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
makkiz [27]
3 years ago
6

Design an experiment to demonstrate phototropism.

Chemistry
1 answer:
GarryVolchara [31]3 years ago
3 0

Answer:

Object: To demonstrate phototropism

equipments: A black box, window with light source, a well watered potted plant.

Experiment: A wellwatered potted plant is placed inside a darkened black  box that is having a small window on one side. This is called as phototropic chamber. Window is remain closed for a day the plant shows normal growth.

Whereas if window is opened atwo days it will be found that shoot tip bends and grows towards light proving that it is positively phototropic.

You might be interested in
Iron forms rust, expressed as Fe2O3.
Elina [12.6K]

Answer:

it's C. 159.70 g

Explanation:

hopefully that helps

3 0
3 years ago
Identify two factors that can produce metamorphic rocks
alexdok [17]
Heat & pressure. hope this helps
8 0
3 years ago
Read 2 more answers
1: At which temperature would a reaction withΔH = -102 kJ/mol, ΔS = -0.188 kJ/(mol×K) be spontaneous? 2: At which temperature wo
Naddik [55]

Answer:

1: At temperatures below 542.55 K

2: At temperatures above 660 K

Explanation:

Hello there!

In this case, according to the thermodynamic definition of the Gibbs free energy, it is possible to write the following expression:

\Delta G=\Delta H-T\Delta S

Whereas ΔG=0 for the spontaneous transition. In such a way, we proceed as follows:

1:

0=\Delta H-T\Delta S\\\\T=\frac{-102kJ/mol}{-0.188kJ/mol-K} \\\\T=542.55K

It means that at temperatures lower than 542.55 K the reaction will be spontaneous.

2:

0=\Delta H-T\Delta S\\\\T=\frac{132kJ/mol}{0.200kJ/mol-K} \\\\T=660K

It means that at temperatures higher than 660 K the reaction will be spontaneous.

Best regards!

7 0
3 years ago
How many molecules units are in 4.5 moles of CF4
kobusy [5.1K]
1.0 mole ---------- 6.02x10²³ molecules
4.5 moles -------- ?

4.5 * 6,02x10²³ / 1.0

= 2.709x10²⁴ molecules units
7 0
3 years ago
Chemistry questions?
Liono4ka [1.6K]

Answer:

The first one is 425g of copper

Explanation:

6 0
3 years ago
Other questions:
  • Assume human blood is iso-osmotic or isotonic with a 0.16 mol/lit saline (NaCl) solution (the solution does not change the volum
    11·1 answer
  • Draw the Lewis structure for the molecule containing two H and one Se atoms. How many single bonds, double bonds, triple bonds,
    7·1 answer
  • In 1906, a 600 g diamond was found at the Premier Mine in South Africa- the world's largest uncut diamond. Suppose the diamond's
    13·1 answer
  • How many molecules of water can be produced from 46.72 liters of C8H18? 2\:C_8H_{18}\:+\:25\:O_2\:\:\Longrightarrow\:\:16\:CO_2\
    11·1 answer
  • Why is using dendroclimatology not always a true measure of a past climate?
    5·1 answer
  • What is te name of P2CL7
    14·1 answer
  • Where are fusion reactions found
    15·2 answers
  • Please help!
    8·1 answer
  • The concentration of iodide ions in a saturated solution of lead (ii) iodide is ________ m. The solubility product constant of p
    15·1 answer
  • Which describes a characteristic of water that is responsible for frost wedging? (1 point) O Water expands as it freezes O Water
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!