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tino4ka555 [31]
3 years ago
15

Which are characteristics of medusae?

Chemistry
2 answers:
slavikrds [6]3 years ago
6 0

Answer:

Are sessile, have tentacles, mouths open downwards

Explanation:

Medusae may have many tentacles with which they catch their prey. Sometimes, people bathing in the ocean are touched by a medusa. Their tentacles are long and thin and covered in venomous stinging cells (known as nematocysts). They inject poison which immobilizes small fish. People who are stung should seek medical attention. There have been some deaths after severe medusa stings.

zvonat [6]3 years ago
6 0

Answer:

C. swim freely, have tentacles, mouths open downward

Explanation:

I just took the test, i hope it helps you.

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You have 180 g of radium that takes up 36 cm ^ 3 of space if you were to cut it in half and have only 90 g
Leno4ka [110]

If you were to cut the radium  in half and have only 90 g, it will take up 18 cm³.

<h3>What is density?</h3>

The density of an object is the ratio of mass to volume of object.

Density = mass/volume

volume = mass/density

at a constant density, the volume of an object is proportional to its mass.

From the question, you have 180 g of radium that takes up 36 cm ^ 3 of space if you were to cut it in half and have only 90 g, the new mass will take the following volume.

180 g = 36 cm³

90 g =  ?

= (90 x 36) / 180

= 18 cm³

Thus, if you were to cut the radium  in half and have only 90 g, it will take up 18 cm³.

Learn more about radium here: brainly.com/question/23781489

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6 0
1 year ago
For the reversible, one-step reaction A+B&lt;----&gt;C+D, the forward rate constant is 52.4 /mol*h and the rate constant for the
Fantom [35]

Answer:

—-—1———————-s

7 0
3 years ago
Name the following compound:
Marrrta [24]

Answer:

3-methylhexane

Explanation:

The compound is 6 carbon atoms long, a hexane. It branches with a methyl group on the third carbon group.

This makes it a 3-methylhexane

5 0
3 years ago
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Verdich [7]

Answer:

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Explanation:

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Orbitals overlap in directions which ensure a maximum overlap of atomic orbitals in the covalent bond.

6 0
3 years ago
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Which property of table salt is also a property of other ionic compounds
Svet_ta [14]
Most likely it’s crystalline structure, which makes it small granules that are soluble in water. Most, if not all, ionic compounds are salts. And salts dissolve in water.

Hope that’s correct
3 0
3 years ago
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