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
lina2011 [118]
3 years ago
5

A Student Formulated A Hypothesis That Cotton Will Grow Larger Bolls ( Pods ) If Magnesium Is Added To The Soil. The Student Has

Two Experimental Fields Of Cotton, One With Magnesium And One Without. Which Data Should Be Collected To Support This Hypothesis?
(a) Height Of The Cotton Plants In Both Fields

(b) Diameter of the cotton bolls in both fields

(c) Length of the growing season in both fields

(d) Color of the cotton bolls in both fields
Chemistry
1 answer:
Sati [7]3 years ago
4 0
Hypothesis is a smart guess that you make on the result of your experiment. You make this even before doing the experiment through inferential analysis. If the hypothesis you made was that, cotton will grow larger balls, then in the experiment, you should measure the cotton boll's size. The size should be in terms of diameter. So, the answer is b.
You might be interested in
Calculate the ΔG for the following system. Then state if the system is spontaneous or not spontaneous. ΔH = 147 kJ ΔS = -67.0 J/
lbvjy [14]

Answer:

ΔG for the given system is 28.421 kJ. The system is non spontaneous.

Explanation:

ΔH = 147 kJ =147,000 J= Enthalpy of the system

ΔS = -67.0 J/K = Entropy change

T = 149 °C = 422.15 K = Temperature of the system

((T)°C=273.15 +T K)

ΔG = Gibbs free energy ?

The Gibbs free energy 's expression is given by:

ΔG = ΔH  - T ΔS

  • ΔG > 0 , non spontaneous
  • ΔG < 0, spontaneous

\Delta G^o=147,000 J-422.15 K\times (-67.0)

ΔG = 28,421 J = 28.421 kJ

Since, value of Gibbs free energy is positive this means that reaction is non spontaneous.

5 0
3 years ago
Please help me!!!!!!​
Leona [35]

The answer is B

To write the equilibrium constant for an equation, all you have to do is divide the products by the reactants. The reactants are always on the left side, and the products are always on the right side. The coefficients of the elements will be written as the exponent of that same element. However, in this equation, we do not have to write any exponents, as there are no coefficient but 1.

5 0
3 years ago
4. What are three sources of environmental contaminants?
FinnZ [79.3K]

Explanation:

  • plastics
  • contaminate water
  • and un useful things

<em>for</em><em> </em><em>more</em><em> </em><em>inforamation</em><em> </em><em>you</em><em> </em><em>shall</em><em> </em><em>search</em>

5 0
2 years ago
Generally, as you go from left to right on the periodic table, what happens to:
Stolb23 [73]

Answer:

A.Atomic Radius I heard something similar when my teacher explained this to my class

3 0
3 years ago
The ph of a fruit juice is 3.43.4. find the hydronium ion​ concentration, left bracket upper h 3 upper o superscript plus right
DENIUS [597]
PH is simply a convenient way to denote hydronium ion concentration (usually in moles per liter or molarity). pH is calculated from the given concentration using the equation:   pH  =  -log [H3O⁺]

To find [H3O+] from the given equation, we apply the antilog. 
 [H3O⁺]  =  10⁻⁽pH⁾ or ten raised to the negative value of pH
A solution with a pH of 3.43 has a hydrogen ion concentration of 3.7154x10^-4 moles per liter.
4 0
3 years ago
Other questions:
  • Which of the following describes the melting point of a solid?
    14·2 answers
  • Based on the units given for displacement and time, what will the units for velocity be?
    12·1 answer
  • When zinc reacts with sulfuric acid, as shown here, what mass of hydrogen is produced from 31.8 g of zinc?
    6·1 answer
  • Electrons do not usually flow through the electron-transport chain to O2, unless ADP is simultaneously phosphorylated to _____.
    7·2 answers
  • Consider the chemical equation in equilibrium.
    14·2 answers
  • Please Help!
    6·1 answer
  • Atoms are composed of subtomatic particles called
    8·1 answer
  • Explain newton's first law of motion
    8·1 answer
  • Los ácidos tienen un sabor amargo
    13·1 answer
  • This leaf is green is A. an observation, B. a hypothesis. C. a theory As Corporation. All Rights Reseruar​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!