Which member of each of the following pairs has the larger London dispersion forcesa. H20 or H.S?b. CO2 or CO?C. Sil, or GeHa?
Answers
a. In the case of \(H _{2} O\) and \(H _{2} S\) , \(H _{2} S\) has larger London dispersion forces b. \(CO _{2}\) and CO are two molecules that differ only in structure, with \(CO _{2}\) being linear symmetrical while CO is bent. C. Germanium has larger London dispersion forces than Silicon
London dispersion forces are the intermolecular forces that occur between atoms or molecules due to temporary dipoles. These forces arise due to the movement of electrons and can occur in all types of molecules, regardless of their polarity. The size and number of electrons present in a molecule determine the strength of London dispersion forces. Larger molecules with more electrons have stronger forces than smaller molecules with fewer electrons.
a. In the case of \(H _{2} O\) and \(H _{2} S\), It has larger London dispersion forces. This is because H2S has a larger molecular weight and size than water, which results in more electrons being present in the molecule. This leads to stronger London dispersion forces between the molecules, making it more difficult to separate them.
b. Carbon dioxide and CO are two molecules that differ only in their structure, with Carbon dioxide being linear and symmetrical while CO is bent. The London dispersion forces in these molecules depend on the size of the molecule and the number of electrons present. Carbon dioxide has larger London dispersion forces than CO due to its larger size and the presence of more electrons.
c. Silicon (Si) and Germanium (Ge) are two elements in the same group of the periodic table, and their molecules \(SiH_{4}\) and \(GeH_{4}\) have a similar structure. However, Germanium has larger London dispersion forces than Silicon due to its larger atomic size and mass. This leads to more electrons being present in the molecule and stronger London dispersion forces between the molecules.
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Related Questions
What is a characteristic of straight chained alkanes?
●They have one or more rings of carbon atoms.
●They have carbon atoms that are double-bonded to other carbon atoms. ● They have more than two carbons that are bonded to only one other carbon. ●They have carbons bonded in a single row from one end of the molecule to the other end of the molecule.
Answers
Answer:
● They have more than two carbons that are bonded to only one other
Explanation:
They have carbons bonded in a single row from one end of the molecule to the other end of the molecule. ... The straight-chain alkane has two more hydrogen atoms than the cycloalkane
Answer:
D. They have carbons bonded in a single row from one end of the molecule to the other end of the molecule.
Explanation:
I got it wrong when I chose C - They have more than two carbons that are bonded to only one other carbon. So yeah p.s UNUS ANNUS
Draw the organic product of the reaction between 3-phenylpropyne and d2, pd/c.
Answers
The reaction between 3-phenylpropyne and D2 (deuterium) in the presence of Pd/C (palladium on carbon) is a catalytic hydrogenation reaction. In this reaction, the triple bond of 3-phenylpropyne is reduced to a single bond, resulting in the addition of two deuterium atoms.
The organic product of this reaction is 3-phenylpropane-d2. The triple bond between the carbon atoms in 3-phenylpropyne is converted into a single bond, and two deuterium atoms (D) replace two hydrogen atoms (H). The phenyl group (C6H5) remains intact. The deuterium atoms are isotopes of hydrogen, containing a neutron in their nuclei. Thus, the resulting product, 3-phenylpropane-d2, contains deuterium atoms instead of hydrogen atoms, while the overall structure of the molecule remains the same.
Overall, the reaction between 3-phenylpropyne and D2 in the presence of Pd/C leads to the formation of 3-phenylpropane-d2, where the triple bond is converted to a single bond and two deuterium atoms replace two hydrogen atoms.
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1s22s22p63s23p3 atoms of an element, x, have this electron configuration. The compound most likely formed with magnesium, Mg, is
A. MgX
B. Mg2X
C. MgX2
D. Mgx3
E. MgX2
Answers
Answer:
Mg3X2 is correct answerrrrrr
PLEASE HELP 100 POINTS!!!! AND GIVING BRAINLIEST!!!!!!!!
Why should a movie producer consider filming a new version of The First Men in the Moon? Create a 6-8 slide multimedia presentation to market your idea for this movie to a production company. Rubric Criteria Points Possible 20 (10) 11-19 (6-9) 6-10 (3-5) 0-5 (0-2) Points Earned Ideas & Content Relates Theme of Novel Provides analysis of character Accurate diagram of plot 20 Establishes a theme, relates an analysis of the protagonist, effectively summarizes the plot, and maintains a clear focus throughout. Establishes a theme, identifies some character traits of the protagonist, provides a summary of the plot, and maintains focus throughout. There are a few lapses in focus, but the theme is fairly clear. Presents somewhat of an analysis of character. The plot summary is mostly correct. It is difficult to figure out the theme of the novel. The character analysis is poor or not present. The plot summary does not accurately represent the story. Organization Structure Precision Focus 20 Strong organization; seamless transitions between ideas; Effective and precise content. Organization is appropriate but conventional; Attempt at a focused and precise sales pitch. Attempts at organization, inappropriate use of lists or bullets; content is unfocused and ideas are not developed No clear organizational framework or transitions. Ideas are vague or unfocused Voice Personality Sense of audience 20 Strong awareness of audience in the design. Students can clearly explain why they felt the vocabulary, audio and graphics chosen fit the target audience. Some awareness of audience in the design. Students can partially explain why they felt the vocabulary, audio and graphics chosen fit the target audience. Some awareness of audience in the design. Students find it difficult to explain how the vocabulary, audio and graphics chosen fit the target audience. Limited awareness of the needs and interests of the target audience. Images and Music Relevance to theme Effectiveness Imagery 10 Images and music stir a rich emotional res
Answers
Answer:-Science have researched more facts and cool things about it-It would have more facts and things to learn-The quality would be better and more understandingI just tried 3 quick ideas I hope it can help a bit
Explanation:
Answer:
the answer is you should know this already :)))))))))))))))))))))))))))))))))))))))))))))))))))
Round 0.00054818 to four significant figures
Answers
Answer:
0.0005482
Explanation:
The zeros in front of the 5 are placeholders and do not count as sig figs.
Which solution below has the highest concentration of hydroxide ions?.
Answers
To determine which solution has the highest concentration of hydroxide ions, we need to understand the concept of pH and pOH. pH and pOH are the measures of the acidity and alkalinity of a solution, respectively. The pH scale ranges from 0 to 14, where 0 is highly acidic, 14 is highly basic or alkaline, and 7 is neutral.
The pOH scale ranges from 0 to 14, where 0 is highly basic, 14 is highly acidic, and 7 is neutral.A solution with a pH of less than 7 is acidic, while a solution with a pH of more than 7 is basic or alkaline. Likewise, a solution with a pOH of less than 7 is acidic, while a solution with a pOH of more than 7 is basic or alkaline.
The pH and pOH of a solution are related through the following equation:pH + pOH = 14For example, if the pH of a solution is 2, then the pOH of the solution is:14 - 2 = 12On the other hand, if the pOH of a solution is 4, then the pH of the solution is:14 - 4 = 10Now, to determine which solution has the highest concentration of hydroxide ions, we need to look at the pOH of each solution.
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Choose all the right answers.
An organism is:
a unicellular organism
any cell
only a plant
only an animal
a plant or an animal
Answers
Answer: a unicellular organism & plant or animal
Explanation: a organism is any unicellular plant, animal or single celled life form.
a unicellular organism and a plant or an animal
Which of the following is true of electronegativity?
a) Noble gases are the most electronegative group of the periodic table.
b) The fewer protons found in the nucleus, the greater the electronegativity.
c) It describes the affinity an atom has for an electron.
d) Electronegativity increases as atomic radius increases.
Answers
Answer:
c) It describes the affinity an atom has for an electron.
Explanation:
C quite literally describes what electronegativity is, you can rule out most others by looking at periodic trends as attached below.
2. A sample of gas has a pressure of 195 kPa and a volume of 3.50 L. If the pressure
is increased to 150 kPa, what is the new volume?
Answers
Answer:
4.55 LExplanation:
The new volume can be found by using the formula for Boyle's law which is
\(P_1V_1 = P_2V_2\)
Since we're finding the new volume
\(V_2 = \frac{P_1V_1}{P_2} \\\)
We have
\(V_2 = \frac{195000 \times 3.5}{150000} = \frac{682500}{150000} \\ = 4.55\)
We have the final answer as
4.55 LHope this helps you
Which of the following statement is true?
If I have the same number of moles
I will have different atomic
masses
If I have the same number of moles have a different number of
atoms
If I have the same number of moles I have the same atomic
masses
If I have the same number of moles I have the same number of
atoms
Answers
This is the premise of ‘Avagadro’s Constant’ - which is a number that Avagadro found that is the number of atoms in 1 mole of a substance.
Consider the statement below.
“When nitrogen is liquefied, heat is released.”
Is this statement true or false?
Answers
Answer:
True
Explanation:
It is true because heat is released when a gas changes to a liquid.
Answer:
True
Explanation:just took the test
In what state of matter do the particles spread apart and fill all the space availble to them?
a)energy
b)liquid
c)solid
d)gas
Answers
Because it is a state of matter consist of particles that have a defined volume or shape.
Which of these statements relating to ecological succession is true?
During succession, there is no change to the physical or chemical environment.
During succession, existing species resist interaction with new species.
During succession, new species move into an area and colonize it.
Most ecological successions occur over 10 to 15 years.
Answers
Answer: During succession, new species move into an area and colonize it.
Explanation: Ecological succession refers to the process of change in the composition and structure of an ecosystem over time. It occurs due to the interactions between the biotic (living) and abiotic (non-living) components of an environment. As succession progresses, new species gradually establish and thrive in the area, leading to a change in the species composition. This process can occur over a long period of time, ranging from decades to centuries, depending on various factors such as environmental conditions and the specific type of succession.
Consider the following pair of reactions. Predict the type of substitution mechanism, predict which reaction of the pair will occur at the faster rate, and draw the correct organic product
Answers
The reaction with S_N₂mechanism is likely to be faster than the reaction with S_N₂ mechanism. This is because the carbocation intermediate formed in S_N₁ mechanism is more stable.
The pair of reactions given below is:
CH₃Cl + NaOH→CH₃OH + NaCl
CH₃I + NaOH→CH₃OH + NaI
The type of substitution mechanism:
The first reaction involves S_N₁ mechanism (unimolecular nucleophilic substitution). The second reaction involves S_N₂ mechanism (bimolecular nucleophilic substitution).
Prediction of the reaction that will occur at a faster rate:
The reaction with S_N₁ mechanism is likely to be faster. The rate of this reaction mainly depends on the stability of the carbocation intermediate formed after the initial step. In this case,CH₃Cl reacts to form a tertiary carbocation which is more stable than the primary carbocation formed in CH₃I.
Drawing the correct organic product:
CH₃Cl + NaOH→CH₃OH + NaCl
CH₃I + NaOH→CH_3OH + NaI
CH₃C reacts with NaOHin an S_N₁ mechanism to produceCH₃OH and NaCl.
CH₃ reacts withNaOH in an S_N₂mechanism to produce CH₃OH and NaCI.
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what happens when a pure substance undergoes a chemical change
Answers
What happens to the shape and function of a protein if one of the amino acids is replaced with a different type of amino acid?.
Answers
Depending on how the changed amino acid performs in the body. A protein's ability to function may be completely lost if another amino acid is substituted, where as substituting one may have no discernible impact.
The fundamental molecule used to create proteins is known as an amino acid. Twenty distinct amino acids are available. A gene encodes the sequence of one or more chains of amino acids (known as polypeptides) that make up a protein. While some amino acids (called essential amino acids) can be produced by the body, others (called non-essential amino acids) cannot and must be received through diet. In marketing for food products, the phrase "amino acid" has crept into everyday speech. Some foods, like eggs or quinoa, have been listed as having "large levels of amino acids." And from this point on, you will recognize those labels as referring to a crucial protein component that is functional rather than static.
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4. Which elements have a completely full outermost energy level?
Answers
Answer:
Helium (He), neon (Ne), and argon (Ar), as group 18 elements, have outer electron shells that are full or satisfy the octet rule. This makes them highly stable as single atoms. Because of their non-reactivity, they are called the inert gases or noble gases.
Explanation:
can i get brainliest
The arrangement of element in the modern periodic table is based on?
Answers
The arrangement of element in the modern periodic table is based on metalic and non metallic element
Answer:
The arrangement of element in the modern periodic table is based on
metallic left side of modern periodic tablenon metallic right side of modern periodic tablemetaloid in middle of modern periodic tableWhat is electromagnetic energy
Answers
Answer:
a form of energy that travels through space as waves.
Answer:
Electromagnetic energy is a form of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space
Explanation:
Electromagnetic energy is a form of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space.
Examples are radio waves, microwaves, infrared radiation, visible light – (all colors of the spectrum that we see), ultraviolet light,
X-rays and gamma radiation.
what are the steps of the election process in order )?
Answers
There are 9 steps of the election process Call for Nominations, Preliminary Reviews, Ballot Petition Rules, Nominee Interviews, Committee Meeting, Slate of Candidates Announcement, Voting Opens etc..
Request for Nominations
The nomination process is made public by the Academy.
introductory reviews
Candidates are required to submit biographical sketches that contain digital images, films they have recorded themselves, and curriculum vitae or resumes.
Election Petition Rules
Check out the requirements for adding a petitioner to the general election ballot.
interviewing nominees
Virtual meetings with the Nominating Committee are held.
Commission Meeting
The Nominating Committee meets in late fall to review the materials submitted by candidates, taking into account which positions are open on the ballot, and evaluating key personal, interpersonal, and demonstrated leadership skills as they relate to the qualifications and skill set needs for each position.
Release of the Candidate Slate
Announcing candidates for posts includes posting supporting information online, in the Academy's electronic weekly newsletter, and on social media, including images, self-recorded films, biographical sketches, and answers to questions posed by the Nominating Committee.
Voting begins
Members take part in computerised voting during the month of February for the national Academy elections.
Announcing the results of the election
Following the tallying of all votes and the notification of candidates, the Academy informs members of the election results.
Review of the election and nomination processes
The process for nomination and election is assessed at each stage. The Nominating Committee, the Academy, and the applicants are all asked for their opinions.
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The Concrete that surrounds a swimming pool takes less time to heat up than the water in the pool. Why
Answers
Answer:
The Concrete has a lower specific heat.
Explanation:
if 2.10 mol of nitrogen monoxide gas and 2.70 mol of oxygen gas react, what is the limiting reactant?
Answers
Comparing these values, we see that the amount of NO₂ that can be formed from the NO is less than the amount that can be formed from the O₂. Therefore, NO is the limiting reactant and O₂ is in excess.
The balanced chemical equation for the reaction between nitrogen monoxide (NO) and oxygen (O₂) is:
2 NO + O₂ → 2 NO₂
According to the stoichiometry of the balanced equation, 2 moles of NO react with 1 mole of O2 to produce 2 moles of NO2. Therefore, we can calculate the amount of NO2 that can be formed from the given amounts of reactants:
The amount of NO₂ that can be formed from 2.10 mol of NO is:
2.10 mol NO × (2 mol NO₂ / 2 mol NO) = 2.10 mol NO₂
The amount of NO₂ that can be formed from 2.70 mol of O₂ is:
2.70 mol O₂ × (2 mol NO₂ / 1 mol O₂) = 5.40 mol NO₂
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How much heat is added if 0.2067g of water is increased in temperature by 0.855
degrees C?
Answers
Answer:
0.756 J
Explanation:
Temperature change (delta T) = 0.855 degrees Celsius
Mass of water (m) = 0.2067 g
Specific heat capacity of water (c) = 4.28 J/g degrees C
Heat added = m * c * delta T
= (0.2067 * 4.28 * 0.855) J
= 0.756 J
the half life of phosphorus-32 is 14 days. what is the decay constant? if you start with 1 microcurie, how much is left after 90 days
Answers
The decay constant of phosphorus-32 can be calculated using the formula: after 90 days, only 0.0112 microcuries of phosphorus-32 will remain.
decay constant = 0.693 / half life
Therefore, the decay constant of phosphorus-32 is:
decay constant = 0.693 / 14 days
decay constant = 0.0495 per day
Now, to calculate the amount of phosphorus-32 left after 90 days, we can use the formula:
N = N0 x e^(-λt)
Where:
N = the remaining amount of phosphorus-32 after time t
N0 = the initial amount of phosphorus-32 (1 microcurie in this case)
λ = the decay constant of phosphorus-32 (0.0495 per day)
t = time elapsed (90 days in this case)
Plugging in the values:
N = 1 microcurie x e^(-0.0495 x 90 days)
N = 1 microcurie x e^(-4.455)
N = 0.0112 microcuries
Therefore, after 90 days, only 0.0112 microcuries of phosphorus-32 will remain.
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Which arrow represents the change of state described
above?
The diagram shows changes of state between solid,
liquid, and gas. The atoms of a substance lose energy
during a change of state. Before the change, the atoms
are close together but are able to slide past one another.
gas
a. M
b. N
c. P
d. Q
Answers
Answer:
Q
Explanation:
Answer:
Q
Explanation:
I just took it on ed
Ella makes this table to organize her notes on whether atoms gain or lose energy during the changes of state.
A 2-column table with 2 rows. The first row has entries Gain Energy, Lose Energy. The second row has entries nothing, nothing.
Which changes of state should she place in the column titled "Lose Energy"?
freezing, boiling, and melting
melting, vaporization, and sublimation
sublimation, deposition, and condensation
freezing, deposition, and condensation
Answers
Answer:
D
Explanation:
I took the test
Answer:
D took the test
Explanation:
An oil has a density of .78g/ml and a mass of 3.6kg. what is the volume of the oil?
Answers
Answer:
v = 4.62 L
Explanation:
Necessary Conversion:
1000 g = 1 kg
Density of Oil in kg/mL:
0.78g/ml * (1 kg/1000 mL) = 0.00078 kg/mL
Density Equation (Heart with an arrow through it):
d = m/v
Rewrite to Find Volume (Multiply Both Sides by v/d):
v = m/d
Substitue m and d to Find v:
v = (3.6 kg)/(0.00078 kg/mL)
v = 4615.38 mL
Convert to More Suitable Units (Liters) by Dividing by 1000:
v = 4.62 L
:D
what is the solubility of calcite (caco3) in grams per milliliter at a temperature at which its ksp is 9.87×10-9
Answers
Calcite (CaCO3) has a solubility of 3.14×10^-6 g/mL at a temperature at which its Ksp is 9.87 x 10-9.
The solubility of calcite (CaCO3) can be determined using its Ksp value and the solubility equation for the compound. The solubility equation for CaCO3 is:
CaCO3 ⇌ Ca2+ + CO32-
The Ksp expression for this reaction is:
Ksp = [Ca2+][CO32-]
Since the solubility of CaCO3 is equal to the concentration of Ca2+ and CO32- ions in solution, we can set the solubility to x and plug it into the Ksp expression:
Ksp = (x)(x) = x^2
Now we can plug in the Ksp value and solve for x:
9.87×10^-9 = x^2
x = √(9.87×10^-9)
x = 3.14×10^-5 M
To convert from moles per liter (M) to grams per milliliter, we can use the molar mass of CaCO3 (100.09 g/mol) and the conversion factor of 1 L = 1000 mL:
3.14×10^-5 M × (100.09 g/mol) × (1 L/1000 mL) = 3.14×10^-6 g/mL
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What do the craters on the moon’s surface tell us about its past?
There may be alien life on the moon.
The moon’s surface has been struck with other objects.
There are volcanoes on the moon.
Mountains formed on the moon.
Answers
Answer:
The moon's surface has been struck with other objects.
Explanation:
Answer 1 - Craters are not a sign of alien life as there is nothing directly showing the crater's are not natural phenomena.
Answer 2 - Craters are (normally) produced by the impact force of a foreign object that is moving quickly and collides with an object of larger size.
Answer 3 - Volcanos form mountains and magma tubes, not craters.
Answer 4 - The formation of mountains does not relate to craters in any meaningful way.
Answer: The moon’s surface has been struck with other objects.
Explanation: because those crates were caused by drifting objects such as asteroid's and meteorite's that caused craters in the moon.
the answer is D
Element Dy has 3 known isotopes. If.2% of the sample has a mass of 160
amu, .06% has a mass of 160.9 amu and the remaining has a mass 162
amu, what is the predicted mass of Dy?
Answers
Answer:
this girl in my class is getting a dog
Explanation:
but shes annoying so im hit her