Answer:
1: At temperatures below 542.55 K
2: At temperatures above 660 K
Explanation:
Hello there!
In this case, according to the thermodynamic definition of the Gibbs free energy, it is possible to write the following expression:
[tex]\Delta G=\Delta H-T\Delta S[/tex]
Whereas ΔG=0 for the spontaneous transition. In such a way, we proceed as follows:
1:
[tex]0=\Delta H-T\Delta S\\\\T=\frac{-102kJ/mol}{-0.188kJ/mol-K} \\\\T=542.55K[/tex]
It means that at temperatures lower than 542.55 K the reaction will be spontaneous.
2:
[tex]0=\Delta H-T\Delta S\\\\T=\frac{132kJ/mol}{0.200kJ/mol-K} \\\\T=660K[/tex]
It means that at temperatures higher than 660 K the reaction will be spontaneous.
Best regards!
Charged particles from the Sun follow Earth’s magnetic field to the poles where they create the _______________.
im guessing the Aurora Borealis
how has the study of fossil rocks evolved over time? (personal answer)
Answer:
When an organism dies, it is usually destroyed by other forms of life and by weathering processes. On rare occasions some body parts—particularly hard ones such as shells, teeth, or bones—are preserved by being buried in mud or protected in some other way from predators and weather. Eventually, they may become petrified and preserved indefinitely with the rocks in which they are embedded. Methods such as radiometric dating—measuring the amounts of natural radioactive atoms that remain in certain minerals to determine the elapsed time since they were constituted—make it possible to estimate the time period when the rocks, and the fossils associated with them.
which of the following elements has the highest electronegativity?
A) oxygen
B) nitrogen
C) carbon
D) boron
Answer:
option d) is the correct answer
What is the total volume of water that you have if you calculated that it
weighs 180g?
calculate the mass of 0.5 moles of caco3 in grams with procedure
Answer:
50g
Explanation:
moalr mass of CaCO3= 40g/mol+ 12g/mol+(16g/mol*3)
=52g/mol+48g/mol
=100g/mol
1 mol= 100g
0.5mol=x
by cross multiplication,
0.5*100gmol=x mol
x=50g
How can you know if something has energy?
(Can you explain it in a sentence?)
The initial amount of low-quality energy available from an energy resource is called its net energy.
Answer:
La cantidad de energía disponible de una fuente de energía determinada se denomina recurso energético. La escasez de recursos energéticos (petróleo, carbón y madera) en algunas de las fuentes de energía más utilizadas plantear necesidad de usar otras fuentes investigar el modo más rentable de emplearlas
Explanation:
Answer:
false
Explanation:
its the amount of high-quality energy available from a given quantity of an energy resource minus the high-quality energy needed to make the energy available.
Consider the diagram above. If you placed a rubber duck on the
surface of the water in the middle of the pot, in which direction
would you expect the duck to move?
Answer:
But there is nothing above
What the common uses for Bohrium?
Answer:
Explanation:
Bohrium's most stable isotope, bohrium-270, has a half-life of about 1 minute. It decays into dubnium-266 through alpha decay. Since only a few atoms of bohrium have ever been made, there are currently no uses for bohrium outside of basic scientific research.
Answer:
look it up?
Explanation:
Which statement is true for nuclear reactions but not for chemical reactions?
#
Choice
A.
They convert some energy into mass.
B.
They convert some mass into energy.
C.
They break bonds between atoms.
D.
They form bonds between atoms.
At what temperature does a gas at 1.00 atm and 20 degree Celsius have a pressure of 4.00 atm.
Please help thanks.
Answer:
P1 =4 atm
T1= 20°C
P2=1 atm
T2=?
According to Gay-Lussac's Law or Third Gas Law,
P1T2=P2T1
4×T2=1×20
T2= 20/4
T2= 5°C
Answer At 5°C temperature does a gas at 1.00 atm !
is visible light considered matter true or false
Answer:
Explanation:
false
Hi give me 1 example Of kinetic energy
Answer:
A river flowing at a certain speed comprises kinetic energy as water has certain velocity and mass
Explanation:
Answer: A river flowing at a certain speed or a moving car
Explanation:
A _____ is an area prone to flooding.
A. basin
B. fault line
C. floodplain
D. desert
Answer:
c. floodplain
Explanation:
brainliest please!
Answer:
I think the answer is floodplain.
Explanation:
I hope this helps, have a blessed day.
dose my hair look good
Answer:very blurry but yes
Explanation:
Geothermal energy is produced from a combination of high pressure and the breakdown of______ underground.
Fill in the blank
How many joules are required to melt 80 grams of ice to water at 0 C?
Explanation:
Its value is 6.02 kj/mol. This means for every mole of ice we melt we must apply 6.02 kj of heat. We can calculate the heat needed with the following equation:
q
=
n
×
Δ
H
where:
q
= heat
n
= moles
Δ
H
= enthalpy
In this problem we would like to calculate the heat needed to melt 35 grams of ice at 0 °C. This problem can be broken into three steps:
1. Calculate moles of water
2. multiply by the enthalpy of fusion
3. Convert kJ to J
Step 1: Calculating moles of water
35
g
×
(
1
m
o
l
18.02
g
)
=
1.94
m
o
l
s
Step 2: Multiply by enthalpy of fusion
q
=
n
×
Δ
H
=
1.94
×
6.02
=
11.678
k
J
Step 3: Convert kJ to J
11.678
k
J
×
(
1000
J
1
k
J
)
=
11
,
678
J
Finally rounding to 2 sig figs (since 34°C has two sig figs) we get
q
=
12
,
000
J
One last note, if the temperature were not 0 °C then the ice would have to be heated in addition to melted. This would be a phase change problem combined with a heat capacity problem.
The function of the cell wall is to
A.make a organism rigid
B.provide internal support for an animal
C.control substances going in and out of organisms
D.make a plant cell rigid
Answer:
D.make a plant cell rigid
Explanation:
Cell wall is present only in a plant cell. Option A, B & C are functions of the cell membrane not the cell wall.
[tex] \infty [/tex]
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
D.make a plant cell rigid
thanks hope it helps.The Balanced equation for the combustion of ethene is given below. If 97.7 g of oxygen is used, how much heat energy will be produced?
Answer:
the answer is d. 74.02
Explanation:
When ogyen all together with the different things to get this.
A birthday balloon is filled with 6.4 L of Helium. The pressure changes to 0.87 atm and the balloon expands to occupy a volume of 20.5 L. What was the initial pressure exerted on the balloon in psi?
PLS HELP WITH WORK!!
Answer:
3.97 psiExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we're finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
We have
[tex]P_2 = \frac{6.4 \times 0.87}{20.5} = \frac{5.568}{20.5} \\ = 0.2716.... \\ \\ = 0.27 \: \: \: atm[/tex]
But
1 atm = 14.7 psi
Then 0.27 atm =
[tex] \frac{14.7 \times 0.27}{1} = 3.969 \\ [/tex]
We have the final answer as
3.97 psiHope this helps you
Answer:
3.97 psi
Explanation:
Calculate the Density of the substances below to determine if they will float or sink in water.
Mass
Volume
Density
Float or Sink
45. Substance 1
90 ml
46. Substance 2
450 grams
35 grams
24 grams
70 ml
47. Substance 3
12 ml
Explanation:
If the density of the object is more than that of water, it will sink. Otherwise it will float. The density of water is 1 g/mL.
Substance 1,
Mass, m = 450 g, Volume, V = 90 mL
Density = mass/volume
So,
[tex]d_1=\dfrac{450}{90}\\\\=5\ g/mL[/tex]
It will sink.
Substance 2,
Mass, m = 35 g, Volume, V = 70 mL
Density = mass/volume
So,
[tex]d_2=\dfrac{35}{70}\\\\=0.5\ g/mL[/tex]
It will float.
Substance 3,
Mass, m = 24 g, Volume, V = 12 mL
Density = mass/volume
So,
[tex]d_3=\dfrac{24}{12}\\\\=2\ g/mL[/tex]
It will sink.
Que representa en la reacción química
Na2SO4(s)+H2O(1)=
Answer: The given reaction is a double displacement reaction.
Explanation:
A chemical reaction equation in which both positive and negative ions of two different reactants are exchanged then it is called a double displacement reaction.
For example, [tex]Na_{2}SO_{4} + H_{2}O \rightarrow H_{2}SO_{4} + Na_{2}O[/tex]
Here, hydrogen ions of [tex]H_{2}O[/tex] are replaced by the sodium ions of [tex]Na_{2}SO_{4}[/tex]. Also, sulfate ion of [tex]Na_{2}SO_{4}[/tex] are replaced by oxygen ion of [tex]H_{2}O[/tex].
Thus, we can conclude that the given reaction is a double displacement reaction.
Faster-moving water can carry a greater load.
true or false
Answer:
That is false
Explanation:
Just because it moves faster doesn't mean that it can carry and bigger load.
Answer:
False
Explanation:
can i get brainliest plz
What are some facts about Radon?????
Answer:
Explanation:
Radon is radioactive.
Radon is a naturally occurring radioactive gas.
Radon causes cancer.
Breathing radon can increase your risk of developing lung cancer.
No immediate symptoms.
You must test for radon.
Radon is present indoors and outdoors.
Radon can build up in any building.
Answer: No but I have a three elmos dolls in my basement
Explanation:
How many moles of calcium oxide are formed when 3 moles of calcium react with oxygen?
Answer:
3 moles of Calcium Oxide are formed
Explanation:
Based on the reaction of Calcium Ca, with oxygen, O₂, to produce calcium oxide, CaO is:
2Ca + O₂ → 2CaO
where 2 moles of calcium produce 2 moles of Calcium oxide.
That means, if 3 moles of Ca react in presence of oxygen:
3 moles of calcium oxide are formed
An ideal gas contained in 5.0 liter chamber at a temperature of 37°C. If
the gas exerts a pressure of 2.0 atm on the walls of the chamber, which of
the following expressions is equal to the number of moles of the gas?
a.
(2.0)(5.0)
(2.0) (310)
b. (2.0)(0.0821)
(5.0) (37)
c.
(2.0) (0.0821)
(5.0) (310)
d.
(0.0821) (37)
(0.0821)(5.0)
e.
(2.0)(5.0)
(0.0821) (310)
Answer:
i am doing this in science also i would like to know if u know
Explanation:
-what color is the tube
-is the reaction reversible
-has the reaction reached equilibrium
Answer:
-what color is the tube: Transparent
-is the reaction reversible: what reaction
-has the reaction reached equilibrium: I don't see a reaction
BTW you didn't provide all the information.
Do yall beliven stop animal testing?
now that i do and I also believe adopt don't shop and also no puppy mill.
What is the common uses for Manganese????
identify the state of matter in the box,
Answer:
gas
Explanation:
particles are very far apart
The given diagram represents gaseous state of matter. Both a volume and a definite form are absent from a gas. The separation of gas particles is great.
What is state of matter?Solids, liquids, gases, plus plasma are the four states of matter that may be found in daily life. However, a number of additional states of matter have indeed been found.
Some of these additional states are created when a material transitions among two states of matter and doesn't actually exhibit the characteristics of either state. The most exotic are others. Both a volume and a definite form are absent from a gas. The separation of gas particles is great. The gas in a balloon and the air are two examples of gases. The given diagram represents gaseous state of matter.
Therefore, the given diagram represents gaseous state of matter.
To learn more about state of matter, here:
https://brainly.com/question/9402776
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