAINIEST if it CORRECT! This is one attempt so don’t guess!

Fiesta28 [93]

Answer:

If Methyl orange is used as only indicator, it's used in the scenario " strong acid to weak base"

Explanation:

A reaction between a weak acid and weak base, gives not strong enough changes in pH. The neutralization reaction (might) happen. But it would be difficult to get the titration curves. This means no indicator is suitable.

A strong acid to a weak base : The equivalence point for titrations between strong acids and weak bases occurs somewhere upward of pH=3-4, this depends on how strong the acid and the base.

⇒ A good indicator for this scenario is Methyl orange, because it changes colour between a pH of 3.1 - 4.4. We notice that the equivalence point is more or less in the middle of this range. This makes the indicator an useful one !

A weak acid to a strong base : The equivalence point for titrations between weak acids and strong bases occurs somewhere upward of pH=7, this depends on how strong the acid and the base.

⇒ A good indicator for this scenario is phenolphthalein, because it changes colour between a pH of roughly 8 - 10. We notice that the equivalence point is more or less in the middle of this range. This makes the indicator an useful one !

⇒Methyl orange has an equivalence point, more or less at pH=4, ( so will change colour there). This is quite away from where the equivalence point of a weak acid with a strong base.

HCl with sodium carbonate: Since this reaction has 2 end points (one at pH = 8.5 and one at pH =3.5). Methyl orange has range between pH = 3.1 and 4.4 ; phenolphthalein has a range between 8.3 and 10. Since it's colourless below pH 8, it does not interfer with the methyl orange.

For this scenario methyl orange is ONE of the indicators that can be used. As only indicator, it does not have a full spectrum of colour change. So the otherindicator that should be used is phenolphthalein.

If Methyl orange is used as only indicator, it's used in the scenario " strong acid to weak base"

4 0

3 years ago

when an individual goes without eating for a day, his or her blood sugar remains about the same throughout the day this relative

Len [333]

The answer is homeostatic control

5 0

4 years ago