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3 years ago

What would happen if prey was removed from the food web need asap

2 answers:

7 0

If any animal was removed from the food web, the animals that it would prey on would overpopulate and the animals that hunted it would stave because it has nothing to feed on. Hope this answers your question.

Ray Of Light [21]3 years ago

3 0

If prey were to be removed from the food web, that would cause the predators of the prey to eventually die off.
I hope this helped! :-)

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If 507 g FeCl2 were used up in the reaction FeCl2 + 2NaOH Fe(OH)2(s) + 2NaCl, how many grams of NaCl would be made?

Ket [755]

Number of moles of FeCl2 used = mass/ molar mass
Number of moles = 507/126.751 = 4.
If one mole of Fe reacts with two moles of sodium
Then 4 moles of Fe produces 8 moles of sodium.
Number of moles of sodium = mass/molar mass
Molar mass of sodium chloride = 23 +35.5 = 58.5 g/mol
Hence mass = 8 * 58.5 = 468 g. Hence Option A.

6 0

3 years ago

It takes 281.7 kJ of energy to remove 1 mole of electrons from the atoms on the surface of lithium metal. If lithium metal is ir

Alex17521 [72]

Answer:

The maximum kinetic energy of electron is = 2.93 × $10^{-19}$ Joule

Explanation:

We know that total energy

$E = \frac{hc}{\lambda}$ ------------ (1)

Here h = plank's constant = 6.62 × $10^{-34}$ J s

c = speed of light = 3 × $10^{8}$ $\frac{m}{s}$

$\lambda$ = 261 nm = 261 × $10^{-9}$ m

Put all these values in equation (1) we get

E = 7.6 × $10^{-19}$ J

We know that

Total energy = Energy to remove an electron + K.E of electron

Energy to remove an electron = $\frac{281.7 (1000)}{(6.023)10^{23} }$

Energy to remove an electron = 4.67 × $10^{-19}$ J

K.E of electron = Total energy - Energy to remove an electron

K.E of electron = 7.6 × $10^{-19}$ - 4.67 × $10^{-19}$

K.E of electron = 2.93 × $10^{-19}$ Joule

Therefore the maximum kinetic energy of electron is = 2.93 × $10^{-19}$ Joule

3 0

4 years ago

16. Chemists can synthesize new materials using

Alex787 [66]

Answer:

Yes Concurred,but where is the question

8 0

3 years ago

you are heating a solution and recording its temperature every 2 min during an experiment. which is your independent variable an

Zepler [3.9K]

An independent variable is the variable you are changing in order to measure the dependent variable, which is what you are measuring.

In this example, the

independent variable: chemicals in solution
dependent variable: temperature of solution

7 0

3 years ago

Who Discovered the neutral subatomic particles called neutrons

irina1246 [14]

James CHadwick discovered the subatomic particles caled neutrons

5 0

3 years ago

Read 2 more answers