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
Brilliant_brown [7]
3 years ago
12

Which of the following statements about energy and trophic levels is not true? a. The amount of available energy decreases at ea

ch higher trophic level. b. The energy conversion efficiency decreases at higher trophic levels. c. The net production of energy is higher at lower trophic levels. d. None of the above
Chemistry
2 answers:
Maru [420]3 years ago
6 0

D. None of the Above

Zarrin [17]3 years ago
4 0
The correct answer is d
You might be interested in
In the following reaction, how many liters of oxygen produce 560 liters of
saw5 [17]

The balanced chemical reaction will be:

CH4 + 2O2 → CO2 + 2H2O

We are given the amount of carbon dioxide to produce from the reaction. This will be our starting point.

 

560 L CH4 ( 1 mol CH4/ 22.4 L CH4 ) (2 mol O2/ 1 mol CH4 ) ( 22.4 L O2 / 1 mol <span>O2</span><span>) = 1120 L O2</span>

7 0
3 years ago
Read 2 more answers
Heisenberg's uncertainty principle tells us that _____. heisenberg's uncertainty principle tells us that _____. the de broglie w
Alexandra [31]

Based on Heisenberg's uncertainty principle, the position and velocity of a particle cannot be determined simultaneously with accuracy.

In other words, Heisenberg's uncertainty principle states that the more accurately we know the position of a particle the less accurately we can know its velocity. Mathematically it is given as:

Δx.mΔv >= h/2π

where: Δx = uncertainty in position

m = mass

Δv = uncertainty in velocity

h = plancks constant

   


3 0
4 years ago
Read 2 more answers
(a) Consider the reaction of hydrogen sulfide with methane, given below:
Burka [1]

Answer:

a. H2S(g)/t = 1.48 mol/s

CS2(g)/t = 0.740mol/s

H2(g)/t = 2.96mol/s

b. Ptot /t = 981torr/min

Explanation:

a. Based on the reaction:

CH4(g) + 2 H2S(g) → CS2(g) + 4 H2(g)

<em>1 mole of CH4 reacts with 2 moles of H2S producing 1 mole of CS2 and 4 moles of 4H2</em>

<em />

If CH4 decreases at the rate of 0.740mol/s, H2S decreases twice faster, that is 0.740mol/s = 1.48 mol/s

CS2 is produced with the same rate of CH4 because 1 mole of CH4 produce 1 mole of CS2 = 0.740mol/s

The H2 is produced four times faster than CH4 is decreased, that is:

0.740mol/s * 4 = 2.96mol/s

b. With the reaction:

2 NH3(g) → N2(g) + 3 H2(g)

2 moles of ammonia are consumed whereas 1 mole of N2 and 3 moles of H2 are produced.

That means 2 moles of gas are consumed and 4 moles of gas are produced.

If the NH3 decreases at a rate of 327torr/min, the gases are produced in a rate twice faster. That is 327torr/min*2 =

654torr/min

The rate of change of the total pressure is rate of reactants + rate of products:

654torr/min + 327torr/min =

981torr/min

6 0
4 years ago
The area of a rectangle is 50 m2<br> If the height is 4 m, what is the<br> base?
Oliga [24]

Area = height × base

50 = 4 × base

Thus

base = 50/4

Base = 12.5 m

6 0
3 years ago
Read 2 more answers
Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom ch3och3.
kvv77 [185]
The electron geometry is tetrahedral and the molecular geometry is tetrahedral. If a molecule of CH3OCH3 is to be drawn, the two carbons would have four single bonds and the middle O would have two single bonds and the two lone pairs. Molecular geometry does not consider the lone pairs as bonds like in electron domain geometry. However, since the carbons do not contain any lone pairs, its electrons domain and molecular geometry will be the same. Therefore; Both carbons are tetrahedral for electron domain geometry and molecular geometries. The O is tetrahedral for the electron domain geometry and bent for molecular geometry.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which functional group is found in methanol?
    8·2 answers
  • True or False. An element's creativity is determined by the number of protons found in an atom of the element.
    12·1 answer
  • The specific heat of gasoline is 2.22 J/g•°C. How much heat would it take to raise 35.0 G of gasoline to 3.00°C?
    6·1 answer
  • The reaction A + B ⟶ C + D rate = k [ A ] [ B ] 2 A+B⟶C+Drate=k[A][B]2 has an initial rate of 0.0640 M / s. 0.0640 M/s. What wil
    9·1 answer
  • According to atomic theory:
    7·1 answer
  • Which of the following liquids has the highest surface tension? water oil bromine mercury
    13·2 answers
  • What is the relationship between pressure and temperature?<br> PLEASEEE HELPPP!!!!!
    13·2 answers
  • What makes fraternal twins fraternal on a cellular level
    15·1 answer
  • Which statement accurately describes the reactants of a reaction? new substances that are present at the end of a reaction subst
    13·2 answers
  • What is a salt in chemistry
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!