1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kramer
2 years ago
12

imagine that you were an ecologist need to estimate the number of spiders in Abeling 500 m² of a rainforest please explain the p

rocedure you would follow to get your estimate including hypothetical data
Chemistry
1 answer:
Reptile [31]2 years ago
5 0

I tried asking my sister for this but she doesn't get it neither do I

You might be interested in
Draw a mechanism for the first step of the reaction between methyllithium (CH3Li) and acetone. Then answer the two multiple choi
pogonyaev

Answer:

See the attached image

Explanation:

The first step is the production of the <u>carboanion</u> in the CH_3Li compound. We will get the <u>negative charge</u> on the methyl group and the <u>positive charge</u> in the Li atom.

Then the carboanion can <u>attack the acetone</u>. The double bond of the oxo group would <u>delocalized</u> upon the oxygen, generating a positive charge in the carbon that can be attacked by the carboanion formaiting a <u>new C-C bond</u>.

8 0
3 years ago
What is the name of Earth’s natural satellite?
Dafna11 [192]

Answer:

the moon is the earths natural satellite.

Explanation:

A natural satellite is in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body (or sometimes another natural satellite). Natural satellites are often colloquially referred to as moons, a derivation from the Moon of Earth.

4 0
2 years ago
A gas within a piston–cylinder assembly undergoes an isothermal process at 400 K during which the change in entropy is −0.3 kJ/K
Karolina [17]

Answer:

W = -120 KJ

Explanation:

Since the piston–cylinder assembly undergoes an isothermal process, then the temperature is constant.

Thus; T1 = T2 = 400K

change in entropy; ΔS = −0.3 kJ/K

Formula for change in entropy is written as;

ΔS = Q/T

Where Q is amount of heat transferred.

Thus;

Q = ΔS × T

Q = -0.3 × 400

Q = -120 KJ

From the first law of thermodynamics, we can find the workdone from;

Q = ΔU + W

Where;

ΔU is Change in the internal energy

W = Work done

Now, since it's an ideal gas model, the change in internal energy is expressed as;

ΔU = m•C_v•ΔT

Where;

m is mass

C_v is heat capacity at constant volume

ΔT is change in temperature

Now, since it's an isothermal process where temperature is constant, then;

ΔT = T2 - T1 = 0

Thus;

ΔU = m•C_v•ΔT = 0

ΔU = 0

From earlier;

Q = ΔU + W

Thus;

-120 = 0+ W

W = -120 KJ

8 0
3 years ago
The maximum number of electrons in a valence shell is: <br> a. 2 <br> b. 8 <br> c. 18 <br> d. 32
vodomira [7]
B. 8

Although it may seem that transition metals would have more than 8 valence electrons, they in fact do not.
5 0
3 years ago
Read 2 more answers
What are the monomers of nucleus acids
kakasveta [241]

Answer:

The term nucleic acid is the overall name for DNA and RNA.

Explanation:

They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base.

6 0
3 years ago
Read 2 more answers
Other questions:
  • 100 K = _____ -173°C 0°C 100°C 373°C
    14·2 answers
  • Describe all of the van der Waals forces that exist between molecules of water.
    10·1 answer
  • Why are scientist surprised to find coal in artic
    15·2 answers
  • Muuuuction<br> 1. The lithosphere is broken into separate sections called
    6·1 answer
  • A sample of 14.5 g of sodium bicarbonate (NaHCO3) was dissolved in 100 ml of water in a coffee-cup calorimeter with no lid by th
    9·1 answer
  • Across<br> 1. the alkali metal in Period 4
    9·1 answer
  • At a certain temperature the vapor pressure of pure acetic acid HCH3CO2 is measured to be 226.torr. Suppose a solution is prepar
    5·1 answer
  • Which pair of factors affects the force of gravity between objects
    11·2 answers
  • After you completed your serial dilution of the copper chloride waste, you are curious how these different concentrations of cop
    15·1 answer
  • A student makes two mixtures, both made of the same substances. What must be true of the two mixtures? A Both mixtures have the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!