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
IgorC [24]
4 years ago
9

Which is a problem associated with the use of trees for biomass? I. Potential deforestation II. Burning fossil carbon III. Poten

tial soil erosion
Chemistry
1 answer:
BigorU [14]4 years ago
7 0

Answer:

Both Option (I) and Option (III)

Explanation:

Biomass is usually defined as those organic molecules that are obtained from plants and animals, in order to produce energy. It is a renewable resource. Some of the examples of biomass include wood, crop, animal fossil fuel.

A large number of trees are being cut down to construct these biomass energies such as woods. This results in the deforestation process where the forested areas are converted into empty dry soils. This results in the increasing rate of erosion because the prevailing wind and flowing water can easily carry away the topsoil and loses the fertility of the soil.

Thus, the correct answers are both options (I) and (III).

You might be interested in
Which compound can be used to preserve biological specimens?
Ksju [112]
<span>Biological specimens have been preserved in alcohol and formalin for many years.This could damage the specimen and change the colour of the fluid.Engineered fluids are now used as a substitute for formalin as it is a more sustainable medium..Novec fluids which are low in toxicity are also used.</span>
7 0
3 years ago
Read 2 more answers
Aqueous sulfuric acid reacts with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water. If 1.92 g of sodium
Oksana_A [137]

Answer:

The % yield is 27.0 %

Explanation:

<u>Step 1: </u>Data given

Mass of sulfuric acid = 4.9 grams

Mass of sodium hydroxide = 7.8 grams

Mass of sodium sulfate produced = 1.92 grams

Molar mass H2SO4 = 98.08 g/mol

Molar mass NaOH = 40 g/mol

Molar mass Na2SO4 = 142.04 g/mol

<u>Step 2: </u>The balanced equation

H2SO4 + 2NaOH → Na2SO4 + 2H2O

<u>Step 3</u>: Calculate moles H2SO4

Moles H2SO4 = Mass H2SO4 / Molar mass H2SO4

Moles H2SO4 = 4.9 grams / 98.08 g/mol =

Moles H2SO4 = 0.05 moles

<u>Step 4:</u> Calculate moles NaOH

Moles NaOH = 7.8 grams / 40 g/mol

Moles NaOH = 0.195 moles

<u>Step 5</u>: Calculate limiting reactant

For 1 mole H2SO4 consumed ,we need 2 moles NaOH to produce 1 mole Na2SO4 and 2 moles H2O

H2SO4 is the limiting reactant. It will completely be consumed (0.05 moles).

NaOH is in excess. There will react 2*0.05 = 0.1 moles

There will remain 0.195 -0.1 = 0.095 moles NaOH

<u>Step 6:</u> Calculate moles Na2SO4

For 1 mole H2SO4 consumed ,we need 2 moles NaOH to produce 1 mole Na2SO4

For 0.05 moles H2SO4, we have 0.05 moles Na2SO4

<u>Step 7:</u> Calculate mass of Na2SO4

Mass Na2SO4 = Moles Na2SO4 * Molar mass Na2SO4

Mass = 0.05 moles * 142.04 g/mol = 7.102

This is the theoretical yield

<u>Step 8:</u> Calculate the percent yield of Na2SO4

% yield = (actual yield / theoretical yield) * 100%

% yield = (1.92 /  7.102) *100% = 27.0 %

The % yield is 27.0 %

7 0
4 years ago
PLEASE HELP 30 POINTS
Bas_tet [7]

Answer:

Because the rock is irregularly shaped, you used the displacement  method to measure its volume.  You used  <u>calculations</u>  to indirectly find the <u>density</u>  of the objects.

PLZ Brainliest

8 0
3 years ago
How does a fire blanket work?​
Anika [276]

Answer:

Fire blankets are powerful pieces of equipment which work by cutting off the oxygen supply of a fire, thereby starving it of one of the three crucial elements it needs to survive and ultimately extinguishing it.

5 0
3 years ago
Read 2 more answers
Question 3 of 10
Keith_Richards [23]

Answer:D

Explanation:a pex

3 0
3 years ago
Read 2 more answers
Other questions:
  • What combines to form compounds? A. atoms of elements B. molecules C. minerals D. valences
    13·1 answer
  • What is the [H+] if the pH is 13.6?
    8·2 answers
  • A molecule whose ends have opposite electric charge is call a_?
    12·1 answer
  • Define what does phase is
    12·1 answer
  • What is the smallest to largest of Cell,atom,neutron,and electron
    9·1 answer
  • Elements that are anions
    5·1 answer
  • What does the backward arrow ( ← ) mean in a chemical equation?
    13·1 answer
  • A rubber ball contains .570 mL of gas at a pressure of 2.05 atm. What volume will the gas Couoh at 7.47 atm?
    10·1 answer
  • The question is 7th grade science theres a picture of the question. please help
    9·2 answers
  • If the reactants of wood when burning weigh 10 kgs, how much will the products weigh?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!