Answer:
Substance X has a smaller mass
Explanation:
The relationship between the mass of the two samples is that the mass of X is smaller compared to the mass of Y.
The specific heat capacity is given as:
C = \(\frac{H}{m x change in temperature}\)
We can see that the higher the specific heat capacity the lesser the mass or simply put, the specific heat capacity of a body is inversely related to its mass.
If the amount of heat is constant i.e the same and the specific heat capacity of X is twice that of Y, then substance X has a smaller mass
Calculate the decrease in temperature when 6.00 L at 20.0 °C is compressed to 4.00 L.
To calculate the decrease in temperature when 6.00 L at 20.0 °C is compressed to 4.00 L, we need to use the ideal gas law, PV = nRT.
How do you calculate temperature drop due to pressure drop?You subtract the final temperature from the starting temperature to find the difference. So if something starts at 50 degrees Celsius and finishes at 75 degrees C, then the change in temperature is 75 degrees C – 50 degrees C = 25 degrees C. For decreases in temperature, the result is negative.Use the formula: k = T1/P1. For example, if a gas at an initial temperature of 300 K and an initial pressure of 100 Pa, drops by 50 Pa, the proportionality constant k = 3 K/Pa = 300/100 = T1/P1. Multiply the drop in pressure by the proportionality constant k to obtain the drop in temperature.First, we need to convert the temperature from Celsius to Kelvin: 20.0 °C + 273.15 = 293.15 KNext, we need to find the initial pressure, using the ideal gas law: P1V1 = nRT, where P1 = initial pressure, V1 = initial volume, n = number of moles, R = ideal gas constant, T = temperature in Kelvin. We know that V1 = 6.00 L, T = 293.15 K, and R = 8.314 J/mol·K. We do not know the value of n, so we can assume it is 1 mole. Therefore, P1 = (nRT) / V1 = (1 x 8.314 x 293.15) / 6.00 = 476.89 J/LFinally, we can calculate the final pressure, using the same equation: P2V2 = nRT, where P2 = final pressure, V2 = final volume. We know that V2 = 4.00 L, T = 293.15 K, and R = 8.314 J/mol·K. Substituting these values into the equation, we get P2 = (nRT) / V2 = (1 x 8.314 x 293.15) / 4.00 = 715.34 J/LTo find the decrease in temperature, we subtract the final pressure from the initial pressure: P1 - P2 = 476.89 J/L - 715.34 J/L = -238.45 J/LSo the decrease in temperature when 6.00 L at 20.0 °C is compressed to 4.00 L is -238.45 J/L.To learn more about temperature refer to:
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Where within the cell does the process of respiration take place?
Answer:
cytoplasm
Explanation:
Answer:
mitochondria
Explanation:
While most aerobic respiration (with oxygen) takes place in the cell's mitochondria, and anaerobic respiration (without oxygen) takes place within the cell's cytoplasm
Which statement best explains the temperatures of a desert environment? A. The high amount of moisture in the air traps heat causing extreme temperature differences. B. The high amount of moisture in the air traps heat causing a very stable temperature range. C. The lack of moisture in the air allows heat to escape quickly at night causing a very stable temperature range. D. The lack of moisture in the air allows heat to escape quickly at night causing extreme temperature differences.
The high amount of moisture in the air traps heat causing extreme temperature differences.
A narrow range of temperatures allows organisms to survive. It varies between five degrees Celsius and thirty-five degrees Celsius. It best describes a desert climate with warm to hot temperatures year-round without a rainy season.
The desert environment is so dry that it supports only very sparse vegetation. There are few trees and shrubs or herbaceous plants that only form a very incomplete ground cover under normal climatic conditions. Deserts form when there is a lack of sunlight due to a lack of moisture. Evaporation is less due to the relatively low water content. There are also fewer clouds reflecting sunlight.
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Answer:
d
Explanation:
You have been asked to determine the thermometer correction for a melting point apparatus. You obtain a pure sample of benzoic acid and determine its melting point range carefully. After several trials, you obtain a very sharp melting point of 125.7 degrees celsius. What is the thermometer correction at this temperature
The thermometer correction at this temperature is =125.7 -122.4
=3.3 degrees celsius
(Very pure benzoic acid has a melting point of 122.4 degrees Celsius.)
ThermometerA thermometer is a device used to measure and display temperature. It normally consists of a short, glass tube that is hermetically sealed, graduated, and has a mercury or alcohol bulb at one end that expands and contracts with temperature changes.
Calibration of thermometers:-A significant source of measurement error in melting points could be our thermometer. It is occasionally possible for ordinary laboratory thermometers to be inaccurate and to read temperatures up to 10°C high or low. we should calibrate your thermometer regularly to identify any errors and be able to make adjustments. This will help us avoid this issue.
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Is foam a conductor or an insulator? Explain.
Answer:
Polystyrene and plastic foam are both used as insulators as they have small air bubbles trapped inside them. This makes them very good insulators because heat energy can't flow through them
Explanation:
if 1.600 moles of a solute are dissolved in enough water to make 400.0 ml of solution, what is the molarity?
The molarity of the solution if 1.600 moles of a solute are dissolved in enough water to make 400.0 ml is 4M
Before we calculate the molarity we should know that molarity is a unit of concentration measuring the number of moles of a solute per liter of solution.
The molarity can be calculated as follows:
as we know, 400 mL = 0.4L
Molarity = moles/volume
molarity = 1.600 moles/ 0.4L
Molarity = 4M
so,The molarity of the solution if 1.600 moles of a solute are dissolved in enough water to make 400.0 ml is 4M
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Which part of experimental design is most important to a scientist when replicating an experiment?.
Answer:
A split-plot design lets us replicate our treatments twice using only 24 runs in a single time period, hence it is the most efficient use of resource.
Explanation:
hope this helps
A compound is analyzed and determined to be 30.4% nitrogen and 69.6%
oxygen. What is the empirical formula of the compound?
Answer:
NO2
Explanation:
The empirical formula represents the simplest whole number ratio of the elements in a compound. According to the question;
30.4% represents 30.4g of nitrogen
69.6% represents 69.6g of oxygen
First, we convert each mass value to mole by dividing by their respective molar masses as follows:
N = 30.4/14 = 2.17mol
O = 69.6/16 = 4.35mol
Next, we divide each mole value by the smallest (2.17)
N = 2.17/2.17 = 1
O = 4.35/2.17 = 2.0046
Approximately, the ratio of N to O is 1:2, hence, the empirical formula is NO2
Please help and thank you
Answer: Its c
Explanation: i did it
How do the farmers use the property of density of cranberries to harvest the crop?
How can humans cut down on the amount of carbon that is in the atmosphere?.
The atmosphere Moves to alternative technologies that use less or less gas.
We can't stop global warming overnight but we can slow and limit global warming by reducing human emissions of heat-trapping gases and soot. Emissions can be reduced by switching to alternative technologies that use less or no gas.
Using public transport carpooling biking and walking reduces the number of cars on the road and greenhouse gases in the atmosphere. Carbon dioxide is removed from the atmosphere by passing the air through large air filters and is stored deep underground. This technology already exists and is being used on a small scale.
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What is the mass of an object with a density of 2g/mL that displaces 1.5mL of water?
O 0.50
O 1.75
O there is not enough information to tell
O 3
Answer:
1.75
Explanation:
if you add
What molecular geometry would be expected for BF3 and NH3?
Answer:
Boron trifluoride would have a trigonal planar geometry.Ammonia would have a trigonal pyramidal geometry.Explanation:
There are three valence electrons in a boron atom.
In boron trifluoride, the central boron atom did not achieve an octet with eight valence electrons. Rather, that boron atom would be electron deficient with only six valence electrons.
Each of the three fluoride atoms would have shared one valence electron with that boron atom, with a total of three boron-fluorine single bonds. On the other hand, all three of the valence electrons of that boron atom would be involved in bonding. Hence, there would be no extra valence electrons to act as lone pairs on that boron atom.
Hence, the central boron atom would have three electron domains (one for each boron-fluorine bond) with none of the electron domains coming from lone pairs. By the VSEPR theory, the geometry of the molecule would be trigonal planar. All four atoms in this molecule would be in the same plane.
There are five valence electrons in a nitrogen atom.
In ammonia, the central nitrogen atom is indeed able to achieve an octet (with eight valence electrons in total.) Three of the five valence electrons of nitrogen would form a total of three hydrogen-nitrogen bonds. The other two valence electrons would form a lone pair.
Hence the central nitrogen atom would have four electron domains (one for each of the three hydrogen-nitrogen bond, and one for the lone pair.) Hence, by the VSEPR theory, the geometry of this molecule would be trigonal pyramidal.
what does command mean
Answer:
TechnologyCommand Data Solutions specializes in empowering your data and content with a high degree of quality and scope. Intelligent data fine-tunes your advertising, and enables your core sales team to work within relevant market zones. This saves a lot of valuable time and increases ROI.
Explanation:
Answer:
Technology Command Data Solutions specializes in empowering your data and content with a high degree of quality and scope. Intelligent data fine-tunes your advertising, and enables your core sales team to work within relevant market zones. This saves a lot of valuable time and increases ROI. We do this with a multi-faceted approach using cutting edge technologies. We also market your content through various channels such as telemarketing and e-mail campaigns, as well as syndication. We further engage your customers through blogs, webinars and webcasts. We closely study your customers’ requirements and arrange meetings when the time is right. This ground work frees up your sales force to focus on its strength: hard core sales. We cleanse your existing database and remove irrelevant data. We enrich it with new, more relevant contact information. We monitor your existing and potential customer profiles and track their technology needs. The moment we sense purchase behavior, you get an instant update.
Name the following straight-chain Alkanes (picture)
Answer:
I don't know about the rest but A is heptane
a 1) How would you make 1 liter of a 10% NaCl solution from a solid stock? Provide details of what kind of containers you would use.
To make 1 liter of a 10% NaCl solution from a solid stock, you will require the following materials and containers.MaterialsSolid NaClDistilled water1-Liter volumetric flask250-mL volumetric flask 2-beakersProcedureTo prepare 1 liter of a 10% NaCl solution, the following procedure should be followed:Measure out 100g of NaCl using a balance.
Measure the weight of an empty 250-mL volumetric flask.Add the NaCl to a 250-mL beaker and add a small amount of distilled water to it to dissolve the NaCl.Carefully pour the dissolved NaCl solution into the 250-mL volumetric flask. Add distilled water to the mark on the flask to make up the volume. Stopper the flask and invert it several times to mix the solution.Measure the weight of the 1-Liter volumetric flask.Add the 250-mL volumetric flask solution to a 1-Liter volumetric flask.Add distilled water to the mark on the flask to make up the volume.
Stopper the flask and invert it several times to mix the solution.The final volume of the solution will be 1 liter of a 10% NaCl solution.PrecautionsEnsure the NaCl has completely dissolved before adding more water to avoid making a less concentrated solution.Measure the weight of the volumetric flask before and after adding the solution to calculate the volume of solution that was added.Use distilled water to prepare the solution.
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what are plasmas properties?
Answer:Plasma is highest energy state of matter.It consists of electrons,protons and neutral particles.
Explanation:(1) Plasma has a very high electrical conductivity .
(2) The motion of electrons and ions in plasma produces it's own electric and magnetic field
(3)It is readily influenced by electric and magnetic fields .
(4)It produces it's on electromagnetic radiations.
What is the name symbol and charge of an ion that contains 15 protons and 18 electrons.
P3 is the symbol for the ion, which consists of 15 protons and 18 electrons.
To start, let's define what an ion is.An atom or a collection of atoms with a charge is an ion. Depending on the process through which the ion is created, the charge might be either positive (+) or negative (-).
1. If the element loses an electron, the ion will be positive (s)
2. If the element involved gained an electron, the ion will be negative (s).
We'll start by locating the element's symbol in order to answer the above-mentioned question. This is attainable as follows:
We learned that the ion had 15 protons from the question that was previously presented. The element's atomic number is this, or 15 protons.
Comparing the atomic sizes now The element whose ion we are searching for is phosphorus, which has the periodic table's corresponding number .
The ion's charge will then be determined. This is attainable as follows:
Electron = 18 Proton = 15
Price =?
Proton - electron equals charge.
Cost: 15 to 18
-3 charge
We will finally determine the ion's symbol. Below is an example to help:
Charge = -3 Proton = 15 Electron = 18
Phosphorus is an element.
P is the element's symbol.
Ion symbol is hence P3.
Consequently, the ion with 15 protons and 18 electrons has the symbol P3.
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In the classical free electron model, the name(s) given to the neglect of electron ion interaction is/are
i. The independent electron approximation
ii. The free electron approximation
iii. The Drude electron - ion approximation
(i) Only
(ii) Only
(i) and (ii)
(iii) Only
in the classical free electron model, the neglect of electron-ion interaction is referred to as the free electron approximation. The correct option is (ii) Only.
This approximation assumes that the interaction between electrons and ions can be ignored, treating the electrons as free particles moving in a periodic potential without any significant influence from the ions. The independent electron approximation, on the other hand, assumes that the behavior of each electron can be considered independently of the others. The Drude electron-ion approximation incorporates electron-ion interactions and is not part of the classical free electron model. Therefore, the correct option is (ii) Only.
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Will mark Brainliest!!! PLEASE HELP
How many moles are in 24.3g of iron (II) oxide?
Mark me Brainliest..... ......
Imagine you start room temperature water and hot copper. If you place the copper into the water what do you expect to happen? Explain your answer in terms of the specific heats of each material. 7. Does your answer to the previous question depend on the amount of each material? If we placed the piece of copper in a lake what would change? What would be the same?
When you place hot copper in room temperature water, the water will heat up and the copper will cool down. The answer to the previous question does depend on the amount of each material.
This happens because of the difference in the specific heat capacity of the two materials.
Specific heat capacity is the amount of energy needed to raise the temperature of one gram of a substance by one degree Celsius. Copper has a lower specific heat capacity than water, which means it takes less energy to change its temperature compared to water. When copper is placed in water, it will transfer some of its heat energy to the water, causing the water to heat up. At the same time, the copper will cool down as it loses some of its heat energy to the water. The amount of temperature change in the water will be greater than the amount of temperature change in the copper because of the difference in their specific heat capacities.
The answer to the previous question does depend on the amount of each material. If you have a larger piece of copper and a smaller amount of water, the water will heat up more and the copper will cool down less. Conversely, if you have a smaller piece of copper and a larger amount of water, the water will heat up less and the copper will cool down more. If we placed the piece of copper in a lake, the water near the copper would heat up, but the effect on the temperature of the whole lake would be minimal due to the large volume of water. The same principle of heat transfer between materials with different specific heat capacities would still apply.
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The outer electronic configuration of the element Mo (Z=42) is:A.5s24d4B.5s14d5C.5s25p4D.4s23d4
The outer electronic configuration of molybdenum (Mo) is represented by the option B: \(5s^1 4d^5.\)
The outer electronic configuration of the element Mo (Z=42), which corresponds to the electron arrangement in the outermost energy level (valence shell), is given by the electron configuration notation.
The electron configuration of molybdenum (Mo) can be determined by referring to the periodic table. Molybdenum is in period 5 and group 6, so its electron configuration can be written as:
\(1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^1 4d^5\)
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What is the name of this formula?
Answer:
Iron(III) Oxide
Explanation:
You can tell that this formula is for the molecule Iron(III) oxide because it has two iron atoms and three oxygen atoms.
Fun Fact: There are three main types of iron oxides, with this being one of them.
Hope this helped! :^)
Adenine has a molecular mass of 135. 1 and consist of 44. 45%c, 3. 73%h, and 52. 82%n by mass. Determine its molecular formula
The molecular formula for Adenine with molecular mass of 135.1 and consist of 44. 45% C, 3. 73% H, and 52. 82% N by mass is C₃H₃₆N₂.
The molecular formula expresses the number of atoms of each element in one chemical molecule.
The definition of a molecular formula is the formula that shows the exact number of atoms in a molecule.
The empirical formula is used to derive the Molecular Formula when the molar mass value is known.
n=empirical formula molar mass/mass
The molecular formula is frequently the same as or an exact multiple of an empirical formula.
We have molecular formula = 135.14
so we need to find each atoms contribution so,
C = 135.14 /44.45 = 3.03
H = 135.14 /3.73 = 36.21
N = 135.14 / 52.82 = 2.55
So we have molecular formula as,
C₃H₃₆N₂.
Adenine is a nucleic acid component, specifically the nitrogenous base in the structure. Adenine is a nitrogenous base present on both DNA and RNA molecules (examples of nucleic acids). Adenine is a compound of Carbon, Hydrogen, and Nitrogen atoms, and elemental analysis can assist in determining the chemical formula.
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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
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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O CHEMICAL BONDING = Drawing Lewis structures for simple organic compounds Draw the Lewis structure for iodoethane (C2H,1). Be certain you include any lone pairs. Ć c с IT ?
The Lewis structure for iodoethane (C2H,1) is as follows.
I - C - C - H
| |
H H
| |
H H
What is a Lewis structure?A Lewis structure, also known as a Lewis dot diagram, is a way to represent the bonding and non-bonding electrons in a molecule. It is named after Gilbert N. Lewis, who introduced it in 1916. A Lewis structure shows the chemical symbol of each atom in the molecule and the electrons that are involved in the chemical bonds. It is used to predict the molecular geometry, reactivity, and other chemical properties of a molecule.
In this structure, the central atom is the carbon atom, and the outer atoms are the hydrogen and iodine atoms. The carbon atoms each have four bonds, which are satisfied by the three hydrogen atoms and the iodine atom. The iodine atom has one lone pair, which is not shown in the structure.
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What is the answer? True or false? Please answer, thank you!
1.) Silver (Ag) has 47 protons, 60 neutrons, and 47 electrons in each atom. Based on this information,
what is the mass number?
Answer:
Explanation:
47 i took the test
Silver (Ag) has 47 protons, 60 neutrons, and 47 electrons in each atom. Based on this information, the mass number of the silver would be 107.
What is the atomic number?The total number of protons present in an atom is known as the atomic number of that atom. The atomic number has no correlation either with the number of neutrons or the number of electrons present inside an atom.
As given in the problem Silver (Ag) has 47 protons, 60 neutrons, and 47 electrons in each atom.
The atomic number of the silver = number of protons
= 47
The mass number of the silver = number of protons + number of neutrons
=47 + 60
=107
Thus, based on the given information the mass number of the silver would be 107.
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a. a main group element with the valence electron configuration 3s23p1 is in periodic group fill in the blank 1 . it forms a monatomic ion with a charge of fill in the blank 2 . b. a main group element with the valence electron configuration 2s22p4 is in periodic group fill in the blank 3 . it forms a monatomic ion with a charge of fill in the blank 4 .
A. the main group element with the valence electron configuration 3s23p1 is in the periodic group p- block element. it forms a monatomic ion with a charge of +3.
B. the main group element with the valence electron configuration 2s22p4 is in periodic group 4, p block element. it forms a monatomic ion with a charge of +4.
The periodic table, also known as the periodic table of the elements, is a rows and columns association of the chemical factors. it's miles widely used in chemistry, physics, and other sciences, and is typically visible as an icon of chemistry.
Periodic table, inside the full periodic desk of the factors, in chemistry, the organized array of all of the chemical factors in order of growing atomic wide variety—i.e., the whole wide variety of protons inside the atomic nucleus.
An atom includes a relevant nucleus which is surrounded by way of one or more negatively charged electrons. The nucleus is undoubtedly charged and consists of one or greater exceedingly heavy particles called protons and neutrons. Atoms are the primary building blocks of depend.
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