A balloon is filled with 10 liters of air at a pressure of 5 atm. What is the pressure of the balloon if the volume is changed to 20 liters
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ok so im pretty sure im not writing the right thing in sooo if someone could give at least one or 2 answers, please that would be nice :)
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H2SO4: Sulfuric
HNO3: Nitric
HC2H3O2: Acetic
H2CO3: Carbonic
C6H8O7: Citric
Two biologists, two chemists, and two physicists go out to dinner and sit at a round table with 6 equally spaced chairs. In how many ways can they sit so that no two scientists of the same type (for example, two biologists) are seated next to each other? (Two seatings that are merely rotations of each other are not considered distinguishably different.)
Why is my approach wrong?
I first seat the biologist to one of the seats, he has one choice. I then seat the other biologist, he has 3 choices. Next, I seat one of the chemists, who has 4 choices. The next chemist then has to choices. Finally, we have the physicists who have no choice but to be in the two remaining seats.
1*3*4*2 = 24.
Why is the answer 32? Please explain, thanks
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By taking into account the different seating possibilities for the biologists, chemists, and physicists, you will find that the total number of valid seating arrangements is indeed 32.
Your approach is incorrect because it does not consider all possible arrangements that satisfy the given conditions. Let's analyze your approach step by step.
You correctly start by seating one biologist, which can be done in 1 way. However, when you proceed to seat the second biologist, you assume that there are 3 choices. This is where the error occurs.
Consider the following possibilities:
If the first biologist is seated at Chair 1, the second biologist cannot be seated at Chair 2 or Chair 6, as they would be sitting next to each other. Therefore, the second biologist can only be seated at Chair 4.
If the first biologist is seated at Chair 2, the second biologist can only be seated at Chair 5.
If the first biologist is seated at Chair 3, the second biologist can only be seated at Chair 6 or Chair 1.
If the first biologist is seated at Chair 4, the second biologist can only be seated at Chair 1.
If the first biologist is seated at Chair 5, the second biologist can only be seated at Chair 2.
If the first biologist is seated at Chair 6, the second biologist can only be seated at Chair 3.
So, there are actually 6 different arrangements for seating the two biologists.
Now, if we continue with your approach, seating the chemists and physicists, we need to consider the additional possibilities that arise due to the constraints of the biologist's seating arrangements.
Therefore, the correct approach would involve considering all possible arrangements that satisfy the given conditions. By taking into account the different seating possibilities for the biologists, chemists, and physicists, you will find that the total number of valid seating arrangements is indeed 32.
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Select the boxes to identify the net force for each stage of the car motion
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The boxes to identify net force for each stage of the car motion is at rest: A, begins to move forward: H, moves at a constant speed: k, slows down: S.
What is net force? The definition of a net force is the total force acting on an item in a single plane. Because it may be used to calculate acceleration, net force is significant because it aids in describing the motion of the item. Unless acted upon by an imbalanced net force, an object in motion will remain in motion, and an object at rest will remain at rest, according to Newton's first law of motion. Therefore, it is possible to forecast an object's motion by knowing the net force acting on it.In general, negative forces are those that move downward or backward, and positive forces are those that move upward or forward. These forces add up to equal the net force.For more information on net force kindly visit to
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PLEASE HELP FIRST GETS BRAINLIEST
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Answer:
c i guess, decrease temperature
I need help on this question
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g Which of the following desribes a Love wave A. It is a surface wave with particle motion that is elliptical B. A special type of P-wave that is the first to arrive and it involves particle motion that is parallel to the direction of propagation C. A body wave with shear horizontal motion. Being a body wave, the wave travels through the body of the Earth. D. A surface wave with shear horizontal motion (side-to-side) with that motion being perpendicular to the propagation direction
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The correct answer to love wave is option D. A surface wave with shear horizontal motion (side-to-side) with that motion being perpendicular to the propagation direction.
A Love wave is a surface wave that exhibits shear horizontal motion. It propagates along the Earth's surface and has a side-to-side motion, perpendicular to the direction of propagation.
Love waves are guided by the interface between different layers of the Earth's crust and uppermost mantle.
They are slower than primary (P) and secondary (S) waves but faster than Rayleigh waves.
Love waves are known to cause significant shaking and can cause damage during earthquakes.
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The law of conservation of energy states that A: energy is always created and destroyed B: energy cannot be created or destroyed C: energy is unable to change forms D: energy should be saved as often as possible
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Answer:
B
Explanation:
This is the First Law of Thermodynamics which states that energy cannot be created or destroyed.
Explain what will happen to the organisms that is affected by human activities.
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Answer:
Human activity is by far the biggest cause of habitat loss.
Humans are now responsible for causing changes in the environment that hurt animals and plant species. We take up more space on Earth for our homes and cities. We pollute habitats. ... Human activity often changes or destroys the habitats that plants and animals need to survive.
Explanation:
Human activities are the various actions for recreation, living, or necessity done by people. For instance it includes leisure, entertainment, industry, recreation, war, and exercise.
Over time, destruction of such habitats leads to reduced biodiversity, weakening the Earth's ecosystems, and ultimately posing a major threat to human life. While, significant tracts of habitat have been lost, and along with them many species of plant and animal, steps can be taken to slow and even reverse the process.
One of the most significant ways in which humans have impacted on the lives of other species is by causing climate change. Many animals, including birds and frogs, now breed much earlier in spring in Britain than they did 20 years ago. Whether or not this is having a harmful effect on them has yet to be determined.
Optical fibres are generally composed of silica, which has a refractive index of 1.44. How
fast does light travel in silica fibre?
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Answer:
from formula,
n = speed of light
speed of light in medium
In Silica,
1.44 = (3e8m/s)/v
v= (3e8m/s)/1.44
v = 20.83e7m/s
v = 20.8 × 10^7m/s.
Light travels in silica at 20.8 × 10^7 m/s.
Can somebody help me answer this?
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Combined Gas Law
If a gas triples its volume and doubles its Kelvin temperature, what would happen to the pressure of the gas?
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The pressure of the gas would now be 2/3 of its initial value.
What is the new pressure of the gas?We know that we can be able to use the ideal gas equation to be able to obtain the parameters that concern gases. In this case, we are dealing with the volume, temperature and volume all at once hence we need to use the general gas equation.
Initial pressure of the gas P1 = P
Final pressure of the gas P2 = ??
Initial volume of the gas V1 = V
Final volume of the gas V2 = 3V
Initial temperature of the gas T1 = T
Final temperature of the gas = 2T
P1V1/T1 = P2V2/T2
P1V1T2 = P2V2T1
P2 = P1V1T2/V2T1
P2 = P * V * 2T/3V * T
P2 = 2/3P
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if .296 j of heat causes a .661 degree c temperature change, what mass of water is present?
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Answer:
m=0.000107 kg
Explanation:
H=m*cp*change in temperature
0.296=m*4182*0.661
m=0.000107 kg
Question 5
Are the two triangles similar? If yes, then complete the similarity statement.
Select all that apply.
ASTRA
S
3
R 5 T
N
4
P
by
6
similarity
Q
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It should be noted that the two triangles are Similar by AA Similarity Criteria.
What is Similarity?If the ratio of one triangle's two sides to another triangle's two sides is the same and both triangles' two sides inscribe the same angle, then two triangles are said to be similar.
AA Similarity Postulate occurs if two angles in one triangle are congruent to two angles in another triangle, then the two triangles are similar.
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Arrange these places in order of how safe they are to live in (safest first): Japan, Spain, Ireland, Australia, Iceland.
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According to World Population Review 2022 the safest country to live are as follows.
Iceland is the safest amongst all.IrelandJapanSpainAustralia is least safe in this particular list.These countries are listed safe by calculating global peace index.
What is global peace index?This index measures the nation's and regions peacefulness and is finally reviewed by Institute of Economic and Peace (IEP).
The role of IEP is to measure peace at the worldwide and country level degree and lets us to evaluate the social, political and financial elements that create peace. Each year the Institute for Economics and Peace produces the Global Peace Index, the world’s main degree of countrywide peacefulness, rating 163 nations in line with their ranges of peace.
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How many atoms are in 25.00 g of B.
1.393 x 10^24 atoms of B
1.333 x 10^23 atoms of B
2.16 x 10^26 atoms of B
2.17 x 10^24 atoms of B
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Answer:
\(\boxed {\boxed {\sf 1.393 *10^{24} \ atoms \ B}}\)
Explanation:
1. Convert Grams to Moles
Use the molar mass (found on the Periodic Table) to convert from grams to moles.
Boron (B): 10.81 g/molUse this value as a ratio.
\(\frac {10.81 \ g \ B }{1 \ mol \ B}\)
Multiply by the given number of grams.
\(25.00 \ g \ B *\frac {10.81 \ g \ B }{1 \ mol \ B}\)
Flip the ratio so the grams of boron cancel out.
\(25.00 \ g \ B *\frac {1 \ mol \ B }{10.81 \ g \ B}\)
\(25.00 *\frac {1 \ mol \ B }{10.81 }\)
\(\frac {25.00 \ mol \ B }{10.81 }=2.312673451 \ mol \ B\)
2. Convert Moles to Atoms
We use Avogadro's Number, 6.02*10²³: the number of particles (atoms, molecules, etc.) in 1 mole of a substance. In this case, the particles are atoms of boron.
\(\frac {6.02*10^{23} \ atoms \ B} {1 \ mol \ B}\)
Multiply by the number of moles we calculated.
\(2.312673451 \ mol \ B *\frac {6.02*10^{23} \ atoms \ B} {1 \ mol \ B}\)
The moles of boron cancel.
\(2.312673451 *\frac {6.02*10^{23} \ atoms \ B} {1 }\)
\(2.312673451 *6.02*10^{23} \ atoms \ B} =1.39269195*10^{24} \ atoms \ B\)
The original value of grams has 4 significant figures, so our answer should have the same. For the number we calculated, that is the thousandth place.
\(1.392\underline69195*10^{24} \ atoms \ B\)
The 6 tells us to round the 2 to a 3.
\(1.393 *10^{24} \ atoms \ B\)
25.00 grams of boron is equal to 1.393*10²⁴ atoms.
the force that one surface exerts on another when the two rub against each other is called _
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Answer:
friction
Explanation:
Provide the missing reagents and organic structures needed to most efficiently produce the target product. The starting material is a cycloalkene, C6H10. Chirality centers must be shown using wedge and hatched bonds (as shown in the product); include hydrogen on any chirality centers.
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The chirality center is represented by a carbon atom bonded to four different substituents - hydrogen (H), methyl group (CH3), hydroxyl group (OH), and bromine (Br). To efficiently produce the target product from the starting material, a cycloalkene C6H10, you will need the following reagents and organic structures:
1. Reagents:
- Bromine (Br2) to perform bromination of the cycloalkene.
- Sodium hydroxide (NaOH) to hydrolyze the bromoalkane intermediate.
- Acetone (CH3COCH3) to dissolve the reagents and act as a solvent.
- Methanol (CH3OH) to react with the hydrolyzed product.
2. Organic Structures:
- The cycloalkene starting material (C6H10) needs to be represented with six carbons arranged in a cyclic fashion.
- The product is a chiral alcohol, which means it has a chirality center. It is shown with a wedge bond pointing towards you and a hatched bond pointing away from you.
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How does the mountain affect an air mass blowing over it?
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Which forces can be represented in a free body diagram
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Movement of the axon membrane potential from -70 mv to -90 mv would be termed a(n
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Movement of the axon membrane potential from -70 mv to -90 mv would be termed hyperpolarization.
What is hyperpolarization ?The word "hyperpolarization" is used to describe a procedure or action that makes a cell's membrane potential more negative than it usually is. When the plasma membrane is polarized, electrical charges of both the positive and negative types are present.
A cell, more precisely a neuron, has a negative membrane potential in relation to its surroundings. Because there are more negative ions (like Cl-) inside the cell, the cell may maintain a moderately negative electrical charge. A neuron's resting potential would typically be about -70 mV.
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What are the three main groups of elements? *
metals, noble gases, and metalloids
metals, non-metals, and metalloids
metals, liquids, and gases
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The three main groups of elements are metals, non-metals, and metalloids.
1. Metals: These elements are typically shiny, conductive to electricity and heat, and have high melting and boiling points. Examples of metals include iron, copper, and gold.
2. Non-metals: Non-metals are typically dull, poor conductors of electricity and heat, and have low melting and boiling points. Examples of non-metals include oxygen, nitrogen, and sulfur.
3. Metalloids: Metalloids have properties that fall between metals and non-metals. They have some characteristics of metals and some characteristics of non-metals. Examples of metalloids include silicon, arsenic, and germanium.
Understanding the groups of elements is important in chemistry because it helps us understand the different properties and behaviors of elements. It allows us to predict how elements will react with each other and how they can be used in various applications.
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The texture of many foods is determined by the physical state of the lipid phase. Which one of these statements is NOT true? a. The solid fat content versus temperature profile plays an important role in determining the texture
b. The morphology of the crystals formed plays an important role in determining the texture
c. The texture of foods containing partially crystalline lipids can be described as "plastic"
d. The polymorphic form of fat crystals is in a glassy state
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d. The polymorphic form of fat crystals is in a glassy state is NOT true.
The statement that the polymorphic form of fat crystals is in a glassy state is not true. Polymorphism refers to the ability of a substance to exist in multiple crystal structures or forms. Lipids, including fats, can exhibit polymorphism, meaning they can crystallize in different arrangements or crystal forms.
When it comes to the texture of foods containing lipids, the polymorphic form of fat crystals does play a significant role. The specific crystal form and arrangement of the lipids can affect the texture of the food, influencing factors such as mouthfeel, creaminess, and stability.
The solid fat content versus temperature profile is an essential factor in determining texture, as stated in option a. The morphology of the crystals formed, as mentioned in option b, also plays a crucial role in texture. Option c is true as well, as foods containing partially crystalline lipids can exhibit a "plastic" texture.
However, option d is not accurate because the polymorphic form of fat crystals can exist in various states, including crystalline and semi-crystalline states, but not in a glassy state. Glassy states are typically associated with amorphous materials rather than crystalline structures.
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Extradition treaties Are binding on the entire international community. Require signatory parties to bind over terrorist suspects at the request of fellow signatories. Serve as international crimes codes. Have never been effective.
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Extradition treaties are binding on the entire international community. They require signatory parties to surrender terrorist suspects upon request. While they serve as international codes for crimes, their effectiveness has been questioned.
Extradition treaties are agreements between countries that establish procedures for the transfer of individuals accused or convicted of crimes. They are binding on the signatory parties and oblige them to extradite terrorist suspects at the request of fellow signatories. These treaties serve as international codes by outlining the legal framework for addressing cross-border crimes.
However, the effectiveness of extradition treaties has been a subject of debate. Challenges arise due to varying legal systems, political considerations, and human rights concerns. Some countries may refuse to extradite individuals based on their own laws or policies, hindering the smooth implementation of these treaties. Furthermore, the complexities and delays in the extradition process can undermine the efficiency and timeliness of bringing terrorists to justice. While extradition treaties aim to enhance international cooperation in combating terrorism, their effectiveness can be limited in practice.
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a chemist is identifying the elements present in a sample of seawater. what characteristic of an element’s atoms always determines the element’s identity?
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The characteristic of an element's atoms that always determines the element's identity is the number of protons in the nucleus. This is also known as the atomic number of the element.
An element is a substance made up of a single type of atom.
Elements can be identified by their atomic number, which is the number of protons in the nucleus of each of their atoms.
Each element has a unique atomic number. This means that no two elements can have the same atomic number.
For example, the element oxygen has an atomic number of 8, which means that all oxygen atoms have 8 protons in their nuclei.
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The complete question is-
A chemist is identifying the elements present in a sample of seawater. What characteristic of an element's atoms always determines the element's identity? In other words, what specific property of an element's atoms uniquely distinguishes it from atoms of other elements, allowing chemists to identify and differentiate between different elements in a sample?
The picture compound has which bond?
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Answer:
There are C - C bonds and C - H bonds.
trust me! I took a test with this question and got 100! :)
Explanation:
what type of hybrid orbitals do you expect for the metal ion in the coordination compound na[agcl2]?
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The silver ion in Na[AgCl₂] is expected to have unhybridized s orbitals and p orbitals involved in coordination bonding.
Explain the geometry of the coordination compound Na[AgCl₂]?In the coordination compound Na[AgCl₂], the silver ion (Ag⁺) has a d10 electronic configuration, which means that it does not require any hybridization to form complex compounds. Therefore, the silver ion in Na[AgCl₂] is expected to have unhybridized s orbitals and p orbitals involved in coordination bonding.
The chlorine atoms in the compound each contribute one electron to form a coordinate covalent bond with the silver ion, resulting in a linear molecular geometry with a bond angle of 180 degrees. Overall, the coordination complex has a tetrahedral geometry with a coordination number of two.
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Plz help I will help give brainliest the last option is 4
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HELP ME PLEASEEEEE!!!!!!!!!!
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Answer:
I dont know what the answer is
Explanation:
What is the name of the following chemical compound?
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Answer:
Lead(IV) iodide
Explanation:
Answer:
Plasmid #50548
Explanation:
lead ions and magnesium ions both have a charge of 2+. predict the ionic equation for this reaction.
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PbMg
Explanation:
Because they both have a charge of 2+, they can be reduced and cancel each other out because 2 and 2 can be reduced to 1
As both the ions have charge of +2 the compound formed is PbMg as the like charges will cancel out each other.
What are ions?An ion is defined as an atom or a molecule which has a net electrical charge. There are 2 types of ions :1) cation 2) anion . The cation is the positively charged ion and anion is the negatively charged ion . As they are oppositely charged they attract each resulting in the formation of ionic bond.
Ions consisting of single atom are mono-atomic ions while which consists of two or more ions are called as poly-atomic ions . They are created by chemical interactions . They are very reactive in their gaseous state and rapidly react with oppositely charged ions resulting in neutral molecules.Ions of opposite charges combine in ionic compounds.
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