What are the number of molecules in 2.56 moles of water?
Answers
Answer:
1.54x10^24
Explanation:
To convert moles to molecules, multiply the number of moles by Avagadro's number (6.02x10^23).
2.56mol × 6.02x10^23 = 1.54x10^24
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Why does the reaction H2O + Cu→no reaction not proceed to a product?The reaction proceeds too slowly to create products. Copper has a higher activity than hydrogen and cannot replace it. Copper has a lower activity than hydrogen and cannot replace it. The reaction cannot occur because water is a reactant. answer is Copper has a lower activity than hydrogen and cannot replace it.
Lithium, sodium, and potassium are examples of
Fossil fuels are running out. Solar and wind technologies are location specific and don't produce enough power to entirely replace fossil fuels. These are reasons to focus on which of the following? A)Nuclear Power B)Green Energy C)Coal and Natural Gas D)Increasing the oil supply
B. One carries warm water and another carries cold water.
C. One begins at the equator, and another begins near the South Pole.
D. They travel to different hemispheres.
Answers
Answer:
B. one carries warm water and another carries cold water
The correct answer is B. One carries warm water and another carries cold water.
The Brazil Current and the Gulf Stream are both ocean currents that transport water in different parts of the world. The Brazil Current flows along the eastern coast of South America in the South Atlantic Ocean, while the Gulf Stream flows along the eastern coast of North America in the North Atlantic Ocean.
The Brazil Current carries warm water from the tropics towards the higher latitudes, while the Gulf Stream carries warm water from the Gulf of Mexico towards the North Atlantic. In contrast, the Brazil Current carries warm water and the Gulf Stream carries cold water.
Therefore, option B is the correct answer as it accurately describes the difference between the Brazil Current and the Gulf Stream.
Answers
Answer:
1) The dilution scheme will result in a 200μM solution.
2) The dilution scheme will not result in a 200μM solution.
3) The dilution scheme will not result in a 200μM solution.
4) The dilution scheme will result in a 200μM solution.
5) The dilution scheme will result in a 200μM solution.
Explanation:
Convert the given original molarity to molar as follows.
Consider the following serial dilutions.
1)
Dilute 5.00 mL of the stock solution upto 500 mL . Then dilute 10.00 mL of the resulting solution upto 250.0 mL.
Molarity of 500 mL solution:
10 mL of this solution is diluted to 250 ml
Convert μM :
Therefore, The dilution scheme will result in a 200μM solution.
2)
Dilute 5.00 mL of the stock solution upto 100 mL . Then dilute 10.00 mL of the resulting solution upto 1000 mL.
Molarity of 100 mL solution:
10 mL of this solution is diluted to 1000 ml
Convert μM :
Therefore, The dilution scheme will not result in a 200μM solution.
3)
Dilute 10.00 mL of the stock solution upto 100 mL . Then dilute 5 mL of the resulting solution upto 100 mL.
Molarity of 100 mL solution:
5 mL of this solution is diluted to 1000 ml
Convert μM :
Therefore, The dilution scheme will not result in a 200μM solution.
4)
Dilute 5 mL of the stock solution upto 250 mL . Then dilute 10 mL of the resulting solution upto 500 mL.
Molarity of 250 mL solution:
10 mL of this solution is diluted to 500 ml
Convert μM :
Therefore, The dilution scheme will result in a 200μM solution.
5)
Dilute 10 mL of the stock solution upto 250 mL . Then dilute 10 mL of the resulting solution upto 1000 mL.
Molarity of 250 mL solution:
10 mL of this solution is diluted to 1000 ml
Convert μM :
Therefore, The dilution scheme will result in a 200μM solution.
B) renewable.
C) made from minerals.
D)Burned in hydroelectric plants.
2. Which of the fallowing is a consequence of using fossil fuels as an energy source?
A) decreased carbon dioxide levels
B)increased biodiversity
C) increased acid rain
D) decreased ecosystem disruption
3. Which of the fallowing is a renewable form of energy
A) gasoline
B) natural gas
C) wind
D) coal
4. Which of the fallowing activities would contribute the most to global warming?
A)driving a solar-powered car
B)snowmobiling around a national park
C)launching an engine less glider
D)trekking by horseback
5. Which of the fallowing sets of actions will conserve the most energy?
A)caulk windows, use cloth shopping bags, wash clothes in cold water
B)bicycle or walk, turn up thermostat in winter, run water while brushing teeth
C)buy compact fluorescent bulbs, use plastic shopping bags, buy heavily packaged foods
D)insulate walls, buy bottled water, dry laundry in a clothes dryer
20 points and brainliest answer for who answers this correctly
Answers
2) C
3) C
4) B
5) A
How could she explain why her compass was not working?
A
A compass works with a magnetic field, and the electric current running through the lines above it would interfere with the magnetic field.
B
The compass works because of an electric field, and the electric current running through the lines above would interfere with the electric field.
C
The compass works because of a gravitational field, and the magnetic current running through the lines above would interfere with the gravitational field.
D
A compass works because of a magnetic field, and the magnetic current running through the power lines above it would interfere with the magnetic field below it.
Answers
a compass works with magnetic field the answer is d
Answers
Final answer:
In liquids, particles keep changing their neighbors while sliding past each other, confined to the shape of the vessel. In gases, particles are free, separated by large distances, and move rapidly in straight lines. Temperature is a measure of the average motion energy of the particles in both liquids and gases.
Explanation:
The movement of particles in liquids and gases is different due to their states of matter. In liquids, particles are held together by attraction, allowing them to slide smoothly past each other and change neighbors, but they remain confined to the shape of the vessel they are in. This is a less energetic state of movement.
On the other hand, in gases, particles are broken free of bonds. They travel in straight lines and are separated by large distances compared to their size, colliding with each other or the walls of the container. They are in a more energetic state and rapidly occupy all the accessible volume, hence gases can expand without limit to fill their containers.
At a microscopic level, the temperature of a liquid or gas is a measure of the average motion energy of the particles making it up - the hotter the liquid or gas, the more rapid the motion of its molecules or atoms.
Learn more about Particle Movement in Liquids and Gases here:
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