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3 years ago

Give an example of a predator-prey relationship. Then, identify the predator and prey.

2 answers:

7 0

One example of a predator prey relationship would be a a shark and a fish. The shark is the predator and the fish is the prey. The predator hunts for the prey.

lord [1]3 years ago

5 0

Another example is bird and worm. The bird is the predator and the worm is the prey.

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if 10 ml of acetone (60) is diluted with water to a total solution volume of 200 ml, what is the percent by volume of acetone in

sergey [27]

Answer:

Explanation:

Given parameters:

Volume of original acetone before dilution = 10ml

Volume of diluted solution = 200ml

Unknown:

Percent volume of acetone in the solution = ?

Solution:

To find the percent volume of acetone in the diluted solution, use the expression below;

Percent volume of acetone = $\frac{volume of original acetone}{diluted volume} x 100$

Insert the parameters and solve;

Percent volume of acetone = $\frac{10}{200}$ x 100 = 5%

6 0

3 years ago

A balloon is filled with 0.250 mole of air at 35°C. If the volume of the balloon is 6.23 liters, what is the absolute pressure o

ruslelena [56]

Answer:

102.807 kPa

Explanation:

There are some assumptions to be made in the answer. The air inside the balloon acts as an ideal gas at a given temperature conditions.

Using the combined ideal gas equation.

$PV = nRT\\$

P= absolute pressure of air inside the balloon.

V= volume of air inside the balloon (6.23 L= 6.23 * 10⁻³ m³)

n= moles of gas(air). (0.250 mol)

R= Universal gas constant ( 8.314 J / mol·K)

T= Temperature in Kelvin

T= 35 + 273.15 = 308.15 K

So, $P = \frac{nRT}{V}$

$P = \frac{0.250 * 8.314 * 308.15}{6.23 * 10^{-3} }$

P= 102.807 * 10³ Pa

P= 102.807 kPa

3 0

3 years ago

Read 2 more answers

Which best describes a compound such as sodium chloride?

finlep [7]

Answer:

It s a pure substance.

Explanation:

Can only be separated into its different elements by chemical means because it is connected by a chemical bond.

4 0

3 years ago

Which statement about the sun's energy is correct?

vagabundo [1.1K]

Answer:

C. A part of it is absorbed by atmospheric gases.

Explanation:

brainiest plz

3 0

3 years ago

Read 2 more answers

Guys please help me...

valentina_108 [34]

Answer:

On the farm there are 70 chickens.

Explanation:

We can directly work out the number of ducks from the given number of pigs, with the ratio of ducks to pigs:

36 pigs * $\frac{5Ducks}{9Pigs}$ = 20 ducks

Then we work out the number of chickens, using the ration of chickens to ducks:

20 ducks * $\frac{7Chickens}{2Ducks}$ = 70 chickens

If on the farm there are 36 pigs, there are 70 chickens as well.

7 0

3 years ago