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maxonik [38]
2 years ago
14

NEED HELP NOW!! Scientists study two kinds of jellyfish. One lives at the surface of the ocean; the other lives in the deep regi

on of the ocean. Which adaptations would you be more likely to find in the jellyfish that lives in the deeper waters of the ocean?
A: Develop fins and a muscular tail

B: Adapt to lower temperatures

C: Develop photosynthesis

D: Develop bioluminescence
Chemistry
1 answer:
bagirrra123 [75]2 years ago
7 0
It’s D False. I pretty sure it’s not good enough but it’s not going there anymore lol I can’t yeyeuiiw
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The wavelength of a given region of the electromagnetic spectrum ranges from 1 x 10-11 - 1 x 10-8 meters. Which waves are found
Fittoniya [83]
The correct answer is option B. X-rays are the waves found in the electromagnetic spectrum at a wavelength of 1x10^-11 - 1x10^-8 m and frequencies of 3x10^16 to 3x10^19 Hz. These waves penetrate easily through certain materials which made them usefule in the field of medicine.
3 0
3 years ago
Read 2 more answers
Which characteristic best explains the difference in melting behavior of covalent substances and ionic substances? Ionic substan
AleksandrR [38]

Answer:

Covalent substances have weaker intermolecular attractions.

Explanation:

i just took the test

3 0
2 years ago
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A roller coaster is accelerating at 10m/s² before it comes to an abrupt stop at the end of the ride. The mass of the roller coas
alexgriva [62]

Answer:

<h2>9000 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 900 × 10

We have the final answer as

<h3>9000 N</h3>

Hope this helps you

8 0
3 years ago
Find the molar mass of vitamin A (C20H30O).
agasfer [191]
Just add up the molar masses of each element.

Molar mass of C:  12.011 g/mol
The equation says C20, which means there are 20 carbon atoms in each molecule of Vitamin A.  So, we multiply 12.011 by 20 to get 240.22 g/mol carbon.

Molar mass of H:  1.0079 g/mol
The equation says C30, which means there are 30 hydrogen atoms in each molecule of Vitamin A. So, we multiply 1.0079 by 30 to get 30.237 g/mol hydrogen.

Molar mass of O: 15.999 g/mol
The equation says O without a number, which means there is only one oxygen atom in each molecule of Vitamin A.  So, we leave O at 15.999 g/mol.

Then, just add it up:
240.22 g/mol C + 30.237 g/mol H + 15.999 g/mol O = 286.456 g/mol C20H30O

So, the molar mass of Vitamin A, C20H30O, is approximately 286.5 g/mol.
3 0
3 years ago
What is the molarity of a solution that contains 15.0g of naoh per 500.0 ml of solution ​
VARVARA [1.3K]

Answer:

0.4 M

Explanation:

Molarity is defined as moles of solute, which in your case is sodium hydroxide,  

NaOH

, divided by liters of solution.

molarity

=

moles of solute

liters of solution

Notice that the problem provides you with the volume of the solution, but that the volume is expressed in milliliters,  

mL

.

Moreover, you don't have the number of moles of sodium hydroxide, you just have the mass in grams. So, your strategy here will be to

determine how many moles of sodium hydroxide you have in that many grams

convert the volume of the solution from milliliters to liters

So, to get the number of moles of solute, use sodium hydroxide's molar mass, which tells you what the mass of one mole of sodium hydroxide is.

7

g

⋅

1 mole NaOH

40.0

g

=

0.175 moles NaOH

The volume of the solution in liters will be

500

mL

⋅

1 L

1000

mL

=

0.5 L

Therefore, the molarity of the solution will be

c

=

n

V

c

=

0.175 moles

0.5 L

=

0.35 M

Rounded to one sig fig, the answer will be

c

=

0.4 M

8 0
3 years ago
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