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]
4 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]4 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]4 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
Why do cells have a limit to how big or small they can be?
Pepsi [2]
Cells are so little, so they can maximize their ratio of surface area to volume. Smaller cells have a higher ratio which allow more molecules and ions move across the cell membrane per unit of cytoplasmic volume. Cells are so small because they need to be able to get the nutrients in and the waste out quickly.
4 0
4 years ago
You have 41.6 g of O2 gas in a container with twice the volume as one with CO2 gas in another container. The pressure and temper
prisoha [69]

Answer:

The mass of carbon dioxide is 28.6 grams

Explanation:

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

Mass of O2 = 41.6 grams

Volume of the O2 container = 2V

Volume of the CO2 container = V

Pressure and temperature are the same

<u><em>Step 2:</em></u> Ideal gas law

The ideal gas law = p*V=nRT

For O2: p*2V = n(O2)*R*T

For CO2: p*V = n(CO2)*R*T

n(O2)*R*T / P*2V = n(CO2)*R*T / P*V

Since P, R and T are contstant, we can simplify this to:

n(O2)/2 = n(CO2)

<u>Step 3:</u>  Calculate moles of O2

Moles O2 = mass O2/ Molar mass O2

Moles O2 = 41.6 grams / 32 g/mol

Moles O2 = 1.3 mol O2

The number of moles CO2 = 0.65 mol

Mass of CO2 = Moles CO2 * Molar Mass CO2

Mass of CO2 = 0.65 mol * 44.01 g/mol

Mass of CO2 = 28.6 grams

The mass of carbon dioxide is 28.6 grams

5 0
4 years ago
In the given range,at what temperature does oxy gen have the highest solubility?​
strojnjashka [21]
Water solubility of oxygen at 25oC and pressure = 1 bar is at 40 mg/L water. In air with a normal composition the oxygen partial pressure is 0.2 atm. This results in dissolution of 40 . 0.2 = 8 mg O2/L in water that comes in contact with air.
6 0
3 years ago
Read 2 more answers
Element X has two isotopes. The table gives information about these isotopes.
Sedbober [7]

Answer : The average atomic mass of an element X is, 63.546 amu

Solution : Given,

Mass of isotope X-63 = 62.9296 amu

% abundance of isotope X-63 = 69.15% = 0.6915

Mass of isotope X-64 = 64.9278 amu

% abundance of isotope X-64 = 30.85% = 0.3085

Formula used for average atomic mass of an element X :

\text{ Average atomic mass of an element}=\sum(\text{atomic mass of an isotopes}\times {{\text { fractional abundance}})

\text{ Average atomic mass of an element X}=\sum[(62.9296\times0.6915)+(64.9278\times 0.3085)]

\text{ Average atomic mass of an element X}=63.546amu

Therefore, the average atomic mass of an element X is, 63.546 amu

5 0
4 years ago
Read 2 more answers
PLEASE HELP I CAN'T FIGURE IT OUT
laiz [17]

Answer:

11. F

12.H

16.J

20.K

21.i

Explanation:

7 0
2 years ago
Other questions:
  • Can you tell the difference between an element and compound by measuring mass and volume?
    14·1 answer
  • Please Help ASAP!!!!! 16pts a) If a star's spectrum is "blueshifted" will it necessarily appear blue? Explain b) If star A is cl
    11·2 answers
  • This is how osmium appears in the periodic table. Rounded to the nearest whole number, how many neutrons, on average, are in an
    14·2 answers
  • What is the definition of entropy?
    7·2 answers
  • Hydrogen bromide decomposes when heated to 437C according to the equation: 2HBr(g) H2(g) Br2(g). If the reaction starts with 2.1
    14·1 answer
  • A reaction which needs to gives off energy to complete the chemical reactions is called an
    15·1 answer
  • What property of water explains what happens to it in zero gravity
    7·1 answer
  • What are the different components of an ecosystem?​
    9·2 answers
  • When a planet orbits the sun, it is moving which means it has what type of energy?
    7·1 answer
  • How many molecules are there in 0.661 mol of O2 gas?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!