Answer:
First, the simple part: light exhibits dual nature. It exists as both particles and wave. So light can be considered as “particles” but not molecules.
Determine the heat required to raise the temperature of 9.4 mole of water from 75.0oC to 125oC at atmospheric pressure. Note that water transitions from the liquid to the vapor state. Express your answers in Joules.
The heat capacity required to raise the temperature of 9.4 mole of water from 75.0oC to 125oC at atmospheric pressure is 35429 J.
The following information is available from the question;
Number of moles = 9.4 mole
Initial temperature = 75.0oC
Final temperature = 125oC
Molar heat capacity = 75.38 J/mol °C
Now;
H = ncθ
m = Number of moles of water
c = Molar heat capacity of water
θ = Temperature rise
Substituting values;
H = 9.4 mole × 75.38 J/mol °C × ( 125oC - 75.0oC)
H = 35429 J
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PLEASE HELP ASAP!!
Which statement best describes hydrogen bonding?
The electronegative hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
The electronegative hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction.
The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
The electropositive hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction.
Regarding hydrogen bonding, it is true that the electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
Hydrogen bondings are intermolecular forces among molecules that contain:
A hydrogen atom, which has a positive charge density.An atom that is way more electronegative than hydrogen, such as N, O or F, which has a negative charge density.The hydrogen bonding is formed between H (positive pole) of 1 molecule and the other atom (negative pole) of the other molecule.
Which statement best describes hydrogen bonding?
The electronegative hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction. NO. Hydrogen is electropositive.The electronegative hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction. NO. Hydrogen is electropositive and the other atom is electronegative.The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction. YES.The electropositive hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction. NO. The other atom is electronegative.Regarding hydrogen bonding, it is true that the electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
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Answer:
1.Heat energy is added to the substance, weakening the electrical attraction between molecules.
2.Both the melting point and boiling point are lower.
3. The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
4. dipole
5.Water and ethanol have different molecular structures.
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In a chemical reaction, mass is conserved. This means that
a.
The mass of the products is always twice the mass of the reactants.
b.
The mass of the products stays the same during a chemical reaction
c.
The mass of the reactants stays the same during a chemical reaction
d.
The type and number of atoms in the reactants equals the type and number of atoms in the products
Would the answer be B?
Answer:
yes the answer would be b
one mole of titanium contains how many atoms
6.022 x 10 23 titanium atoms
In 47.88 grams of titanium, there is one mole, or 6.022 x 1023 titanium atoms.
Hope this helps :)
100points and BRAINEST awnser PLEASEEEE HELP
I need help with 2 and three
Answer:
2 H2O → 2 H2 + O. Decomposition of water.
There are 4 hydrogen atoms on the left side of the equation (CH4)
2 on the right side (H2O).
Two oxygen atoms
Explanation:
Explain how the absorbtion of energy affects the speed of the particles in a substance
identify whether each change represents an oxidation or reduction. then determine how many electrons were involved and which side of the reaction they should appear on in the half-reaction.
In a redox reaction, we can identify 2 kinds of half-reactions:
Oxidation: the oxidation number increases.Reduction: the oxidation number decreases.Let's consider the following half-reactions.
Al ⇒ Al³⁺This is an oxidation because the oxidation number increases from 0 to 3+. To balance it, we need 3 electrons on the right side.
Cu²⁺ ⇒ CuThis is a reduction because the oxidation number decreases from 2+ to 0. To balance it, we need 2 electrons on the right side.
2 F⁻ ⇒ F₂This is an oxidation because the oxidation number increases from -1 to 0. To balance it, we need 2 electrons on the right side.
Al ⇒ Al³⁺ is an oxidation and 3 electrons on the right side are needed.Cu²⁺ ⇒ Cu is a reduction and 2 electrons on the left side are needed.2 F⁻ ⇒ F₂ is an oxidation and 2 electrons on the right side are needed.Learn more: https://brainly.com/question/2671074
Identify whether each change represents an oxidation or reduction. then determine how many electrons were involved and which side of the reaction they should appear on in the half-reaction.
Al ⇒ Al³⁺
Cu²⁺ ⇒ Cu
2 F⁻ ⇒ F₂
An atom has 24 protons, 22 neutrons, 27 electrons. What is the atomic mass?
Answer:
46
Explanation:
An atom has 24 protons, 22 neutrons, 27 electrons. What is the atomic mass?
atomic mass = protons + neutrons
24 +22 =46
Poisons are more serious and harmful than toxins if ingested because the _____ is lower. Small amounts of poison can be extremely dangerous.
Answer:
The death is lower
Explanation:
im gonna get a warning watch
How should an amoeba be classified
Explanation:
Amoebas are identified by their ability to form temporary cytoplasmic extensions called pseudopodia, or false feet, by means of which they move about. This type of movement, called amoeboid movement, is considered to be the most primitive form of animal locomotion.
Write the nuclear decay equation for the alpha particle decay of Pu-243
Answer:
Explanation:
The reaction can be represented by this nuclear equation: 23892U → 23490Th + 42He + Energy.
How many Atoms are in a Carbon Molecule??
Answer:
6.023×10^23
Explanation:
as 1 atom of carbon molecules is equal to the Avogadro's number.i.e. 6.023×10^23
Evaluate the carbon dioxide molecule. Explain how to determine if double or triple bonds exist in the molecule. Use details to support your
answer
Answer:
Double Bonds
Explanation:
CO2 has two double bonds going from carbon to the oxygen atoms. Each oxygen atom needs to bond twice and the carbon atom needs to bond four times. Carbon has four valence electrons, and oxygen has six. Carbon shares two of its valence electrons with each of the two oxygen atoms, forming two double bonds.
What molecules have 5 carbon atoms and 12 hydrogen atoms
ANSWER
THE PENTANES
EXPLANATION
he word for5 in Greek is PENT like the 5 sided and 5 angled building in Wachington the PENTagon.
SO C5H12 IS PENTAND BECAUSE IT HAS NO DOUBLE BONDAS IT IS AN ALKANE
SO SO C5H12 IS PENT-ANE PENTANE AND THERE ARE MULTIPLE FORMS OF IT
True or False?
A speed-versus-time graph for a car's motion is a horizontal line at a speed of 12 m/s. The car's acceleration during this time is 12 m/s2
Porphyry copper deposits that are weathered are more valuable than nonweathered deposits because ______.
Porphyry copper deposits describes copper ore bodies which are formed from large copper ore bodies due to the high temperature exerted by magmatic fluid originating below the ore deposit.
Weathered portion of the Porphyry copper resulting from the reaction of hydrothermal fluid are washed to greater depth level below the unweathered portion of the deposit. Copper deposits at greater depth are usually more concentrated with copper than those above.Hence, reason why weathered porphyry are more valuable than unweathered porphyry.
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A molecule contains 16 atoms and undergoes a chemical change. How does the chemical change affect the roral number of aroms of each
element?
A.
It changes to zero.
B.
It decreases.
C.
It remains the same.
D.
It increases
Answer:
When a molecule contains 16 atoms and undergoes a chemical change it changes to zero
Determine the amount of heat energy in joules required to raise the temperature of 7.40g of water from 29.0OC to 46.0 OC Specific heat of water is: 4.184 J/gOC
The amount of heat energy in joules required to raise the temperature of 7.40g of water is 526.35 Joules
The amount of energy is expressed according to the formula expressed as:
[tex]E = mc\triangle \theta[/tex]
m is the mass of water = 7.40grams
c is the specific heat of water = 4.184 J/g⁰C
[tex]\triangle \theta = 46 - 29\\ \triangle \theta = 17^0[/tex]
Substitute the given parameters into the formula:
[tex]E = 7.4 \times 17 \times 4.184\\E=526.3472Joules[/tex]
Hence the amount of heat energy in joules required to raise the temperature of 7.40g of water is 526.35 Joules
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aspartame is the methyl ester of a dipeptide made of phenylalanine and aspartic acid. what are the expected products of the hydrolysis of aspartame?
Aspartame is an artificial sweetener that is 200 times sweeter than sucrose. The expected products from the hydrolysis of aspartame are;
MethanolAmino acids (Phenylanaline)AspartateAspartame is a methyl ester that is gotten from aspartic acid and phenylalanine dipeptide. Aspartame is used by many food companies as a replacement for sugar. It is deemed suitable for consumption.
The hydrolysis of aspartame takes place in the small intestine. There, it is immediately transformed to methanol, phenylalanine, and aspartate.
Further products that are obtained after hydrolysis are; formaldehyde and formic acid.
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how to find valence electrons from electron configuration
Answer:
group 8 noble gases
Explanation:
they are inert gases so have Valence electron configuration
1. What two factors change the speed of the atoms/molecules?
Answer:
With an increase in temperature, the particles gain kinetic energy and move faster. The actual average speed of the particles depends on their mass as well as the temperature – heavier particles move more slowly than lighter ones at the same temperature.
Explanation:
Hope it helps.
What animal have jaws?
Answer:
all of em
Explanation:
they got mouths right
elements in the same period share the same number of:
Answer: electron on the shell of the atom
Explanation: that what I trying to remember
What can you conclude about the symmetry of the C3H5 ion as it actually exists, as regards the bond lengths and the distribution of the positive charge
In the allyl cation, all the bond lengths are equal and the positive charge is delocalized over all the three carbon atoms.
The allyl cation has the formula C2H5+. In the allyl cation, the positive charge is delocalized over the three carbon atoms as shown in the image attached. Hence, relevant resonance structures can be proposed for the allyl cation.
The bond lengths in the allyl cation are intermediate between the bond lengths of double bonds and single bonds. All the bond lengths are equal.
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Select the correct location on the image.
In which area of this volcanic site is the most iron ore likely to be found?
A,B,C, or D?
Answer:
its b because when the lava comes out it would run against the sides and since b is on the side it would run onto b
Explanation:
nuclear reactions can be written out in equation form with information about the nuclei that are produced. in one to two sentences, explain how you would identify the reaction as fusion, and give two different criteria.
Nuclear fusion involves the combination of two light nuclei to form a heavier nucleus with emission of energy.
A nuclear reaction equation is a representation of the change that takes place as one nucleus is converted to another. A nuclear transformation could be any of the following;
Nuclear fissionNuclear fusionTransmutationWe can know that a nuclear fusion is taking place when two nuclei come together to form a larger nucleus and emit energy. I would identify a nuclear fusion when;
Two light atom combine to give a larger nucleusTremendous energy is producedLearn more: https://brainly.com/question/1527403
what is the maximum number of electrons that can occupy the 3 shell of an atom?
The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10)
what is the cathode and anode of k2so4
A sacrificial anode can be used to protect a metal like iron from corrosion. In order for this to work, the anode must be _____ than the metal that it is protecting.
Answer:
more active
Explanation:
