What happened when you placed your bottle system
in cold water?
Answers
Answer:
The water level in the pipe went down.] ... [The hot water in the cup heated up the water particles inside the bottle. They began to move more. Greater motion (kinetic energy) pushed the particles farther apart, resulting in expansion.
Related Questions
Chymotrypsin has an α-helix that contains 2.5 turns. Approximately how many amino acids are involved in this helix?A. 20.25B. 9C. 13.5D. 3.75E. 2.5
Answers
Chymotrypsin has an α-helix that contains 2.5 turns. Approximately 9 amino acids are involved in this helix.
What is chymotrypsin?
The pancreas produces chymotrypsin. Chymotrypsinogen is its precursor. By cleaving peptide bonds in locations Arg15–Ile16, trypsin activates chymotrypsinogen and generates –chymotrypsin. The "oxyanion hole" and the hydrophobic "S1 pocket" are the results of the interaction between the aminic group (-NH3+) of the Ile16 residue and the side chain of Asp194. Additionally, chymotrypsin causes its own activation by cleaving at positions 14, 15, 146, and 148 to create -chymotrypsin, which is both more active and stable than -chymotrypsin. A three-polypeptide molecule with disulfide bonds connecting them makes up the final product.To know more about chymotrypsin, click the link given below:
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I'll give brainliest for a legitimate answer
Can someone give me a legitimately good idea for a chem honors project. It's due May or something so no rush at all but like maybe just an idea. It needs to take at least ten hours total. So if you ever had to do one maybe I could get the idea for it? Something nature related. I live in a super nature-y environment so anything to do with analyzing some sort of chemistry in nature, I don't know, I just need an idea. Thanks.
Answers
Answer:
I don't know if this is what you are looking for but maybe making paints out of things you find outside??? sry if this isn't what you were looking for
reviewe the first karyotype you assembled. how does the position of the centromere change among the different chromosome
Answers
A chromatid's centromere is the area that divides it into two arms. The kinetochore, which connects to the spindle fibres' microtubules, is located around the location of the duplicated chromosome. It aids in the correct division of chromosomes.
The centromere, which is located in the centre, separates the chromosome into two equal arms. Chromosome sub-metacentric or submedian centromere: The centromere is located closer to one end of the chromosome or a little off-center on each chromosome.
The four types of chromosomes—metacentric, submetacentric, acrocentric, and telocentric—are differentiated by the position of the centromere. As was already established, the centromere is easily pictured as the most condensed area of a mitotic chromosome.
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The complete question is:
How does the position of the centromere change among the different chromosome?
A can of coke which is 12.0ml and is at a temperature of 18.0°C is placed into a refrigerator freezer. The
can was accidently left over night and the temperature dropped to -1.00°C. What would happen to the
volume of the coke can?
Answers
Answer:
See below
Explanation:
Volume would decrease to temp of approx 4 C then it would slightly increase to the 1 degree C point but it would still be a smaller volume than at 18 C .
( this assumes a freezing point of - 1.11 C for Coke )
can someone help and give me the right answer it's due today at 5pm i will give brainlist please help
Answers
Convection currents are the underlying cause of tectonic plate interactions that cause geological events, like earthquakes and volcanoes.
A description of the geological event.The tectonic plate interactions and processes that result in the construction of mountains and other landforms constitute the geological event that is taking place. Convection currents, which happen as molten rock rises from the Earth's mantle below the surface and then cools as it flows to the surface, are one of the primary processes generating this creation.
The plates move and interact with one another as a result of this process, which is fueled by the disparity in density between the hot and cold rock. Divergent boundaries, the kind of boundary at which this phenomenon occurs, are brought about by two plates moving apart.
The creation of the Himalayan Mountains is an illustration of this process. The Himalayas were created as a result of the Himalayan Plate colliding with the Eurasian Plate as it steadily moved north.
High peaks, deep valleys, and steep cliffs are some of the physical features that are visible as a result of this process. The highest mountain range in the world is the Himalayas, and Mount Everest is its highest peak.
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Lithium, sodium and potassium all belong to the same group of the periodic table.
What is the link between the electronic structure and the group they belong to?
Answers
Answer:
Yes they are found in same period
Answer:
alkali metals
Explanation:
Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
What state of matter is the "Oxygen" in this chemical equation?
C₂H₂(g) + 2O₂(g) → 2 CO₂(g) + 2 H₂O(g)
O Solid
Liquid
1 point
O Gas
O Aqueous
Clear selection
Answers
Answer:
it is Gas
Explanation:
that is the correct answer
i hope i helped
4 Cu2S
How many sulfur atoms are shown?
Answers
Answer:
there are 4 sulfur atom.
4 copper atoms as well
The number in front of the atom tells how many atoms
What happens to unstable nuclei? (Select all that apply.)
1. They decay into more stable nuclei.
2. Their mass decreases by 50% with each half-life.
3. They emit radiation.
4. They combine to form more stable nuclei.
Answers
The activities which occurs in unstable nucleus from the above choices are:
They decay into more stable nuclei.Their mass decreases by 50% with each half-life.They emit radiation.They combine to form more stable nuclei.The correct answer choices are all 1, 2, 3 and 4.
How unstable nucleus decay into more stable nucleusIt follows that unstable nucleus usually, frequently and most of the time emit radiation and when this occur, it results to decay of substances.
From the task given above, it is crystal clear that that all the choices given above are happenings which occur when an unstable nucleus undergoes radioactive decay.
So therefore, we can now confirm that the nucleus of unstable atoms does decay into more stable nucleus.
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if you had a buret with an initial reading of 1.23 ml and a final volume of 34.56 ml, how much liquid was delivered from the buret?
a.33.33 ml b.-33.33 ml c.33.3 ml d.-33.3 ml
Answers
33.33 mL much liquid was delivered from the buret. Hence, the correct option is A.
The volume of liquid delivered from the buret can be calculated as the difference between the final and initial readings:
Volume delivered = final reading - initial reading
Volume delivered = 34.56 mL - 1.23 mL
Volume delivered = 33.33 mL
A buret is a laboratory apparatus used to dispense and measure volumes of liquid with high accuracy and precision. It is commonly used in titration experiments where a measured volume of a solution of known concentration is added to a solution of unknown concentration until the reaction reaches completion.
Hence, the correct option is A.
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What are the ways of preserving water resources?
Answers
Answer:
☞Check your toilet for leaks. ...
☞Stop using your toilet as an ashtray or wastebasket. ...
☞Put a plastic bottle in your toilet tank. ...
☞Take shorter showers. ...
☞Install water-saving shower heads or flow restrictors. ...
☞Take baths. ...
☞Turn off the water while brushing your teeth. ...
☞Turn off the water while shaving.
why does 4 chlorobenzaldehyde have a higher vapor pressure than 4 chlorobenzl alcohol
Answers
Vapor pressure refers to the pressure exerted by a vapor in equilibrium with its liquid form. It is a measure of the volatility of a liquid and is dependent on the intermolecular forces between the molecules in the liquid state, as well as the temperature.
In comparing 4-chlorobenzaldehyde and 4-chlorobenzyl alcohol, it is seen that 4-chlorobenzaldehyde has a higher vapor pressure than 4-chlorobenzyl alcohol. This is due to the difference in the intermolecular forces between the two compounds.
4-chlorobenzaldehyde is an aldehyde, which has a polar carbonyl group (-C=O) in its structure. This polar group causes a significant dipole-dipole interaction between the molecules in the liquid state, resulting in a relatively weak intermolecular force. On the other hand, 4-chlorobenzyl alcohol is an alcohol, which has a hydroxyl (-OH) group in its structure. The presence of this hydroxyl group increases the hydrogen bonding between the molecules in the liquid state, leading to a stronger intermolecular force compared to 4-chlorobenzaldehyde.
The strength of the intermolecular forces affects the vapor pressure of a liquid. The stronger the intermolecular forces, the greater the energy required to separate the molecules into the vapor state. In the case of 4-chlorobenzyl alcohol, the strong hydrogen bonding between the molecules requires a large amount of energy to overcome, leading to a lower vapor pressure compared to 4-chlorobenzaldehyde.
In conclusion, the higher vapor pressure of 4-chlorobenzaldehyde compared to 4-chlorobenzyl alcohol is due to the difference in the strength of the intermolecular forces between the two compounds, which is affected by the presence of polar and hydrogen bonding groups in their structures.
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What would be the new pressure if 250cm3 of gas at standard pressure is compressed to a volume of 150 cm3
Answers
Answer:
5/3 or 1 2/3 atmospheres.
Explanation:
If the temperature is kept constant then P*V will be constant.
The standard pressure is 1 Atm. so:
250 * 1 = 150 * V
V = 250 / 150
= 5/3 Atm.
The new pressure of gas is 126.66 mm Hg at constant temperature according to Boyle's law.
What is Boyle's law ?
Boyle's law is an experimental gas law which describes how the pressure of the gas decreases as the volume increases. It's statement can be stated as, the absolute pressure which is exerted by a given mass of an ideal gas is inversely proportional to its volume provided temperature and amount of gas remains unchanged.
Mathematically, it can be stated as,
P∝1/V or PV=K. The equation states that the product of of pressure and volume is constant for a given mass of gas and the equation holds true as long as temperature is maintained constant.
According to the equation the unknown pressure and volume of any one gas can be determined if two gases are to be considered.That is,
P₁V₁=P₂V₂
∴P₂=760×250/150=126.66 mm Hg
Therefore, the final pressure of the gas is 126.66 mm Hg.
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In one form of metabolic acidosis, a build up of fixed acids causes the concentration of bicarbonate ions to do what?
Answers
The concentration of bicarbonate ions decreases during metabolic acidosis due to the build-up of fixed acids.
What happens during metabolic acidosis?
Metabolic acidosis occurs when there is an imbalance between the production and excretion of fixed acids. This leads to an excess of fixed acids in the body, such as lactic acid and ketoacids. The excess fixed acids react with bicarbonate ions (\(HCO_{3}^{-}\)) to form carbonic acid (\(H_{2}CO_{3}\)). Carbonic acid then dissociates into water (\(H_{2}O\)) and carbon dioxide (\(CO_{2}\)), which is exhaled. As bicarbonate ions are used up in this process, their concentration decreases in the body.
Thus, bicarbonate ions combine with hydrogen ions to form carbonic acid, which then dissociates into water and carbon dioxide. When fixed acids accumulate in the body, they compete with bicarbonate ions for hydrogen ions, leading to a decrease in bicarbonate concentration and ultimately causing acidosis.
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Temperature depends on the average kinetic energy of the particles in a sample. How does this help explain why a plasma-based light does not have a high temperature? No particles in the plasma have high kinetic energy. The fastest particles have the greatest mass. Most particles in the plasma are heavy, slow, and very low density. The fastest particles transfer most of their energy through collisions.
Answers
Answer:
C: Most particles in the plasma are heavy, slow, and very low density.
Explanation:
i'm smart like dat
Answer:
C is correct
Explanation:
1. Directions: Write TRUE if the statement is correct and FALSE if not. Write your answer on the space provided before each item.
1. Food preservation helps us extend the shelf life of our food.
subject po nito ay
TLE
Answers
Answer:
true
Explanation:
because it's important to be cleaned
• What happens to matter during chemical reactions Are the atoms the same or different before and after the reaction?
Answers
Answer:
only the atoms present in the reactants can end up in the products.
Explanation:
Which correctly lists the three methods of heat transfer?
absorption, conduction, convection
conduction, convection, radiation
convection, absorption, reflection
radiation, conduction, reflection
Answers
explanation: heats transferred using these three methods and all of them are used in different ways, convection is heat through solids, conduction being used as liquid/gas, radiation being used as electromagnetic waves.
hope this helped!!
The correct list of three methods of heat transfer is conduction, convection, and radiation. The correct option is B.
What is heat transfer?A phenomenon known as "heat transfer" occurs when heat is transferred between two physical objects. High temperatures always transfer heat to lower temperatures. A hot body always loses heat to a cool body. Conduction, convection, and radiation are the three processes involved in the transport of heat.
Heat is conveyed via conduction when two things are in direct touch with one another. Convection is the process by which heat is moved within the fluid. Without the usage of particles, electromagnetic waves carry heat during radiation. The heat transfer is triggered by the temperature difference.
Thus, the correct option is B. conduction, convection, and radiation.
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The amount of energy required to remove the outermost electron from a gaseous atom in the ground state is known as.
Answers
Answer: ionization energy
Explanation:
Why do you need to combust benzoic acid before testing the "unknown" sample you are interested in? Why do you need to combust more than one sample of the "unknown" you are testing?
Answers
Various samples of the must be combusted in other to obtain a reliable result.
What is a bomb calorimeter?The bomb calorimeter is used to obtain the energy of a sample. This is called the energy equivalent or the energy value of the sample.
Now, we know that the bomb calorimeter is calibrated by the use of benzoic acid hence it must be combusted first to obtain the basic energy value of the calorimeter.
Various samples of the must be combusted in other to obtain a reliable result.
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You have 1.0 L of 5.0 M NaCl solution.
a) How could you make 1.0 L of 2.5 M NaCl?
b) How could you make 500 mL of 2.0 M NaCl?
c) How could you make 100 mL of 1.0 M NaCl?
Answers
The molarity of a solution is the concentration of a substance in solution, expressed as the number of moles of solute per litre of solution.
Molarity = no of moles ÷ volume
According to this question, we are given three concentrations of NaCl solution. First, we find the no of moles of each as follows:
no of moles of 2.5M NaCl = 2.5 × 1 = 2.5molesno of moles of 2.0M NaCl = 2.0 × 0.5 = 1.0molesno of moles of 1.0M NaCl = 1.0 × 0.1 = 0.1molesNext, we find the mass of each mole given the molar mass of NaCl is 58.5g/mol.
2.5 × 58.5 = 146.25g1.0 × 58.5 = 58.5g0.1 × 58.5 = 5.85gTherefore, how to prepare these solutions is as described above.
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Which of the following elements does not form a diatomic molecule?
A. Chlorine.
B. Nitrogen.
C. Neon.
D. Hydrogen.
Answers
Answer:
C
Explanation:
Neon is a noble gas, which is monoatomic.
Which a balanced chemical equation ? O C 7 H 16 +5O 2 6CO 2 +4H 2 O OB C 7 H 16 +11O 2 7CO 2 +8H 2 O C 7 H 16 +14O 2 7CO 2 +5H 2 O OD . C 7 H 16 +22O 2 14CO 2 +16H 2 O
Answers
Answer: \(C_7H_{16}+11O_2\rightarrow 7CO_2+8H_2O\)
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
The balanced chemical equation is:
\(C_7H_{16}+11O_2\rightarrow 7CO_2+8H_2O\)
is hydrogen a metal or a nonmetal? how many valence electrons does a hydrogen atom have? 15px
Answers
Hydrogen is a nonmetal. A hydrogen atom has one valence electron.
Hydrogen is a chemical element with the symbol H and atomic number 1. It is the lightest and most abundant element in the universe, mainly found in the form of molecular hydrogen. Hydrogen is a nonmetal and is placed on the left side of the periodic table. It is located in group 1, which is known as the alkali metals group, but hydrogen doesn't share properties with alkali metals, so it is considered a nonmetal.
A hydrogen atom has one electron, which is also its valence electron. Valence electrons are the electrons present in the outermost shell of an atom. They are involved in chemical reactions and can be donated, shared, or received by atoms to form chemical bonds. Therefore, hydrogen can only form one bond in its valence shell.
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Atoms of which of the following elements have the most similar chemical
properties as cadmium (Cd) atoms?
A Zinc (Zn)
B Gold (Au)
C Copper (Cu)
D Silver (Ag
free brainlist
Answers
Explanation:
Zinc and Cadmium are in the same group. Elements in the same group have similar characteristics and properties. Hope this helps!
Answer: the answer is A. Zinc (ZN)
Explanation: jus did a quiz with this quest thx for da points good luck :D
What are periods on the periodic table? How many are there?
Answers
Clouds form from liquid water and ice True Or False ? IF U ANSWER QUICK I WILL GIVE U A BRAINLIEST
Answers
Answer:
False
Explanation:
from gas such as vaporization
If you leave in 8 months, how much would you pay for the month to month contract?
A $6,800
B $6,400
C $6,500
D $5,200
Answers
If Cho waits 10 years instead of 5 years, there will be approximately $47.61 more in her account. Rounded to the nearest cent, this is $47.61.
What is the amount earned?The formula for continuous compounding is given by:
A = Pe^(rt)
Where:
A = final amountP = initial amounte = Euler's number (approximately equal to 2.71828)r = annual interest rate (as a decimal)t = time (in years)Using this formula, we can calculate the amount of money in the account after 5 years:
A = 2800e^(0.0035)
A = 2800e^(0.015)
A = 28001.01506
A = 2839.17
So after 5 years, Cho will have $2839.17 in her account.
Now we can use the same formula to calculate the amount of money in the account after 10 years:
A = 2800e^(0.00310)
A = 2800e^(0.03)
A = 28001.03183
A = 2886.78
So after 10 years, Cho will have $2886.78 in her account.
The difference in the amount of money between waiting 10 years instead of 5 years is:
2886.78 - 2839.17 = 47.61
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The complete question is below:
Cho started a savings account with $2800. the account pays 0.3% compounded continuously. cho wanted to withdraw the money after 5 years, but her friend says she should wait until 10 years.
how much more money will be in the account if cho waits 10 years instead of 5 years? round to the nearest cent.
there will be ___$ more in the account after 10 years.
Which of the following has the lowest entropy?
Water Solution
Ice
Water
Water vapor
Answers
Answer:
The answer is D or B but it's D if not try B but I'm sure it's D
Because unlike the closed system, in which the entropic process cannot stop itself.
Hope this helps
A team of scientists claim that they have discovered a new experimental
method for determining percent composition. Which of the following is
necessary for the claim to be considered valid?
A. The method must support the law of conservation of mass.
B. The percent compositions for any two compounds made from the
same elements must be the same.
C. Each atom must contribute the same mass to the compound.
D. All scientists using the new method must get the same results.
Answers
Answer:
Option C
Explanation:
The new method must support the law of definite proportions which means that if one mole of compound is distributed percentage wise then the sum of % share of each element must be equal to one mole of compound and this percentage distribution always remains the same in all conditions
Hence, option C is correct