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
Nataliya [291]
3 years ago
14

1. You watch water falling from the top of a waterfall to the bottom. How would you characterize this physical phenomenon in ter

ms of spontaneity? What if you wanted to move the water from the bottom of the falls to the top—how would you characterize that reaction?
Chemistry
2 answers:
alexandr1967 [171]3 years ago
6 0
Well the reason why the water valve was because of the force of gravity. Without the force of gravity the water would have flown so if you had to try to move the water up the waterfall you would have to fight the force of gravity
aliya0001 [1]3 years ago
6 0

Answer:

Water falling from the top of the fall to the bottom is a spontaneous process. Raising water from the bottom to the top of the waterfall is a non-spontaneous process.

Explanation:

Water falling from the top of the fall to the bottom is a spontaneous process. The Earth’s gravity is pulling every object to the centre of the Earth. So it is difficult to overcome Earth’s centre of gravity and raise the water from the bottom to the top of the fall. Raising water from the bottom to the top of the waterfall is a non-spontaneous process.

You might be interested in
Which element increases its oxidation number in this reaction? 2Na + 2H2O → 2NaOH + H2
sammy [17]

Answer:

Sodium

Explanation:

-Gradpoint

6 0
3 years ago
What is the mass of 3.04×10^-4 mol of baking soda, NaHCO3?​
Zigmanuir [339]

Answer:

0.025536g

Explanation:

no. of mole = mass/Mr

mass = Mr ×  no. of mole

         = [23 + 1 + 12 + 3(16)] × 3.04×10^-4

         = 0.025536g

         = 0.0255g (3 significant figures)

8 0
3 years ago
Summarize how a dinosaur can become a fossil.
IceJOKER [234]
The dinosaur dies and is washed away in a flood. The body is buried in sediment (mud or sand) and eventually the body is covered. ... Eventually, the fossil skeleton comes to the surface and is discovered.
3 0
3 years ago
Balance each of the following examples of heterogeneous equilibria and write each Kc expression. Then calculate the value of Kc
wolverine [178]

Answer:

(1) 2Al(s) + 2NaOH(aq) + 6H2O(l) ↔2Na[Al(OH)4](aq) + 3H2(g)

∴ Kc = ( PH2³ * [Na[Al(OH)4]² ) / [NaOH]² = 11

(2) H2O(l) + SO3(g) ↔ H2SO4(aq)

∴ Kc = [ H2SO4 ] / PSO3 = 0.0123

(3) 2P4(s) + 6O2(g) ↔ 2P4O6(s)

∴ Kc = Kc = 1 / PO2∧6

Explanation:

(1) 2Al(s) + 2NaOH(aq) + 6H2O(l) ↔ 2Na[Al(OH)4](aq) + 3H2(g)

∴ O /  Al: 0 → +2 ≡ 2e-

         Na: +1 → +2

∴ R /  H: +1 → 0

     2 - Al - 2

     2 - Na - 1

     8 - O - 8

     14 - H - 14

⇒ Kc = ( PH2³ * [Na[Al(OH)4]² ) / [NaOH]² = 11

(2) H2O(l) + SO3(g) ↔ H2SO4(aq)

           1 - S - 1

           4 - O - 4

           2 - H - 2

⇒ Kc = [ H2SO4 ] / PSO3 = 0.0123

(3) 2P4(s) + 6O2(g) ↔ 2P4O6(s)

       8 - P - 8

       12 - O - 12

⇒ Kc = 1 / PO2∧6

6 0
3 years ago
Subject. Earth Science.
Anettt [7]
Slow cooling of magma results in the formation of c. coarse-grained textured rocks. An example of a coarse grained textured rock formed in this fashion is granite. As the rate of cooling of igneous rocks increases, the size of the crystal that is formed decreases. The Bowen's reaction series shows the different rocks cooled at different rates.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Show me the periodic table
    15·1 answer
  • What is the mole fraction of solute and the molal concentration for an aqueous solution that is 16.0% NaOH by mass?
    6·1 answer
  • QUESTION:
    8·1 answer
  • During the titration of a diluted vinegar sample with a sodium hydroxide solution, the volume of sodium hydroxide used was less
    5·1 answer
  • A small container is filled with liquid water. What can happen if the container of water is an open system that couldn’t happen
    6·2 answers
  • Which substance do plants use to capture light energy from the sun? a) Carbon dioxide b) Chlorophyll c) Glucose d) Oxygen
    12·2 answers
  • Which structure is the sun located
    5·1 answer
  • GRADE 5 SCIENCE MYA-2020-2021
    15·1 answer
  • Save the ________ used to extract metals.
    11·1 answer
  • What will most likely happen when a component is removed from a reaction system at equilibrium?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!