which kind of change alters the shape of an object without changing what type of matter it isITS RIELLY SCIENCE
Answers
Answer:
Ice carving. It's still ice, it's not water, and it changes shape while not changing it's matter
Explanation:
Related Questions
what organ can be found in a plant cell but not in its animal cell
Answers
- Explanation is to study cell structure. It is simply a matter of becoming familiar with the organs in the various cells; that is where one starts in biology.
A piece of gold with a mass of 15.23 g and an initial temperature of 54 °C was dropped into a calorimeter containing 28 g of water. The final temperature of the metal and water in the calorimeter was 62°C. What was the initial temperature of the water?
Answers
Calorimetry is the scientific study of the transformation of heat energy. A calorimeter is a device that is used to conduct these types of experiments. It is used to determine the heat transfer that occurs between two bodies that are at different temperatures.In the given problem, a piece of gold with a mass of 15.23 g and an initial temperature of 54 °C was dropped into a calorimeter that contains 28 g of water.
The final temperature of the metal and water in the calorimeter was 62°C. The task is to calculate the initial temperature of the water.Here are the steps to solve the problem:Calculate the amount of heat released by the gold, q Gold.The formula to calculate the heat released by the gold is:qGold = mGold × cGold × ΔTGoldwhere mGold = mass of gold = 15.23 gcGold = specific heat of gold = 0.129 J/g °CΔTGold = change in temperature of gold = (62°C – 54°C) = 8°CPlugging in the given values,qGold = 15.23 g × 0.129 J/g °C × 8°C= 15.23 × 0.129 × 8= 15.73 J Calculate the amount of heat absorbed by the water, qwater.The formula to calculate the heat absorbed by the water is:qwater = mwater × cwater × ΔTwaterwhere mwater = mass of water = 28 gcwater = specific heat of water = 4.18 J/g °CΔTwater = change in temperature of water = (62°C – T°C)We need to find T°C, which is the initial temperature of the water.Substituting the values,qwater = 28 g × 4.18 J/g °C × (62°C – T°C)= 1175.84 – 117.44T°C Calculate the total heat exchange.In an isolated system, the amount of heat gained is equal to the amount of heat lost. Therefore,qGold = – qwater= – 15.73 J= 1175.84 – 117.44T°C- 15.73 = 1175.84 – 117.44T°C- 117.44T°C = -15.73 - 1175.84= -1191.57T°C = 10.14°CTherefore, the initial temperature of the water was 10.14°C.For such more question on calorimeter
https://brainly.com/question/30873343
#SPJ8
If the point of the nail can be approximated as a circle with
radius 2.00 10 m, what is the pressure in megapascals
(MPa) exerted on the wall if a hammer strikes the nail with a
force of 104 N? Use 3.14 for Pi
Answers
Answer:
P = 795.77 Mpa
Explanation:
Given that,
Force exerted by the hammer, F = 10⁴ N
The nail can be considered as a circle with radius of \(2\times 10^{-3}\ m\)
We need to find the pressure exerted on the wall. Pressure is equal to force acting per unit area. So
\(P=\dfrac{F}{A}\\\\P=\dfrac{10^4\ N}{\pi \times (2\times 10^{-3})^2}\\\\P=795774715.45\ Pa\)
We know that, 1 MPa = 1000000 Pa
So, P = 795.77 Mpa
So, the pressure exerted on the wall is 795.77 Mpa.
The intermolecular forces of attraction in hydrogen gas are stronger than those of helium
gas.
a. TRUE
b. FALSE
Answers
Answer:
A
Explanation:
I think this is true letter a
which unit is closest in size to the radius of an atom
Answers
An atom's radius is well under 1 nanometer, or one billionth of a meter.
What is an atom?An atom is a matter particle that defines a chemical element uniquely. An atom is made up of a central nucleus and one or more negatively charged electrons. The nucleus is positively charged and contains one or more protons and neutrons, which are relatively heavy particles.An element is made up of only one type of atom. Atoms are further subdivided into subatomic particles known as electrons, protons, and neutrons. Chemical reactions allow elements to combine to form molecules.The distance between the nuclei of two identical atoms bonded together is used to calculate atomic radius. Atoms' atomic radius decreases from left to right across a period. Atoms' atomic radius generally increases from top to bottom within the atom.To learn more about atom refer to :
https://brainly.com/question/17545314
#SPJ4
n the currently accepted model of the atom, a fuzzy cloud around a hydrogen nucleus is used to represent the
Answers
In the model of the atom, a fuzzy cloud around a hydrogen nucleus is used to represent the general region where the atom's electron is most likely located.
What is an atomic model?An atomic model is a graphic representation and/or diagram used to identify the components of atoms.
An atomic model may have into account all its components (i.e., electrons, protons, and neutrons).
In conclusion, in the model of the atom, a fuzzy cloud around a hydrogen nucleus is used to represent the general region where the atom's electron is most likely located.
Learn more about atomic models here:
https://brainly.com/question/11329764
#SPJ1
Energy can be changed from potential to kinetic.
A.True
B.False
Answers
Answer:
An object has potential energy (stored energy) when it is not in motion. Once a force has been applied or it begins to move the potential energy changes to kinetic energy (energy of motion).
Therefore, true. (Also would u mind giving brainliest, you don't have to hehe)
can someone send the working and answer for this question with formulas used and all
Answers
Answer:
its letter d ..................................
Which event would most likely cause an ecosystem to have the lowest biodiversity and population sizes 3 years later?
O A lava flow creates a new section of land
O A forest fire destroys the plant growth
O A river floods a cornfield
O Clearing land for a highway
Answers
Answer:
Clearing Land for a highway
Explanation:
The other examples are that of naturally occurring disasters and most life in that region have ways to regrow and repopulate in the case of those disasters. While a highway is a manmade object and interrupts the environment to the point that the new animals will not know how to deal with it. That is also why there are a lot of dead deer are found on the side of the road when a new highway is built.
Clearing land for a highway would most likely cause an ecosystem to have the lowest biodiversity and population sizes 3 years later. Therefore, option D is correct.
What is biodiversity ?Biodiversity refers to the variety of life that can be found in a given area, including animals, plants, fungi, and even microorganisms such as bacteria. Each of these species and organisms collaborate in ecosystems to maintain balance and support life, much like an intricate web.
Every one of these exists in delicate balance and lives and works together in ecosystems to sustain and support life on Earth.
Typically, three levels of biodiversity are discussed: genetic diversity, species diversity, and ecosystem diversity. Genetic diversity refers to the various genes found in all plants, animals, fungi, and microorganisms. It can occur both within and between species.
Thus, option D is correct.
To learn more about the biodiversity, follow the link;
https://brainly.com/question/13073382
#SPJ6
Metals are found on the ____ side of the periodic table and typically react by _____.
Answers
Metals are found on the left side of the periodic table and typically react by losing electrons to form positive ions.
Metals are a class of elements that are characterized by their lustrous appearance, high thermal and electrical conductivity, and malleability. They are generally found in the solid state at room temperature, with the exception of mercury, which is a liquid.
Some common examples of metals include copper, iron, gold, silver, aluminum, and lead. Metals can be found in nature in various forms, such as in ores, minerals, or as free elements. They are also widely used in various applications such as construction, transportation, electronics, and medicine.
Metals are typically classified as either ferrous or non-ferrous. Ferrous metals contain iron, and examples include steel and cast iron. Non-ferrous metals do not contain iron, and examples include aluminum, copper, brass, and bronze.
Visit here to learn more about malleability brainly.com/question/1349130
#SPJ11
Which compounds give one singlet in the 1H NMR spectrum? CH3CH3 1461113dichloro22dibromo 1461123dimethyl2butene CH3―C≡C―CH3 CH2═CHCH═CH2 14611cyclohexadione 14611cyclopentane 14611123tribromopropane 14611ketone 14611ester
Answers
Answer:
CH3CH3, 1,3- dichloro-2,2- dibromo, 2-butyne, cyclopentane, 2,3- dimethylbut-2-ene, 2,2,4,4- tetramethlpenta-3-one.
Explanation:
This problem or question has to do with spectroscopy. Spectroscopy is one of the Important aspect of physical Chemistry. It is important because it helps in the identification of chemical samples or compounds. The Nuclear Magnetic field work generally on the principle of absorption of energy.
The following compounds as given in the question above shows singlet in the 1H NMR spectrum.
(1). CH3CH3: shows singlet in the 1H NMR spectrum at 0.86 ppm.
(2). 1,3- dichloro-2,2- dibromo; shows singlet.
(3). 2- butyne shows singlet
(4). Cyclopentane shows singlet.
(5). 2,3 - dimethylbut-2-ene shows singlet.
(6). 2,2,4,4- tetramethlpenta-3-one shows singlet.
Kindly note that I have used the IUPAC naming system to name the Compounds in the question above.
10. Calculate the energy needed, in kJ and in kcal, to completely melt a 20.0 lb bag of ice? (AH fusion = 334 J/g). 11. How much energy, in kJ, is required to raise the temperature of 1.00 lb of gold from 22.0 °C to its melting point of 1064 °C, and then melt the gold at that temperature? The specific heat capacity of gold is 0.128 J/g °C; ΔHfusion = 12.6 J/g).
Answers
724.36 kcal of energy needed to completely melt a 20.0 lb bag of ice, we first need to convert pounds to grams. One pound is equal to 453.592 grams. So, the mass of the ice is :-20.0 lb * 453.592 g/lb = 9071.84 g
we use the given enthalpy of fusion to calculate the energy needed to melt the ice:
Energy = mass * AH fusion = 9071.84 g * 334 J/g = 3031290.56 J
Finally, we convert the energy from joules to kilojoules and from kJ to kcal:
Energy in kJ = 3031290.56 J / 1000 = 3031.29 kJ
Energy in kcal = 3031.29 kJ / 4.184 = 724.36 kcal
11. To calculate the energy needed to raise the temperature of 1.00 lb of gold from 22.0 °C to its melting point of 1064 °C and then melt the gold, we need to break the problem into two parts.
First, we need to calculate the energy needed to raise the temperature of the gold:
Energy = mass * specific heat capacity * ΔT = 1.00 lb * 453.592 g/lb * 0.128 J/g °C * (1064 °C - 22.0 °C) = 6.03 × 10^4 J
Next, we need to calculate the energy needed to melt the gold at its melting point:
Energy = mass * ΔHfusion = 453.592 g * 12.6 J/g = 5.71 × 10^3 J
Finally, we add the two energies together to get the total energy needed:
Total energy = 6.03 × 10^4 J + 5.71 × 10^3 J = 6.60 × 10^4 J or 66.0 kJ
In summary, the energy needed to melt a substance is given by its enthalpy of fusion multiplied by its mass. The energy needed to raise the temperature of a substance is given by its specific heat capacity, mass, and the change in temperature.
To find the total energy needed to both raise the temperature and melt a substance, we need to add the two energies together.
To know more about energy refer here :-
https://brainly.com/question/8630757#
#SPJ11
CH4 + 2O2=CO2+2H2O. how many moles of O2 will be needed to produce 5.0 moles of CO2 from the correctly balanced reaction?
Answers
Answer:
10 moles of O2
Explanation:
Balanced Equation:
CH4 + 2O2=CO2+2H2O
Now,
According to Stoichiometry,
In the reaction,
1 mole CO2 is produced by 2 moles of O2
∴5 moles of CO2 is produced by (2 X 5) moles of O2
= 10 moles of O2
Therefore, to produce 5 moles of CO2, 10 moles of Oxygen is needed.
WILL MARK BRAINLIEST FOR CORRECT ANSWER
Continue reading from Ruby Bridges’s autobiography.
We drove down North Galvez Street to the point where it crosses Alvar. I remember looking out of the car as we pulled up to the Frantz school. There were barricades and people shouting and policemen everywhere. I thought maybe it was Mardi Gras, the carnival that takes place in New Orleans every year. Mardi Gras was always noisy.
As we walked through the crowd, I didn’t see any faces. I guess that’s because I wasn’t very tall and I was surrounded by the marshals. People yelled and threw things. I could see the school building, and it looked bigger and nicer than my old school. When we climbed the high steps to the front door, there were policemen in uniforms at the top. The policemen at the door and the crowd behind us made me think this was an important place.
It must be college, I thought to myself.
–Through My Eyes,
Ruby Bridges
What evidence in the text supports the idea that Bridges did not realize the significance of her first day? Check all that apply.
“I remember looking out of the car as we pulled up to the Frantz school.”
“I thought maybe it was Mardi Gras.”
“As we walked through the crowd, I didn’t see any faces.”
“[The school] looked bigger and nicer than my old school.”
“The crowd behind us made me think this was an important place.”
“It must be college, I thought to myself.”
Answers
Answer: I remember looking out of the car as we pulled up to the Frantz school.”
“I thought maybe it was Mardi Gras.”
“As we walked through the crowd, I didn’t see any faces.”
“[The school] looked bigger and nicer than my old school.”
“The crowd behind us made me think this was an important place.”
“It must be college, I thought to myself.
Explanation:
“I thought maybe it was Mardi Gras.”
“[The school] looked bigger and nicer than my old school.”
“It must be college, I thought to myself.”
How many moles of benzene are in a 156 gram sample of benzene? (answer rounded to the ones place)
Answers
0.92 lbm of water fills a container whose volume is 1.92 ft3. the pressure in the container is 100 psia. calculate the total internal energy and enthalpy in the container. use data from the steam tables. the total internal energy in the container is btu. the enthalpy in the container is btu.
Answers
The total internal energy in the container is 329.77 Btu and the enthalpy in the container is 385.14 Btu.
Using the steam tables, we can determine the specific volume of water at the given pressure and temperature. The specific volume of water is 0.01658 \(ft^3/lbm\).
The mass of water in the container is 0.92 lbm, so the total volume of the water is:
V = m/v = 0.92 lbm / 0.01658 \(ft^3/lbm\) = \(55.539 ft^3\)
Assuming the water is at saturation, we can find the total internal energy and enthalpy by using the values in the steam tables for saturated water at 100 psia.
From the steam tables, the total internal energy of saturated water at 100 psia is 358.05 Btu/lbm, so the total internal energy in the container is:
U = m * u = 0.92 lbm * 358.05 Btu/lbm = 329.77 Btu
From the steam tables, the enthalpy of saturated water at 100 psia is 419.02 Btu/lbm, so the enthalpy in the container is:
H = m * h = 0.92 lbm * 419.02 Btu/lbm = 385.14 Btu
Therefore, the total internal energy in the container is 329.77 Btu and the enthalpy in the container is 385.14 Btu.
Learn more about enthalpy :
https://brainly.com/question/13996238
#SPJ4
2. GAS -solid-liquid = The above Is a diagramatic representation of the changes in the state of matter. Name all the processes Involved from 1 to 6 i) what can bring about one of the changes.
Answers
Note that the diagrammatic representation of all the phases of water is attached accordingly.
The processes involved in the changes between gas, solid, and liquid states of matter are:
Gas to Solid: DepositionSolid to Gas: SublimationLiquid to Gas: Evaporation/Boiling/VaporizationGas to Liquid: Condensation.What can bring about one of the changes?
The changes between gas, solid, and liquid states can be brought about by altering temperature and/or pressure.
For example, decreasing the temperature and/or increasing the pressure can cause a gas to become a liquid or a solid, while increasing the temperature and/or decreasing the pressure can cause a solid or liquid to become a gas. Other factors such as intermolecular forces and molecular structure can also affect the state of matter.
Note that the four phases of matter are gas, solid, liquid, and plasma. In the gas phase, molecules are far apart and move quickly.
In the solid phase, molecules are tightly packed and vibrate in place. In the liquid phase, molecules are close together and move randomly. Plasma is a high-energy state of matter that consists of ionized particles.
Learn more about the Phases of Water:
https://brainly.com/question/14817790
#SPJ1
In the lab you take 50.0 mL of a 40.0 M NaOH solution and then add water to it until it reaches the 500.0 mL mark of the flask. What is the concentration of the new solution?
Answers
Answer:
4.00M NaOH
Explanation:
A 50-ml amount of 40.0M NaOH contains
(40.0 mol NaOH/1 L)×(0.0500L) = 2.00 mol NaOH
Adding enough water to make a 500.0 mL NaOH solution, the new concentration of this solution is
2.00 mol NaOH/0.5000 L = 4.00M NaOH
what would be the symptoms for an air-cooled condenser where the air leaving the condenser is hitting a barrier and recirculating?
Answers
One thing that would be the symptoms for an air-cooled condenser where the air leaving the condenser is hitting a barrier and recirculating is: that there is less heat transfer from the refrigerant to the surrounding environment. Hence this will cause heat to accumulate in the condenser, making the cooling system inefficient.
What is a condenser?A condenser is a heat transfer used in heat transfer systems to cool a gaseous component and condense it into a liquid condition. The latent heat is released by the material and redistributed to the surrounding environment as a result.
The condenser's function is to accept high-pressure gas from the compressor and convert it to liquid. It does this by heat transfer or the notion that heat always moves from a warmer to a colder substance.
The condenser coil, evaporator, expansion valve, and compressor are the components. Each is critical to the overall performance of your unit.
Learn mroe about Condenser:
https://brainly.com/question/15563071
#SPJ1
what ionic compound is gold found in
Answers
Gold is found in various ionic compounds, but one of the most well-known and commercially significant compounds is gold chloride, also known as auric chloride or gold(III) chloride.
The chemical formula for gold chloride is AuCl₃. Gold chloride is an ionic compound composed of gold cations (Au³⁺) and chloride anions (Cl-). It is a yellow-orange solid that is highly soluble in water. Gold chloride can be formed by reacting the gold metal with chlorine gas or by dissolving the gold metal in aqua regia, which is a mixture of concentrated nitric acid and hydrochloric acid.
Gold chloride has several uses and applications. It is commonly used in the field of nanotechnology for the synthesis of gold nanoparticles. These nanoparticles have unique optical, electronic, and catalytic properties, making them valuable in various fields such as medicine, electronics, and materials science.
In addition to gold chloride, gold can also form other ionic compounds with different anions, such as gold bromide (AuBr), gold iodide (AuI), gold sulfide (Au2S), and gold cyanide (AuCN). These compounds have their own unique properties and applications.
know more about anions here:
https://brainly.com/question/31485566
#SPJ8
In what order should the options appear so as to correctly reflect the order of clomiphene's mechanism of action
Answers
The order which reflect clomiphene's mechanism of action include the following:
Secretion of increased amount of follicle stimulating hormone (FSH) and LH (luteinizing hormone).Growth of the ovarian follicle.Ovulation.What is Ovulation?This is the process in which a mature egg is released from the ovary and clomiphene is a medication which induces it.
This is done by the steps mentioned above so as to ensure mature egg is released for fertilization.
Read more about Ovulation here https://brainly.com/question/17044166
#SPJ1
solubility of sodium chloride in water at 27 degree celsius is 22.7 in hundred ml of water the density of water is 1.0 gram per ml calculate the concentration of sodium chloride in term of mass percentage when dissolved in 500 ml of water
please tell me correct answer with solution
Answers
Answer:
of what grade it is of??
Explanation:
tell me then ill answer
what is the equilibrium constant expression (ka) for the acid dissociation of nitrous acid hno2
Answers
The equilibrium constant expression (Ka) for the acid dissociation of nitrous acid (HNO2) is: Ka = [H+][NO2-] / [HNO2]
This expression relates the concentrations of hydrogen ions ([H+]) and nitrite ions ([NO2-]) to the concentration of nitrous acid ([HNO2]) at equilibrium. It represents the extent of acid dissociation and indicates the acid's strength. The dissociation of nitrous acid is represented by the equation: HNO2 ⇌ H+ + NO2-. The equilibrium constant (Ka) expresses the ratio of the product concentrations to the reactant concentration.
Remember that the values in the equilibrium constant expression should be based on the concentrations or activities of the species at equilibrium. Note that the values in the equilibrium constant expression should be based on equilibrium concentrations or activities of the species involved.
Learn more about equilibrium constant here:
https://brainly.com/question/28559466
#SPJ11
According to the kinetic theory, what is the kinetic energy of a gas molecule proportional to? O A volume of the gas B. pressure of the gas OC. temperature of the gas D. density of the gas
Answers
Answer:
Gases consist of particles (molecules or atoms) that are in constant random motion. ... The average kinetic energy of gas particles is proportional to the absolute temperature of the gas, and all gases at the same temperature have the same average kinetic energy.
Where exactly is an orbital? I understand they are a volume where we expect to find electrons 90% of the time but I don't understand where their shapes are and fit on an atom, and the different forms of orbitals confuse me a little. Can someone explain me where they are with the help of an image? Pardon me if my question isn't very clear
Answers
Answer:
95% of the time (or any other percentage you choose), the electron will be found within a fairly easily defined region of space quite close to the nucleus. Such a region of space is called an orbital. You can think of an orbital as being the region of space in which the electron lives
if an atom has an atomic number of 7 and a mass of 15, how many electrons does it contain
Answers
The atomic number for any element is the number of protons in its atomic nuclei. In a neutral atom, the number of electrons are the same as the number of protons. The atomic mass (mass number) is the sum of the protons and neutrons in the nucleus. Mass number can vary due to the fact that the number of neutrons can vary.
a. Consider the following system at equilibrium:
D(aq)+E(aq)<=>F(aq)
Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.
Increase D
Increase E
Increase F
Decrease D
Decrease E
Decrease F
Triple D and reduce E to one third
Triple both E and F
b. The following system is at equilibrium:
2X(s)+4Y(g)<=>Z(g)
Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.
add more X
remove some X
double the volume
halve the volume
c. For a certain chemical reaction:
?H�=-156kJ
Assuming the reaction is at equilibrium, classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.
increase the temperature
decrease the temperature
Answers
a) Rightward shift: 3 shifts. Leftward shift: 4 shifts b) Rightward shift: 1. Leftward shift: c) Rightward shifts: 1 shifts. Leftward shifts: 1, in Equilibrium condition.
a.
- Increase D: rightward shift
- Increase E: rightward shift
- Increase F: leftward shift
- Decrease D: leftward shift
- Decrease E: leftward shift
- Decrease F: rightward shift
- Triple D and reduce E to one third: leftward shift
- Triple both E and F: no shift (because the stoichiometric coefficients are the same for both reactants and products)
b.
- Add more X: no shift (because the reaction is at equilibrium and the concentrations of the reactants and products are already balanced)
- Remove some X: leftward shift
- Double the volume: leftward shift
- Halve the volume: rightward shift
c.
- Increase the temperature: leftward shift
- Decrease the temperature: rightward shift (because according to Le Chatelier's principle, a change in temperature will cause the equilibrium to shift in the direction that absorbs or releases heat)
Learn more about equilibrium here:
https://brainly.com/question/15170312
#SPJ11
QUESTION: What is the main function (job) of the Nervous System?
A. The nervous system controls the breakdown of food into small molecules, which are then absorbed into the body.
B. The nervous system's main job is to move fresh air into your body while removing waste gases.
C. The nervous system controls everything you do, including breathing, walking, thinking, and feeling.
D. The nervous system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Answers
Answer:
It is C
Explanation:
it sends signals to the brain so it would be C
Answer:
C. The nervous system controls everything you do, including breathing, walking, thinking, and feeling.
is the answer
Which quality do scientists exhibit when they invent ways to solve problems and produce new things?
curiosity
skepticism
honesty
creativity
Answers
Answer:
The last one. Creativity.
Explanation:
Creativity makes things happen.
Can someone pls help me I appreciate it
Answers
Answer:
b, e, f
Explanation: