Answers
Answer:
An orbital is a region in space where there is a high probability of finding an electron.
Explanation:
The orbital is a concept that developed in quantum mechanics. Recall that Neils Bohr postulated that the electron occupied stationary states which he called energy levels. Electrons emit radiation when the move from a higher to a lower energy level. Similarly, energy is absorbed by an electron to move from a lower to a higher orbit.
This idea was upturned by the Heisenberg uncertainty principle. This principle state that the momentum and position of a particle can not be simultaneously measured with precision.
Instead of defining a 'fixed position' for the electron, we define a region in space where there is a possibility of finding an electron with a certain amount of energy. This orbital is identified by a set of quantum numbers.
Answer:
three - dimensional space that shows the probability where an electron is most likely to be found
Related Questions
*14.
How many atoms of sulfur are in 0.75 moles of carbon disulfide?
Answers
.989 atms to mm Hg
121.4 kPa to mm Hg
(convert)
Answers
Answer:
See Below
Explanation:
These are basic conversion factors.
1 atm = 760 mmhg
1 kilopascal = 7.50062 mmhg
Solving
0.989 * 760= ~751.64 mmhg
121.4 * 7.50062= ~910.57 mmhg
Hope this helps!
Balanced or Unbalanced
K+2MgBr=KBr+Mg
Answers
Local winds can be caused by______heating of the earth's surface.
equal
ground
uneven
super
Answers
Which of these waves has the greatest wavelength? (3 points) Wave shown with 2 wavelengths. Wave shown with 3 wavelengths. Wave shown with 1 wavelength stretch over a short distance. Wavelength shown with 1 wavelength stretched over a long distance.
Answers
The waves that has the greatest wavelength is Wavelength shown with 1 wavelength stretched over a long distance.
Waves explained.A wave could be a disturbance or variety that voyages through a medium or space, carrying vitality without transporting matter. Waves can take different shapes and happen totally different sorts of waves, counting mechanical waves and electromagnetic waves.
Mechanical waves require a medium to propagate, meaning they require a substance like water, discuss, or a strong fabric to transmit the wave. Illustrations of mechanical waves incorporate water waves, sound waves, and seismic waves. In these waves, particles of the medium sway or vibrate in a design, exchanging energy from one molecule to another.
Electromagnetic waves, on the other hand, don't require a medium and can travel through vacuum, such as in space. Electromagnetic waves comprise of electric and attractive areas swaying opposite to each other and to the heading of wave engendering. Illustrations of electromagnetic waves incorporate obvious light, radio waves, microwaves, infrared waves, bright waves, X-rays, and gamma beams.
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In any ecosystem, the survival of a species depends on the resources that are available. Beneath the tree canopy in a tropical rainforest, growth of some plant species may be limited. The availability of which of these resources most likely limits the growth of plants on the ground level in this ecosystem?
Group of answer choices
minerals
carbon dioxide
water
sunlight
Answers
Sunlight is the resource that most likely limits the growth of plants on the ground level in a tropical rainforest ecosystem. In the tropical rainforest, the dense tree canopy often limits the amount of sunlight that reaches the ground level. This limited sunlight can make it difficult for plants to photosynthesize and produce energy, which can in turn limit their growth and survival. While water and minerals are also essential for plant growth, they are typically more abundant in the tropical rainforest than sunlight. Carbon dioxide is also important for photosynthesis, but it is typically not a limiting factor for plant growth in a tropical rainforest ecosystem. Therefore, the availability of sunlight is the most likely resource that limits plant growth on the ground level in a tropical rainforest ecosystem.
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What mass of NaCl is needed to produce a 26.4 mol/L with a 1.7 L volume?
Answers
we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.
To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.
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How do conduction, convection, and radiation redistribute incoming solar energy?
Answers
The climate’s heat engine must not only redistribute solar heat from the equator toward the poles, but also from the Earth’s surface and lower atmosphere back to space. Otherwise, Earth would endlessly heat up. Earth’s temperature doesn’t infinitely rise because the surface and the atmosphere are simultaneously radiating heat to space. This net flow of energy into and out of the Earth system is Earth’s energy budget. Energy from sunlight is not spread evenly over Earth. One hemisphere is always dark, receiving no solar radiation at all. On the daylight side, only the point directly under the Sun receives full-intensity solar radiation. From the equator to the poles, the Sun’ rays meet Earth at smaller and smaller angles, and the light gets spread over larger and larger surface areas (red lines). (NASA illustration by Robert Simmon.) The solar radiation received at Earth’s surface varies by time and latitude. This graph illustrates the relationship between latitude, time, and solar energy during the equinoxes. The illustrations show how the time of day (A-E) affects the angle of incoming sunlight (revealed by the length of the shadow) and the light’s intensity. On the equinoxes, the Sun rises at 6:00 a.m. everywhere. The strength of sunlight increases from sunrise until noon, when the Sun is directly overhead along the equator (casting no shadow). After noon, the strength of sunlight decreases until the Sun sets at 6:00 p.m. The tropics (from 0 to 23.5° latitude) receive about 90% of the energy compared to the equator, the mid-latitudes (45°) roughly 70%, and the Arctic and Antarctic Circles about 40%. (NASA illustration by Robert Simmon.) The amount of sunlight the Earth absorbs depends on the reflectivness of the atmosphere and the ground surface. This satellite map shows the amount of solar radiation (watts per square meter) reflected during September 2008. Along the equator, clouds reflected a large proportion of sunlight, while the pale sands of the Sahara caused the high reflectivness in North Africa. Neither pole is receiving much incoming sunlight at this time of year, so they reflect little energy even though both are ice-covered. Hope this helps!
The solar energy from sun is radiating to the earth's surface and making the atmosphere warmer. The heat energy is redistributing back by through different heat transfer modes.
What is heat transfer?Heat energy transfer from hotter region to colder region by the temperature gradient. The heat is transferring through solids by conduction. Conduction is the process of heat transfer through the closely packed particles in solids.
Heat transfers through convection in liquids. Where the hot molecules rise to the surface and transfers the heat to other molecules. The heat radiated to the earth make the sources in earth warmer. Through convection, the water molecules heat up.
The water vapor formed by convection process radiates to the atmosphere and redistributes the energy back.
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The table below lists three characteristics of an atom of an element
Number of protons:10
Number of neutrons:10
Number of Valence Electrons:8
An atom of which element is described by the data in the table?
Answers
Explanation
Neon has 10 protons, and 10 neutrons.
How to find neutrons:
The number of mass minus the number of protons. 20-10=10.
Valence electrons are the number on the last shell of energy level, with is 8.
But a easy way to find it is by looking at the group number, the last group number in case 18 only focus at 8. Questions?
7) How many molecules of CO2 are in 2.5 L at STP?
Answers
By using the ideal gas law and Avogadro's number, we find that there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.
To determine the number of molecules of CO2 in 2.5 L at STP (Standard Temperature and Pressure), we can use the ideal gas law and Avogadro's number.
Avogadro's number (N_A) is a fundamental constant representing the number of particles (atoms, molecules, ions) in one mole of substance. Its value is approximately 6.022 × 10^23 particles/mol.
STP conditions are defined as a temperature of 273.15 K (0 °C) and a pressure of 1 atmosphere (1 atm).
First, we need to convert the volume from liters to moles of CO2. To do this, we use the ideal gas law equation:
PV = nRT,
where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
Since we have STP conditions, we can substitute the values:
(1 atm) × (2.5 L) = n × (0.0821 L·atm/(mol·K)) × (273.15 K).
Simplifying the equation:
2.5 = n × 22.4149.
Solving for n (the number of moles):
n = 2.5 / 22.4149 ≈ 0.1116 moles.
Next, we can calculate the number of molecules using Avogadro's number:
Number of molecules = n × N_A.
Number of molecules = 0.1116 moles × (6.022 × 10^23 particles/mol).
Number of molecules ≈ 6.72 × 10^22 molecules.
Therefore, there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.
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**DUE TOMORROW NEED ANSWER ASAP**
If the entire mass of the Milky Way was due to gas and stars, how would you expect the rotational speed of a star near the edge of the galaxy to compare to the rotational speed of a star near the center?
Answers
Answer:
We would expect stars near the edge of the galaxy to rotate slower than stars near the center. This is because the rotational speed of objects in a rotating system depends on their distance from the center of rotation. Stars near the center of the galaxy are closer to the gravitational center of the galaxy's mass, so they feel a stronger gravitational pull and rotate faster. Stars near the edge are farther from the center, so they feel a weaker gravitational pull and rotate slower. This results in a gradient of rotational speeds, with the fastest speeds near the galactic center and slower speeds near the edges.
Which of the following are general properties of acids?
I. has no reaction with metal
II. tastes sour
III. conducts electricity
Answers
Answer:
II. tastes sour III. conduct electricity
Explanation:
Let us go through all three statements.
Statement I says that acid doesn't react with a metal.
This is false because acids react with metals to form salt and hydrogen.
Statement II says that acids taste sour.
This statement is true. If you taste a lemon you realize that it's sour. This is due to the presence of citric acid in the lemon.
Statement III says that acids conduct electricity.
This statement is also true. If you mix an acid in the water, it dissociates many Hydrogen ions which act as charge carriers and help conduct electricity.
balance the equation C15H30 + O2 -> CO2 + H2O
Answers
Answer:
C15H30 + 23(O2) -> 15(CO2) + 15(H2O)
Complicated one!
Provide one example of how life on Earth would not be possible without water based on its characteristics.
Answers
Answer: ice is less dense than liquid water. If ice was more dense, Earth would freeze.
Explanation: There are many reasons why life on Earth depends on the characteristics of water. One could discuss hydrogen bonds and its role as a solvent, but the unusual property of water is is the change in density with change in temperature. Water is densest at 4 degC, which is why ice floats - it is less dense than cold water (it melts quickly in warm water, so density isn’t impotant at higher temperatures). Most liquids are less dense than the solid, frozen form. If this was the case with water, any ice that formed would sink, and sease would freeze from the bottom up. Furthermore, the lowest layers would be insulated and would not all melt in summer. Thus over time, the seas would become a thin layer of liquid water at best, over solid ice. Life could not develop without liquid seas. In addition, ice is reflective, reducing the amount of sunlight absorbed, further reducing temperatures. Without ocean circulation, polar areas would be even colder, and there would be no rain.
What volume (in mL) of 0.150 M HCl would be required to completely react with 4.40 g of Al in the following chemical reaction?
2 Al(s) + 6 HCl(aq) → 2 AlCl₃ (aq) + 3 H₂(g)
Answers
3260 mL. The 3260 mL of 0.150 M HCl is required to completely react with 4.40 g of Al.
A balanced chemical reaction is what?When the total number of atoms in the reactants and products is equal, the reaction is said to have occurred. equilibrium in a chemical reactions.
What constitutes balancing a chemical equation in four steps?Here are the procedures: Count the atoms on each side first. Next, alter one of the compounds' coefficients. Finally, count the atoms once more, and then repeat steps two and three until the equation is balanced.
we have to calculate the moles of aluminum used in the reaction:
Molar mass of Al = 26.98 g/mol
moles of Al = mass/molar mass
= 4.40 g/26.98 g/mol
= 0.163 mol
the number of moles of HCl required to react with 0.163 mol of Al is:
moles of HCl = (6/2) x 0.163 mol
= 0.489 mol
we can use the molarity of HCl to calculate the volume required:
Molarity of HCl = 0.150 mol/L
The volume of HCl = moles of HCl / molarity of HCl
= 0.489 mol / 0.150 mol/L
= 3.26 L
the volume of HCl is usually reported in milliliters,
Volume of HCl = 3.26 L x 1000 mL/L
= 3260 mL
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What is the answer? Please
Answers
Answer:
Leeunwenhoek
Explanation:
Anton Von Leeunwenhoek was the first scientist to observe live cells and in greater details. He described spirogyra in the mid 15th century.
His contribution to the scientist community opened up the world of micro-organisms. He produced several microscopes to observed the world of micro-organisms that we cannot see with our naked eyes. He also studied plants extensively.The period of a wave is directly proportional to the wavelength of the wave. True or False
Answers
The period of a wave is directly proportional to the wavelength of the wave. True
What is the relationship between a wave's wavelength and its period?Period is the time it takes to complete one cycle of a wave, and wavelength is the distance between two identical locations in the neighbouring cycles of a wave. The number of cycles in a second is defined as frequency. In other terms, frequency = 1 / period.
An electromagnetic wave's wavelength is proportional to its frequency. Likewise, an electromagnetic wave's frequency is equal to the reciprocal of its period.
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Compare and Contrast additive and displacement. Explain your answer.
Answers
Answer:
In a single-displacement reaction, only one substance is replaced in a compound. In a double-displacement reaction, two substances are replaced in compounds.
Explanation:
What is the boiling point, in °C,
of a 0.321 molal aqueous
solution of NaCl?
BP(water) = 100 °C
Kb (water) = 0.512 °C/m
[?] °C
Answers
Answer:
the boiling point of solution at 3 decimal point is 100.329०C Ans.
Explanation:
given data -
molality of Nacl = 0.321 m
molal boiling point elevation constant (Kb) =0.512०C/m
# formula of change of boiling point of sample =
∆ Tb =i × Kb × m
Kb = molal boiling point of elevation constant
m = molality
i = vont's hoff factor.
Nacl is strong electrolyte and its 100% dissociate so the value of i for Nacl is 2
put value in the formula
∆ Tb = 2 × 0.512 ०C/m × 0.321m
= 0.3287
= 0.329०C
∆Tb = T'b - Tb
T'b = boiling point of solution
Tb= boiling point of solvent( water)
0.329०C = T'b - 100०c ( boiling point of water = 100०C)
T'b = 0.329०C + 100०C
= 100.329०C
Describe the AIR MASSES that would affect the climates of
Florida.
Maine.
Montana.
texas
Answers
The AIR MASSES that would affect the climates of Florida : are maritime tropical air mass and the maritime polar air mass,
Maine : maritime polar air mass and maritime tropical air mass,
Montana : continental polar and maritime polar air masses.
Texas : maritime tropical air masses and continental tropical air masses
What is known as AIR MASSES?An air mass is described as a large body of air with generally uniform temperature and humidity.
An air mass's properties are determined by the region from which it originates. The likelihood that the air mass will take on characteristics of the surface below increases with the amount of time it spends over its source region.
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A molecule of sugar has 45 atoms to make up the substance. If a sugar crystal has 1000 molecules, how many atoms are present?
Answers
Answer:
45000 atoms
Explanation:
a molecule has 45 atoms
1000 molecules have how many atoms??
by mathematical cress cross calculation we get that:
45 X 1000 = 45000 atoms
A 32.00 mL sample of an unknown H3PO4 solution is titrated with a 0.140 M NaOH solution. The equivalence point is reached when 25.24 mL of NaOH solution is added.
The neutralization reaction is
H3PO4(aq)+3NaOH(aq)→3H2O(l)+Na3PO4(aq)
What is the concentration of the unknown H3PO4 solution?
Express the molarity to three significant figures.
Answers
The concentration of the unknown \(H_3PO_4\) solution would be 0.0368 M
Stoichiometric problemThe equation of the reaction is as follows:
\(H3PO_4(aq)+3NaOH(aq)--- > 3H_2O(l)+Na_3PO_4(aq)\)
The mole ratio of the \(H_3PO_4\) solution to the NaOH solution is 1:3.
But 0.140 M, 25.24 mL of NaOH was used.
Recall that: mole = molarity x volume (in Liters)
Mole of 0.140 M, 25.24 mL of NaOH = 0.140 x 25.24/1000
= 0.0035336 mol
Following the mole ratio, the equivalent mole of \(H_3PO_4\) would be:
0.0035336 /3 = 0.00117786666
Recall that: molarity = mol/volume (in Liters)
Molarity of 0.00117786666 mol, 32.00 mL \(H_3PO_4\) = 0.00117786666/0.032
= 0.0368 M
In other words, the molarity of the \(H_3PO_4\) solution to 3 significant figures is 0.0368 M.
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what would the result be of adding one proton to an atom
Answers
Answer:Protons carry a positive electrical charge and they alone determine the charge of the nucleus. Adding or removing protons from the nucleus changes the charge of the nucleus and changes that atom's atomic number. For example, adding a proton to the nucleus of an atom of hydrogen creates an atom of helium and thats your answer
Explanation:
yurrrrrrr
Which pictures shows the proper structure of the water molecule? Click the picture to see each choice.
Answers
The third picture is the answer
Explanation:
there are 2 hydrogen atom 1 oxygen
Apply your knowledge of atomic theory to determine The number of protons contained in a neutral Adam of palladium that has 46 electrons
Answers
For this to happen the number of protons(+) and electrons(-) must be the same.
So a neutral atom of Palladium will also have 46 protons (same as the electron no.)
the difference between Major purchase Consumer good
Answers
A major purchase refers to a high-cost item or service that is considered a significant investment for an individual or household, such as a car, home, or college education. Major purchases usually involve a large sum of money and require careful planning and consideration before a final decision is made.
Any item that a person or a household buys for their own use or consumption is called a consumer good. Durable and non-durable goods are two types of consumer goods that can be classified. Consumer goods are tangible items that people or households buy for their own use or consumption.
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Your question is incomplete, most probably the complete question is:
The difference between Major purchase and Consumer good?
Give the full electron configuration for sulfur.
electron configuration:
Answers
Answer:
[Ne] 3s² 3p⁴
Electrons per shell: 2,8,6
Answer : 2,8,6 (Sulphur Atom)
2,8,8 (Sulphur Ion)
On page 49, the phrase "seemed genuinely suprised", is used. What does the word "genuinely" mean as it is used in this section? In the book tangerine
Answers
Explanation:
the definition of genuine:
genuinly means honestly or truley
Which location in the image below represents the OLDEST rocks?
Answers
A and C are the only two places that would represent the oldest rocks
What is the difference between esterification and hydrolysis?
Answers
The electrification reaction is reversible. The formation of the ester represents a condensation, but the reverse reaction represents the hydrolysis of the ester.
that's all I got
good luck:)