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
Lady bird [3.3K]
3 years ago
15

Luke and Sian want to plant a vegetable garden in their yard. A soil testing kit measures the soil pH at 5.0, but the lettuce th

ey want to plant does best at a pH of 6.5. Should they add an acid or a base to the soil to make it the optimum pH for growing lettuce?
Chemistry
1 answer:
dexar [7]3 years ago
4 0

Answer:

So, Luke and Sian has to increase the pH of the soil by adding base to it.

Explanation:

The pH is defined as the negative logarithm of the hydrogen ion concentration in their aqueous solution.

pH=-\log[H^+]

  • With increase in hydrogen ion concentration the pH value decreases.
  • With decrease in hydrogen ion concentration the pH value increases.

The pH of the soil after testing it on a kit comes out be 5.0, but they both need pH of the soil to 6.5.

Comparison of pH of soil:

  =  5.0 < 6.5

= High hydrogen ion concentration > High hydrogen ion concentration

So, Luke and Sian has to increase the pH of the soil by adding base .Doing so will decrease the hydrogen ion concentration in the soil (where as addition of acid lower the pH of soil).

You might be interested in
Wetlands help to prevent flooding. Please select the best answer from the choices provided T F
balu736 [363]
True, wetlands help to prevent flooding.
8 0
3 years ago
Read 2 more answers
Who discovered electron ???
Zanzabum

It was a Cambridge UK scientist in the early part of the 20 th century who discovered the electron. His name was J J Thompson.

5 0
3 years ago
Calcule la densidad del hidrógeno H2 en g/L a 327 mm Hg y 48ºc
tankabanditka [31]
<h3>The density of H₂ = 0.033 g/L</h3><h3>Further explanation</h3>

In general, the gas equation can be written  

\large {\boxed {\bold {PV = nRT}}}

where  

P = pressure, atm , N/m²

V = volume, liter  

n = number of moles  

R = gas constant = 0.082 l.atm / mol K (P= atm, v= liter),or 8,314 J/mol K (P=Pa or N/m², v= m³)

T = temperature, Kelvin  

n = N / No  

n = mole  

No = Avogadro number (6.02.10²³)  

n = m / MW

m = mass  

MW = molecular weight

For density , can be formulated :

\tt \rho=\dfrac{P\times MW}{R\times T}

P = 327 mmHg = 0,430263 atm

R = 0.082 L.atm / mol K

T = 48 ºC = 321.15 K

MW of H₂ =  2.015 g/mol

The density :

\rho=\dfrac{0,430263\times 2.015 }{0.082\times 321.15}\\\\\rho=0.033~g/L

4 0
2 years ago
Which type of energy refers to the sum of potential and kinetic energies in the particles of a substance?
Andru [333]

Thermal (heat) energy is ur answer mate

Hope it helps

5 0
3 years ago
Which of these is connected by three covalent bonds?
leonid [27]

Answer:

NH3

I GUESS

HOPE THIS HELPS U

6 0
2 years ago
Other questions:
  • A balloon filled with air has a volume of 4.24 liters at 23.00°
    6·2 answers
  • Arab cultures charted planets in the Dark Ages. Europeans helped establish the Sun-centered model of the solar system during the
    14·1 answer
  • How does the shape of an enzyme affect its function?
    6·2 answers
  • Enter the molecular equation representing aqueous nitric acid and aqueous ammonia reacting. express your answer as a balanced mo
    6·2 answers
  • What are the processes for the 3 types of weathering
    15·1 answer
  • 8.43g of CaCl2·2H2O is dissolved in 40.0g of H2O. What is the molality of the solution? (Note that the H2O in the CaCl2·2H2O mus
    6·2 answers
  • What increases OH ions​
    8·1 answer
  • How does adding a lone pair affect the position of existing atoms and lone pairs
    9·2 answers
  • Need help asap!!!!<br> will mark brainliest!!!
    9·1 answer
  • How many grams are in 2.5 moles of N2? <br><br> (2 decimal places)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!