calculate the total bond energy for a water molecule using the bond energy chart provided.
Answers
Answer:
21 periodic tables equals alot of stuff
Explanation:
Related Questions
What is the vapor pressure at 35°C of a solution made by dissolving 44.6 g of sucrose, C12H22O11, in 62.3 g of water? The vapor pressure of pure water at 35°C is 42.2 torr.
Answers
Answer:
The correct answer is 40.861 torr.
Explanation:
Based on the given information, the weight of the solute (sucrose) given is 44.6 grams, the weight of the solvent, that is, water given is 62.3 grams, and 42.2 torr is the vapor pressure of pure water.
Now the molecular weight of sucrose is 342 grams per mole, and the molecular weight of water is 18 grams per mole.
The mole fraction of solute will be,
Mole fraction of solute = Weight of solute/Molecular weight of the solute/Weight of the solvent/molecular weight of the solvent + Weight of the solute/Molecular weight of the solute
= 44.6 grams/342 grams per mole/62.3 grams/18 grams per mole + 44.6 grams/342 grams per mole
= 0.1304/3.461 + 0.1304
= 0.0363
Now using relative lowering of vapor pressure,
Vapor pressure of pure water-Vapor pressure of solution/Vapor pressure of pure water = Mole fraction of solute
42.4 torr - PS/42.4 torr = 0.0363
Ps = 42.4 -1.5395
Ps = 40.861 torr
Hence, the vapor pressure of the solution is 40.861.
How many molecules are in 7.5*10^19 particles of Fe2O3?
Answers
Answer:
7.5 × 10¹⁹ molecules Fe₂O₃
General Formulas and Concepts:
Chemistry - Atomic Structure
Using Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:
Step 1: Define
7.5 × 10¹⁹ particles Fe₂O₃
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
[tex]7.5 \cdot 10^{19} \ particles \ Fe_2O_3(\frac{6.022 \cdot 10^{23} \ molecules \ Fe_2O_3}{6.022 \cdot 10^{23} \ particles \ Fe_2O_3} )[/tex] = 7.5 × 10¹⁹ molecules Fe₂O₃
What is the mass of 2.2 moles of Beryllium chloride
Answers
Answer:
the mass of 2.2 moles of Beryllium chloride is
Explanation:
175.8200004 gram
help !! Im not sure how to do this
Answers
H20–>H2+1/2O2
So ΔΗ3=483.6/2
2)The second equation must be halved and reversed.
CO2–>CO+1/2O2
So ΔΗ2=-(-566)/2=566/2
And now :
C+O2–>CO2
CO2–>CO+1/2O2
H2O—>H2+1/2O2
(You add them)
C+H2O—>CO+H2
ΔΗrxn=ΔΗ1+ΔΗ2’+ΔΗ3’=-393.5+283+241,8=131,3
QuesLIVII 2 PUNILS)
Explain the difference between ionic, polar covalent and nonpolar covalent bonds and how
electrons are used in the bond. Use the table below to identify the bond present in the 5
molecules. Show your calculations of the electronegativity difference between elements to
support the identified bond.
Element
Carbon
Nitrogen Sodium Chlorine Magnesium Fluorine Hydrogen
(N)
(Mg) (F) (H)
(Na)
(CI)
Electronegativity
2.5
Value
3.0
0.9
3.0
1.2
4.0
2.1
a) MgCl2
b) F2
c) NaCl
Sign Out
Answers
Answer:
See explanation
Explanation:
An ionic bond involves the transfer of electrons from one atom to another. Typically, ionic bond occurs between a metal and a non metal such as between Na and Cl.
A polar covalent bond occurs between two elements having a significant difference in elctronegativity. As a result of this, the shared electron pair is closer to the more electronegative atom thereby making the molecule polar.
A covalent bond involves the sharing of electrons between two atoms that are very close in electronegativity values. The shared electron pair is located at an equidistant position from the nucleus of the both bonding atoms.
For MgCl2, the electronegativity difference is 3.0 - 1.2 = 1.8, the bond is ionic
For F2, the electronegativity difference is 4.0 -4.0 = 0, it is a pure covalent bond.
For NaCl, the electronegativity difference is 3.0 - 0.9 = 2.1, the bond is ionic
what happens when washing soda is exposed to the atmosphere
Answers
Answer:
they lose their water
Explanation:
When exposed to air washing soda crystals lose their water of crystallisation and become amorphous. ∴ The phenomenon is called efflorescence.
when light mass nuclei combine to form a heavier more stable nucleus this is called
Answers
Answer:
Nuclear fusion
Explanation:
Science
the _ of an element is the average mass of an element naturally occurring atom, or isotopes,taking into account the _ of each isotopes
Answers
Answer:
the atomic mass of an element is the average mass of an element naturally occurring atom, or isotopes, taking into account the percentage of each isotopes
Explanation:
The atomic mass of an element is obtained by obtaining the relative abundances (in percentages) of naturally occurring atoms and the masses of the isotopes. The atomic mass can also be defined as the sum of the protons and the neutrons in the nucleus of an element.
In the periodic table, the atomic mass is indicated below the symbol of each of the elements and is usually in the decimal form.
SHOW WORK
A football field is 120.0 yards long, how long is a football field in inches?
Answers
(Multiply the length value by 36)
Answer:
4320 inches
Explanation:
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The force that keeps the planets in orbit is________.
Question options:
mass
gravity
friction
kinetics
Answers
Answer:
The force that keeps the planets in orbit is gravity.
Jan was told by her mother to clean a kettle which had a heavy deposit of limescale. Her friends suggested the following products that could be used to achieve this: Zippo, Wham Bam, Scale Away and Blorox. Jan found that Scale Away successfully removed the limescale deposit while the others did not. Propose a hypothesis to explain the above observation?
Answers
Answer:
what happened when they removed the limescale?
Explanation:
How is electrical energy produced??
Answers
Answer:
Most electricity is generated with steam turbines using fossil fuels, nuclear, biomass, geothermal, and solar thermal energy. Other major electricity generation technologies include gas turbines, hydro turbines, wind turbines, and solar photovoltaics.
Explanation:
i hope this give you a bit more help
Which of the following would increase the intensity of the tornado?
a. decrease in wind speed
b. decrease in condensation
c. increased rate of evaporation
d. increase of cold air
Answers
Answer:
c. increased rate of evaporation
Explanation: Tornado strength is affected by many factors including wind speed, size, where the tornado forms geographically, and duration of the tornado. Additionally, conditions for a supercell storm usually intensify the strength of tornadoes such as humidity, atmospheric instability, lift, and vertical wind shear.
please answerrrrrrrrrrrrrrrrrrrrrrrrr
Answers
Answer: I'm in no way like an expert but I've heard water goes from an elevated area to a lower area. So it should be arrows that start at a more elevated to less elevated. Like white to brown, and orange to yellow, and stuff like that. I hope that helped? Anyway, have a lovely day!
Explanation:
I NEED THESE ASAP PLEASE!!!! I WILL MARK A BRAINLIEST...
Magnesium and Chlorine are chemically bonded. Which type of bond holds them
together?
ionic
covalent
neither
Answers
Answer:
The answer should be Ionic
Explanation:
prove me wrong
Explanation:
What forms when two atoms combine?
Answers
Answer: A molecule is formed when two or more atoms combine together.
Hope this helps!
Which lists the waves in order of wavelength, from longest to shortest?
A) X-rays, infrared, radio waves
B) infrared, visible light, gamma rays
C) ultraviolet, microwaves, visible light
D) radio waves, gamma rays, visible light
Answers
Answer:
B
Explanation:
gamma rays have the shortest wave length
Infrared, visible light and gamma rays are lists of the waves in order of wavelength, from longest to shortest. Hence, option B is correct.
What is wavelength?Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.
The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.
Hence, option B is correct.
Learn more about wavelength here:
https://brainly.com/question/4112024
#SPJ2
√2a-3 =
√a+ 7 solve
Answers
Answer:
[tex] \huge100(3 + 2\sqrt{2} )[/tex]
is the right answer.
In an experiment, the independent variable __________. (WILL MAKE BRAINLIEST)
A.
always influences the dependent variable
B.
is the same for all groups in an experiment
C.
is influenced by the dependent variable
D.
is manipulated or varied by researchers
Thanks to anyone who helps! :)
Answers
Answer:
D
Explanation:
Independent variables (IV): These are the factors or conditions that you manipulate in an experiment. Your hypothesis is that this variable causes a direct effect on the dependent variable. Dependent variables (DV): These are the factor that you observe or measure.
Find the empirical formula of a
compound which contains 80% carbon
hydrogen by mass
and 20%
Answers
Answer:
Element
%
Atomic weight
Percentage at weight
Simple ratio
C
80
12
H
20
1
Hence, empirical formula of hydrocarbon .
Hope it will help you......3) Which element is the 2s orbital closest to the nucleus?
A) Te
B) Se
C) O
D) Po
E)S
Answers
What is the molarity of a solution made by dissolving .75mol of NaCl in 3.0L of solution?
Answers
4. Anh measured the temperature of a pond near his house. Before he left for school, the water in the
pond was 18°C. When he came home from school, the temperature of the pond was higher than it
was in the morning. What happened to the water molecules while he was at school?
Answers
The water molecules must have gained more thermal energy while Anh was away from the house.
An increase in the temperature of a body means that the body has gained more energy in the form of heat, also known as thermal energy.
The thermal energy represents the characteristic of a body responsible for its temperature.
An increase in the temperature of the water molecules increases their kinetic energy and, thus, makes the water molecules move around faster than before.
More on thermal energy can be found here: https://brainly.com/question/11278589?referrer=searchResults
what is an example of a composite material
Answers
Answer:
Reinforced concrete and masonry.
Composite wood such as plywood.
Reinforced plastics, such as fibre-reinforced polymer or fiberglass.
Ceramic matrix composites (composite ceramic and metal matrices)
Metal matrix composites.
Explanation: These are some composite this should help
What is the potential energy of a 2 kg rock sitting at the top of a 10 meter high cliff?
Answers
Answer:
im sorry im bored can we talk
Explanation:
lol
RESPONSES MUST BE WRITTEN IN YOUR ANSWER PACKET RESPONSES MUST BE WRITTEN IN YOUR ANSWER PACKETESSAY QUESTION:Answer your essay question in space below 20ptsHow are the key elements of scientific thinking used in the following scenario?(Use 3+ specific examples)While you are heating water in an electric kettle, you notice it fails to boil water. Thinking that some part of the kettle (coil or cord etc.) is malfunctioning, you notice there is no change in the water temperature. Assuming you forgot to plug the kettle in, you check and discover it is plugged into the wall (outlet). You then take the kettle to a different room and try plugging it into a different outlet – you find the kettle works. You conclude that there is no power in the kitchen. Coming back to the kitchen, you turn on the light and find that nothing happens.
Answers
Answer:
i mzxd vsdfvdsfbdfdf
Explanation:
Answer:
i dont get it
Explanation:
why one has higher mass and why?
0.5 mole of coz or 16g of sog
Answers
so2 has mass of 16gm and co2 has mass
of 22gm. Thus co2 has more mass.
Explanation given in the image.
Hope it helps!
Question 5(Multiple Choice Worth 5 points)
Two samples of water, 10 grams and 50 grams, are in separate cups. Which of the following properties is different for the two?
O Boiling point
O Color
O Density
O Volume
Answers
Answer:
Density
Explanation:
Answer: the answer is density
Explanation:
What is the mass of sodium (Na) in 50 grams of table salt (NaCl)? Show
your work.
Answers
a light particle has the wavelength of 426.2 nm. what is the wavelength in meters
Answers
Answer:
0.0000004262m
Explanation:
i just looked up a converter.