What happens when the thermal energy of a substance increases?
The motion of the particles in the substance increases, and the temperature of the substance decreases.
The motion of the particles in the substance decreases, and the temperature of the substance increases.
Both the motion of the particles in the substance and the temperature of the substance decrease.
Both the motion of the particles in the substance and the temperature of the substance increase.
Please answer fast
Answer:
D
Explanation:
D: Both the motion of the particles in the substance and the temperature of the substance increase.
I Hope That This Helps!!!
Both the motion of the particles in the substance and the temperature of the substance increase.
Thermal energy is the energy that is generated and measured by heat.Thermal energy cannot be converted to useful work as easily as the energy of systems that are not in states of thermodynamic equilibrium.As the thermal energy of a substance increases, both the motion of the particles in the substance and the temperature of the substance increase.For more information:
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Iron reacts with oxygen gas to produce iron (III) oxide. If there are 52 grams of
iron present in this reaction how many grams of iron (III) oxide are produced
assuming a 100% yield? Also how many liters of oxygen are needed assuming
STP conditions?
Mass of Fe₂O₃ : 74.26 g
Volume of O₂ at STP = 15.624 L
Further explanationReaction
4Fe (s) + 3O₂ (g) ==> 2Fe₂O₃ (s)
mol Fe :
Ar Fe = 56 g/mol
[tex]\tt \dfrac{52}{56}=0.93[/tex]
mol Fe₂O₃ :
[tex]\tt \dfrac{2}{4}\times 0.93=0.465[/tex]
mass Fe₂O₃ :
MW Fe₂O₃ : 159,69 g/mol
[tex]\tt 0.465\times 159,69=74.26~g[/tex]
mol O₂ :
[tex]\tt \dfrac{3}{4}\times 0.93=0.6975[/tex]
volume O₂ at STP(1 mol=22.4 L)
[tex]\tt 0.6975\times 22.4=15.624~L[/tex]
Can someone help me please ? Click the picture
Answer:
Because it lose detectable mass.
Explanation:
Law of conservation of mass states that substances involved in chemical reaction do not lose or gain any mass. So the above reactions don't demonstrate the law of conservation of mass because it lose mass
What do holes in igneous rocks indicate about the cooling process of the magma?
A.The magma cooled too quickly for gas to escape.
B. The molten rock cooled slowly.
C. The magma cooled in layers.
D. The rock cooled with fossils in each of the holes or spaces.
Answer:
B
Explanation:
There was time for the gas to escape from the rock bubbling at the surface
The hole in igneous rocks indicate that the magma cooled too quickly for gas to escape.
What are igneous rocks?Igneous rocks are one of the three main rock types the other two including sedimentary and metamorphic rocks.These rocks are formed by cooling and solidification of lava or magma.
The magma is derived from partial melts in the planet's mantle or crust.Melting is caused by increase in temperature or decrease in pressure or even change in composition.Solidification occurs either below surface which is called as intrusive rocks or on the surface as extrusive rocks.
They are classified according to their texture,mode of occurrence,chemical composition,geometry and mineralogy of rock.The two important variables for classification are mineral composition and cooling history.
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2
4.6 g of sodium reacts with chlorine to produce 11.7 g of sodium chloride.
What mass of chlorine reacted?
Mass of chlorine reacted : 7.1 g
Further explanationThe reaction equation is the chemical formula of reagents and product substances
A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.
Reaction
2Na(s) + Cl₂(g) → 2NaCl(s).
mol Na :
[tex]\tt \dfrac{4.6}{23}=0.2[/tex]
mol NaCl :
[tex]\tt \dfrac{11.7}{58,44 }=0.2[/tex]
limiting reactant = Na(mol NaCl from mol Na, mol ratio : 2 : 2)
mol Cl₂:mol Na=2:1
mol Cl₂ =
[tex]\dfrac{1}{2}\times 0.2=0.1[/tex]
mass Cl₂ :
MW Cl₂ = 71 g/mol
[tex]\tt 0.1\times 71=7.1~g[/tex]
how many miles of iron can be produced from 3.5 moles of Fe2O3 and 6.2 moles of CO
Answer:
4.13 moles of Fe.
Explanation:
Given data:
Moles of iron produced = ?
Moles of Fe₂O₃ = 3.5 mol
Moles of CO = 6.2 mol
Solution:
Chemical equation:
Fe₂O₃ + 3CO → 2Fe + 3CO₂
Now we will compare the moles of iron with CO and Fe₂O₃.
Fe₂O₃ : Fe
1 : 2
3.5 : 2/1×3.5 = 7 mol
CO : Fe
3 : 2
6.2 : 2/3×6.2 = 4.13 mol
The number of moles of iron produced by CO are less it will limiting reactant.
Thus, moles of iron formed in given reaction are 4.13 moles.
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What is the name of the following compound?
CAH₂0?
What is the name of the following compound SO2?
What is the name of the following compound P2F3?
1.calcium monohydroxid
2.sulfur dioxide
3.sry don't know
How many chlorine atoms in 3ZnCl2
Answer:
6 Cl atoms
Explanation:
In one molecule of ZnCl2, we have 2 atoms of Cl
Therefore, in 3 molecules of ZnCl2, we'll have 3(2) atoms of Cl = 6 atoms of Cl.
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In a gas-liquid solution, which of these naturally takes a liquid state?
(A) the solute and the solution
(B) only the solute
(C) only the solvent
(D) the solute and the solvent
(E) the solvent and the solution
(F) only the solution
Answer:
the solvent and solution
Explanation:
Solutions having solute in gaseous state and solvent in liquid state, are called Gas - Liquid Solutions. For example - Solution (mixture) of oxygen in water, mixture of carbon dioxide in water. Coca cola, a beverage, is an example of gas - liquid solution, as it has carbon dioxide dissolved in water.
In a gas-liquid solution, the substances that naturally takes a liquid state is: (E) the solvent and the solution.
Dissolution can be defined as the process of dissolving or dissociating a solute in solid, liquid or gaseous phase into fragmented particles by a solvent in order to form a solution.
Gas-liquid solution that have solute in their gaseous state and solvent in their liquid state.
For liquid and gases, the substance to be dissolved must form a non-covalent bond with the solvent, in order to produce a solution.
In Science, a solute refers to a substance that is typically dissolved in a liquid solvent such as water, coffee, tea, etc., to produce a solution.
Additionally, a solute maybe completely ionized, partially ionized, or it may remain intact during the process of dissolution.
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true or false
Protists are eukaryotes that can be classified as animals, plants, or fungi.
and
Pseudopods produce oxygen and are a source of food for other organisms
6. What is the wavelength, in nm, associated with a photon of energy of 4.36 x 10-18 J? (4.56 x 101 nm)
The numbers in parenthesis is the answer that the teacher gave but I on't know how to get there. Help please!
Answer:
Explanation:
h= e/v
6.022 x 10^23 = 4.36 x 10^-18/ v
v= 6.58 x 10^15
C= lambda x frequency
3.00 x 10^8= 6.58 x 10^15 x lambda
lambda (y)= 4.56 x 10^-8
Answer:
Explanation:
λ = hc/E
6.626 x 10^-34 J-s x 2.998 x 10^8 m-s^-1
4.36 x 10^-18 J
= 4556.13486239
= 4.56 x 10^1 nm
(Help ASAP) in the summer many people in Argentina which is located in the southern hemisphere enjoy going to the beach which diagram to the right shows the position of earth when it is summer in Argentina?
Answer:
I think it's B
Explanation:
A and C are out of the equation because Earth's axis isn't tilted on them and has the entirety of Argentina covered in shadow. The only answer left would be B.
What might happen if you mixed a strong acid with an equally strong base?
Question 4 options:
You would wind up with a pH neutral salt and water
The base would destroy the acid.
You would see an explosive chemical reaction.
The acid would destroy the base.
Answer:You'd wind up with a pH-neutral substance.
Who uses Ionic compounds?
Answer:
scientists
Explanation:
True or False:
C + 02 - CO2
In the chemical reaction above, the coefficient of oxygen is 2.
False
True
Answer:
Explanation:
From the work of Krogh in 1918 until the present time, a very wide range of values for oxygen diffusion coefficients has been reported1–5 ranging from 1.1 × 10−4 to 4 × 10−8 cm2 sec−1.
Can you provide an example for both fission and fusion
Astronomers have found low-energy background radiation in every part of the sky that they have studied. This radiation is taken as evidence of energy remaining from which event?
a) supernovas
b) the big bang
C) collisions of galaxies
D)modern decay of unstable atoms
Answer:
C
Explanation:
collisions of galaxies
The low energy radiations found in space have been evident of collisions of galaxies. Thus, option C is correct.
Astronomers have been dealing with the stars, galaxies, and other space. Outer space has consisted of the various galaxies that have been continuously formed with collisions and movement.
The low energy radiations found in space have been because of the energy that has been liberated due to the collisions of the galaxies. Thus, option C is correct.
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What would be the result on the Insect population if the Bats and Mice were removed?
Answer:
We wouldn't have Coronavirus
Explanation:
In which of the three states of matter are the particles moving at the greatest speed?
Answer:
Gas(this is because we are only considering that there are 3 states of matter, while in reality there are 5.)
Explanation:
There are actually 4 states of matter excluding a 5th one that has just been discovered, but if we consider that there are only 3 states of matter then the particles move the fastest in gases. As the particles are the furthest apart.
HELP!!! I need "2 KClO3 (s) → 2 KCl (s) + 3 O2 (g)" in word form
Can light move through space even though there are no molecules?
Answer:
This means that waves need a medium to propagate, but light waves propagate where no particles are present. ...
How do the test variables (independent variables) and outcome variables (dependent variables) in an experiment compare?
A.
The test variable (independent variable) controls the outcome variable (dependent variable).
B.
The outcome variable (dependent variable) controls the test variable (independent variable).
C.
The test variable (independent variable) and outcome variable (dependent variable) have no affect on each other.
D.
The test variables (independent variables) and outcome variables (dependent variables) are the same things.
Answer/Explanation:
A) The independent(test) variable controls the dependent variable. A good way to think about this is that the independent variable has nothing that effects itself. The dependent variable is 'dependent' or reliant on the independent variable.
Answer:
A
Explanation:
if the reactants of a reaction have one s and four of atoms what will the products have
Answer:
The products will also have one S and four O atoms.
Explanation:
According to Law of Conservation of Matter, " Matter can neither be created nor destroyed, but it can be changed from one form into another".
Sounds that a person hears that never go away can interfere with studying
and sleeping.
A.True
B.False
The chemical equation below shows the burning of magnesium (Mg) with oxygen (O2) to form magnesium oxide (MgO). 2Mg + O2 Right arrow. 2MgO Niven wants to calculate the mass of MgO that is produced by the burning of 28.0 g of Mg. What is the first step in Niven’s calculation?
- Balance the chemical equation.
- Convert grams of Mg to moles.
- Determine whether heat is given off by this reaction.
- Find the number of Mg atoms in the sample.
Answer:
Convert grams of Mg to moles
Explanation:
In stoichiometric calculations, the first thing is always to balance the chemical reaction equation. However, in this particular instance, the equation is already balanced; 2Mg + O2 ---------->2MgO as shown in the question.
Hence, what Niven now has to do is to convert grams of Mg to moles so that the amount of MgO obtained can be calculated and subsequently converted to mass.
Does it require more work to raise a 15 kg block by 4 m
or to raise a 20 kg block by 2 m, if both are moving at
a constant velocity? Draw a free-body diagram to help
solve the problem.
The 15 kg block require more work to raise by 4 meter compare to 20 kg blocks .
The free body diagram is attached below,
We know that, Weight [tex]W=m*g[/tex]
where m is mass of object and g is gravitational acceleration.
Value of [tex]g=9.8m/s^{2}[/tex]
So that, weight is depend on mass of object.
And , [tex]workdone=force*distance[/tex]
Work done require to raise 15kg block by 4 m is,
[tex]W=15*4*g=60g[/tex]
Work done require to raise 20kg block by 2 m is,
[tex]W=20*2*g=40g[/tex]
Hence, The 15 kg block require more work to raise by 4 meter compare to 20 kg blocks .
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What is the density of a substance that has a mass of 42.8 g and a volume of 2.0 cm^3?
Answer:
21.4
Explanation:
Mass = M/V
42.8/2.0 = 21.4
:)
why are gases generally collected by downward displacement of water?
A gas produced in a chemical reaction can be collected by water displacement. Because the gas is collected over water, it is not pure but is mixed with vapor from the evaporation of the water. Dalton's law can be used to calculate the amount of the desired gas by subtracting the contribution of the water vapor.
Explanation:
oxygen gas is collected bye the downwards displacement of water. because it is only slightly solube in water and is less dence than water. this is my answer
Given that 242.2J of energy is required to heat 81.6g of copper from 27.5°C to 35.2°C, find the specific heat of copper.
Answer:
c = 0.39 J/g.°C
Explanation:
Given data:
Energy required = 242.2 J
Mass of copper = 81.6 g
Initial temperature = 27.5°C
Final temperature = 35.2°C
Specific heat capacity of copper = ?
Solution:
Specific heat capacity:
It is the amount of heat required to raise the temperature of one gram of substance by one degree.
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 35.2°C - 27.5°C
ΔT = 7.7°C
242.2 J = 81.6 g ×c × 7.7°C
242.2 J / 81.6 g = c × 7.7°C
c = 3 J/7.7g.°C
c = 0.39 J/g.°C
is this correct? please check
Answer:
A is the correct option
Explanation:
batteries have chemical energy and will convert to electricity and when reached to bulb, it emits light as electromagnetic rays