The U.S. Treasuries act as benchmark bonds implies that they're measured in terms of the spread with regards to other treasuries.
What is a benchmark bond?A benchmark bond simply means the standard measure of the risk of a bond against the other bonds.
When we say that U.S. Treasuries act as benchmark bonds we mean that yields on other bonds are measured in terms of the spread over treasuries.
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8
in the respiratory system
a.
bronchodilatation
b.
inspiration and expiration
is most affected by rib damage
C.
humidification of the air
d.
movement of mucus from lungs
Answer:8
in the respiratory system
a.
Explanation:
The first electron shell of an atom is complete when it has ___ electrons and the second electron shell is complete when it has ___ electrons and the third electron shell is complete when it has ___ electrons The fir Group of answer choices 2, 4 ,6 4, 8, 20 2, 6, 18 8, 2, 32 2, 8, 18
Answer:
2, 8, 8
Explanation:
The first electron shell always has 2 electrons when it is complete. The second electron shell and 3rd shell can hold 8 when completed.
Silver (ag) has a molar mass of 107. 8682 g, nitrogen has a molar mass of 14. 0067 g, and oxygen has a molar mass of 15. 9994 g. What is the molar mass of silver nitrate, agno3?.
Answer:
M(AgNO3) = 169,8731 g mol
Explanation:
M(Ag) = 107,8682 g mol
M(N) = 14.0067 g mol
M(O) = 15.9994 g mol
M(AgNO3) = M(Ag) + M(N) + 3 x M(O) = 107.8682 + 14.0067 + 3 x 15.9994 =
= 169,8731 g mol
Just sum up all the respective elements' molar mass.
when dynamite explodes, it releases a large amount of light and heat. this is an example of _____.
Answer:
Exothermic reaction
Explanation:
Which element would you find in group 2 that has 3 electron shells?
calcium
strontium
magnesium
aluminum
Magnesium
First shell has 2
Second has 8
Third has 2
Why is it impossible for a solution to become both more basic and more acidic at the same time?
A. An increase in H+ concentration will decrease OH- concentration.
B. H+ and OH- ions cannot exist in the same solution.
C. H+ and OH- react to form water (H2O).
D. Acids only release hydrogen ions in the presence of bases.
An increase in H+ concentration will decrease OH- concentration is the
reason why it's impossible.
What is an Acidic and Basic compound?An acidic compound has the presence of H+ ions in them while basic
compounds have the presence of OH- ions.
In a solution , as the number of Hydrogen ions increases, it leds to a
corresponding decrease in the Hydroxide ions which is the reason why
they can't coexist at the same time.
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A solution cannot be both acidic and basic at the same time because an increase in the H+ concentration will lead to a decrease in OH- concentration in the same solution.
What is pH?pH is the degree of acidity or alkalinity of a solution.
pH = -log [H+]
Also
pOH = -log [OH-]
Mathematically, pH + pOH = 14
Thus, for a given solution, as the pH increases, pOH decreases, and vice versa.
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Hydrogen forms _____ bonds with strongly _______ element
Answer:
Hydrogen bond is formed only by the three highly electronegative elements- fluorine, oxygen and nitrogen.
Imprints of the shells of ocean clams are often found in the rocks of the Appalachian Mountains. What do these imprint fossils MOST likely indicate?
O A. These mountains were once under the ocean.
OB. These mountains once had a more rainy climate.
OC. Mountain river clams evolved from ocean clams,
OD. Ocean clams evolved from mountain river clams.
Which impact is the greatest negative of a new hydroelectric dam?.
The negative impact of the hydroelectric dam is local drought and massive flood by dam breakage.
The hydroelectric dam is the local water storage body that is used to convert the energy of the water to electrical energy. The plants are a huge source of electricity.
What is the dam's negative impact?The dam is prepared in order to collect the local water in the bodies for the production of electricity. The collection of water required a larger force and pressure-bearing ability, thus dams are constructed with high-quality material.
The dams provide hydroelectricity, but the collection of water has been caused by the local drought conditions in the area. The dam breakage leads to massive floods as well.
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what is the acid name for H(HS)
need help asap
The acid name for H(HS) is hydrogen sulfide.
Properties of hydrogen sulfidHydrogen sulphide is an example of a weak acid that is form by the exposure of many metals and non metals to water.
The International Union of Pure and Applied Chemistry (IUPAC) acidic name for H( HS) is hydrogen sulfide. But is also called sulfane, sulfur hydride, sour gas, sulfurated hydrogen, hydrosulfuric acid.
The properties of hydrogen sulfide include:
In low concentrations it smells like rotten eggs,H(HS) is soluble in water and many other liquids,H(HS) is highly explosive,lH(HS) is colourless and has a reflective ratio very similar to that of air.Therefore, the acid name for H(HS) is hydrogen sulfide.
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if you are rationed to 32 gills of fresh water a day. how many liters is this?
Answer:
3.8 LITERS
Explanation:
Does the entropy of the surroundings increase for spontaneous processes?.
From the statement of the second law of thermodynamics, the entropy of the surroundings increases for spontaneous processes.
What is the second law of thermodynamics?According to the second law of thermodynamics, we know that the entropy of surroundings or the universe would always increase in a sponteanous process.
Having said this, it is natural fall out of the law stated above that the entropy of the surroundings increases for spontaneous processes.
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What does the dropping liquid create
What characteristics best describe an asteroid?
It revolves around a planet and is larger than the planet.
It revolves around a planet and is much smaller than the planet.
It revolves around the sun and is much smaller than a planet.
It rotates on its axis and is the center of the solar system.
Answer:
C
Explanation:
Take my word.
Hope this helped.
Answer:
C: It revolves around the sun and is much smaller than a planet.
Explanation:
An asteroid is a rocky or metallic object that orbits, revolves around, the Sun and is much smaller than a planet. - Trust your Teacher here.
How many moles of xenon trioxide are present in 1. 69 grams of this compound.
Answer:
0.00944
Explanation:
Xenon mass number on the periodic table: 131.29
Oxygen mass number: 16.00
Add them to find the molar mass of xenon trioxide: 131.29+3(16) = 179.29g/mol
Convert this to moles
[tex]1.69g * \frac{mol}{179.29g} = 0.00944mol[/tex]
Suppose that two hydroxides, MOH and
M′(OH)2, both have a Ksp of 2.15 × 10−12
and that initially both cations are present in
a solution at concentrations of 0.001 mol/L.
At what pH will the hydroxide precipitate
when solid NaOH is added to the solution?
This problem is providing us with the solubility product of two hydroxides, which can be used to calculate the pH at which they will precipitate. At the end, the answer turns out to be 9.67.
Solubility product:In chemistry, we use solubility products in order to quantify the amount of precipitate a solid will be leftover after dissolving it. Thus, we can just write the equilibrium expressions and solve for x, molar solubility, for each hydroxide as follows:
[tex]Ksp=[M^+][OH ^-]\\\\2.15x10^{-12}=(0.001+x)(x)\\\\x=2.15x10 ^{-9}M\\\\Ksp=[M^2^+][OH ^-]^2\\\\2.15x10^{-12}=(0.001+x)(x)^2\\\\x=4.535x10 ^{-5}M\\\\[/tex]
Then, since both x's contribute to the concentration of hydroxide ions, but just the second one is predominant, we add them together to get the total:
[tex][OH^-]=4.535x10^{-5}M+2.15x10^{-9}M=4.535x10^{-5}M[/tex]
Finally, we calculate the pOH and pH with:
[tex]pOH=-log(4.535x10^{-5})=4.343\\\\pH=14-pOH=9.67[/tex]
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What interest rate would be necessary to obtain $5,500 in 7 years if $4,000 is the amount of the original investment and the interest is compounded yearly?.
Given what we know, we can confirm that the interest rate necessary to reach $5500 in 7 years with a starting investment of $4000 on a yearly compounded interest, would be 4.7%.
Why is this the required interest rate?Since the question did not specify any extra data to be taken into account, such as:
Interest varianceMonthly or yearly contributionsInflation ratesand so on, we can assume that all of these values are null. Therefore, if we take $4000 and add 4.7%, and repeat that every time using our new totals, after 7 repetitions we are left with close to $5500, which is our goal.
Therefore, we can confirm that the interest rate necessary to reach $5500 in 7 years with a starting investment of $4000 on a yearly compounded interest, would be 4.7%.
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Can y'all please help me
thank you
Answer:
When water moves through the water cycle, it changes between these states of matter over and over again. The water cycle is the process that moves water between the air and Earth's surface. ... With enough energy, the molecules of liquid water change into water vapor and move into the air. Think of the many ways that the hydrosphere and the atmosphere connect. ... The geosphere, in turn, reflects the sun's energy back into the atmosphere. The biosphere receives gases, heat, and sunlight (energy) from the atmosphere. It receives water from the hydrosphere and a living medium from the geosphere.
What are the functions of nervous system
Answer:
Your nervous system is your body's command center. Originating from your brain, it controls your movements, thoughts and automatic responses to the world around you. It also controls other body systems and processes, such as digestion and breathing.
Sound waves are what type of waves?
longitudinal wave.... is the right answer
# Good morningSince sodium chloride is classified as a compound, a sample of it contains:.
Which process causes minerals to become concentrated in certain areas.
Answer: Volcanic activity.
Explanation:
how many unbonded pairs of electrons are found on the alanine molecule
Answer:
I'm hoping this helps!! it's on quizzes if you're wondering
What type of chemical bond involves the sharing of a pair of electrons by two atoms in a molecule.
Answer:
Covalent bond.
Explanation:
There are two kinds of chemical bonds: covalent bonds and ionic bonds.
A covalent bond is formed when two atoms share a pair of electrons (two electrons for each bond.)Ions are formed when one atom transfers an electron to another. Ionic bonds refer to the attraction between ions of opposite electric charges.In this example, since the atoms are sharing atoms, the chemical bond between them would be a covalent bond.
Draw the electron dot structure for the hydrogen carbonate ion hco3-. Carbon is the central atom, and hydrogen is attached to oxygen in this polyatomic anion.
Explanation:
this is your answer hope it will help you
How many protons and electrons does oxygen have? What about hydrogen? Draw a model of each atom if that helps you think about the differences between them ?
Answer:
Two electrons fit in the first shell out from the nucleus and eight fit in the second. Every element with more protons than the two of Helium needs to work on shells outside the first one. one you get to ten, you have filled the first two shells.
In a water molecule, oxygen forms one covalent bond with EACH of TWO hydrogen atoms. As a result, the oxygen atom has a stable arrangement of 8 valence electrons. Each hydrogen atom forms only one bond because it needs only two electrons to be stable.
Why does potassium permanganate need to be standardized right before a titration?.
Consider the chemical equation in equilibrium. 2H2(g) O2(g) Double headed arrow. 2H2O(g) What will happen if the pressure of the system is increased? The reaction will not change. The reverse reaction will be favored. The reaction will stop completely. The forward reaction will be favored.
The increase in pressure of the system results in the reverse reaction. Thus, option C is correct.
The balanced chemical equation for the reaction is given as:
[tex]\rm 2\;H_2\;+\;O_2\;\leftrightharpoons \;2\;H_2O[/tex]
The pressure is the force applied by the molecules in the mixture and to the wall of the container. The increase in the pressure results in the increased collision of the molecules.
The increase in collisions results in the degradation of the product molecules. Thus, the reaction will process towards the left in the reverse direction
The increase in pressure of the system results in the reverse reaction. Thus, option C is correct.
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Answer: Its not C!!!
Explanation:
Describe and explain the trend in atomic a.radius within the group.Explain the difference between the size of b.the atoms and the size of the ions.
Answer:
A. The atomic radius increases (in a group) with the increasing atomic number. This is because atomic size generally increases from top to bottom within a group because the greater the number of protons means the greater amount of electrons. The amount of electrons in orbitals determine an atom's size/radius.
B. Since Group 1A (Alkali Metals) are metals, they tend to form cations. Cations are always smaller than their original atom because the greater positive charge from the nucleus closes in the space between it and the electrons, thus "shrinking" its size. This is why the ionic radii are smaller than the atomic radii of the same element.
I hoped this helped <3
Explanation:
How would understanding the properties of matter be helpful.
Explanation:
Matter is the basic unit of all things in the world, whether living or nonliving. It is not only useful in chemistry, but also to other fields of science like physics. Physics deals with motion, so it has something to do with matte especially the movement of molecules for solids and fluids.
