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MA_775_DIABLO [31]
3 years ago
14

In the food chain what might happen if all the frogs suddenly died off?

Chemistry
2 answers:
il63 [147K]3 years ago
7 0
The food chain will crash.
frosja888 [35]3 years ago
7 0
They die because theyre dead
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A solution is prepared by dissolving 91.7 g fructose in 545 g of water. Determine the mole fraction of fructose if the final vol
oee [108]

Answer:

Mole fraction = 0,0166

Explanation:

Mole fraction is defined as mole of a compound per total moles of the mixture. In the solution, the solute is fructose and the solvent is water. That means you need to find moles of fructose and moles of water.

The molecular mass of fructose is 180,16g/mol and mass of water is 18,02 g/mol. Using these values:

91,7g fructose × (1mol / 180,16g) = <em>0,509 moles of fructose</em>

545g water × (1mol / 18,02g) = <em>30,24 moles of water</em>

Thus, mole fraction of fructose is:

\frac{0,509 moles}{0,509mol + 30,24mol} = 0,0166

<em>Mole fraction = 0,0166</em>

I hope it helps!

5 0
3 years ago
Enter your answer in the provided box. the ph of a bicarbonate-carbonic acid buffer is 7.06. calculate the ratio of the concentr
Marina CMI [18]
The ratio would be 12.6 of carbon acid
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3 years ago
What is the mass of 3.0 x x times 10^23 atoms of neon?
Sladkaya [172]

Answer:

10.09 grams

Explanation:

First you need to know the number of moles you are dealing with.

If you know that each mole has 6.022x10²³ of something (in this case of atoms), you can divide 3x10²³ atoms of neons by 6.022x10²³ to obtain the number of moles.

You have 0.5 moles of Neon, so then by the periodic table, you see that the molar mass of neon is 20.18g/mol, so by each mole you have 20.18 grams of neon. Multiply 20.18 grams by 0.5 moles and you got 10.09 grams of Neon

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2 years ago
Formula for calculating pressure​
Anna35 [415]

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The formula for pressure is P = F/A, in which P is pressure, F is force, and A is area.

Explanation:

6 0
3 years ago
Can someone help please? :)
Leno4ka [110]

1) This is a definition.

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3) Neutrons = (mass number)-(atomic number), which are the top and bottom numbers, respectively.

4) Nuclear fusion involves combining two things together, which is only reflected by the last option.

5) This is a fact.

6) This is a fact.

7) This is a fact.

8) This is a fact.

9) The correct option is the explanation.

7 0
2 years ago
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