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3 years ago

Which of the following will occur soon after a population of prey increases slightly in size?

Chemistry

2 answers:

jeka943 years ago

5 0

It is E. because the predators will have slightly more meals with their prey slightly increasing population.

Salsk061 [2.6K]3 years ago

4 0

Answer: Option E

Explanation:

The role of nature is that predators eat prey. They serve as food for the predators. If there is a increase in the size of the prey population then there will be increase in the size of predators.

Example: The lions feed on the rabbit for the its energy needs. If the size of rabbits will increase then the there will be a slight increase in the population of the lions as there will be a proper supply of food for them.

hence, the correct answer is option E

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An aqueous solution contains 0.30 M nitrous acid. One Liter of this solution could be converted into a buffer by the addition of

yulyashka [42]

Answer:

A. 0.31 mol NaNO2

Explanation:

Buffer solutions are the solutions that resist changes in pH on addition of small amount of acid or base.

Buffer solutions usually contain the mixture of a weak acid and its salt, or a weak base and its salt.

Among the options listed in the question, only NaNO2 is the salt formed from the nitrous acid.

3 0

3 years ago

Which of the following molecules or ions is polar? (20 POINTS)

taurus [48]

For NO3- molecule(fig.1)

1. Bonds are created between elements with different electronegativity, most bonds would be polar. Bonds in NO3 are polar.

2. In the geometry of the molecule bond polarities cancel out each other (since it is a vector) so NO3- ion molecule is non polar

3. Nitrate (NO3-)ion geometry would be trigonal planar

For CCl4 molecule(fig.2)

1. Bonds are created between elements with different electronegativity, most bonds would be polar. Bonds in CCl4 are polar.

2. It is a completely symmetrical molecule.

3.Carbon is the centre of CCl4 have four covalent bonds and it has no lone pairs. They are all equidistant the C-Cl bond polarities cancel out. So CCl4 molecule is non polar

For NH3 molecule(fig.3)

1. Bonds are created between elements with different electronegativity, most bonds would be polar. Bonds in NH3 molecule are polar.

2. it has a pyramidal structure.

3. the individual N-H bond dipoles don't cancel out. This dipole moment for the molecule indicates that NH3 is a polar molecule

For SF6 molecule(fig.4)

1.F is more electronegative than S. So the bonds are polar.

2. The symmetry of the molecule is symmetrical so that the dipole moments of bonds cancel correspond so the molecule is non-polar.

3. it has octahedral structure

3 0

4 years ago

Calculate the answer. Express it in scientific notation. All answers should have the correct number of significant figures.

beks73 [17]

(1.632) (4.0 x 104)

= (1.632)(416)

=678.912

6.8* 10^2.

Not sure if it's the right sig figs.

8 0

3 years ago

Read 2 more answers

The equation of 3times x is 38

MrMuchimi

Answer is 38/3 or 12.67

3x=38

x=38/3

therefore answer is the one mentioned above

4 0

3 years ago

You place a balloon in a closed vacuum chamber at standard temperature and pressure (STP). You decrease the chamber temperature

leva [86]

It reduces in size by half.

This is due to Charles's law, which states that the absolute temperature and volume of a gas are directly proportional, given that pressure is kept constant. Therefore, if the absolute temperature is halved, the volume of the gas will also halve.

5 0

3 years ago