If heat or energy is absorbed during a chemical reaction, then the reaction is considered as an endothermic reaction. The enthalpy change of an endothermic reaction is positive.
What is an endothermic reaction ?The reaction in which heat energy is absorbed by the reactants is called an endothermic reaction. The enthalpy change in an endothermic reaction is positive.
The reaction in which heat is evolved from the system to the surroundings is called an exothermic reaction in which the enthalpy change is negative.
By absorbing heat energy, reactants becomes energetic enough to overcome the barrier potential of the reaction. Therefore, the potential energy diagram of an endothermic reaction will show less energy for reactants than that of products.
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What is true of a reaction that has reached equilibrium?
The reaction rate is zero.
The reaction rates of the forward and reverse reactions are equal.
The rate of the forward reaction is greater than the rate of the reverse reaction.
The rate of the forward reaction is less than the rate of the reverse reaction.
HELP ASAP!! If a liquid substance is transferred to a different container, what can be predicted about the volume of the liquid in the new container? A. This cannot be predicted. B. The volume will decrease. C. The volume will stay the same. D. The volume will increase.
Answer:
C. The volume will stay the same
Answer:
C
Explanation:
The volume stays the same no matter the container its in
Which Plate Borders the Philippine Plate?
African
Antarctic
Eurasian
North American
7
7
FARNE
PUPPE
PLATE
CARICANTE
PACIFIC
PLATE
COCOS
PURTE
SOUTH AMER
PLATE
AUSTRALIAN
PLATE
NAZCA
PUTE
SCOTA PLATE
AN
Which plate borders the Philippine Plate?
African
Antarctic
Eurasian
North American
Mark this and return
O
DE
UL
Answer:
Eurasian
Explanation:
The Pacific plate is subducting beneath the Philippine Sea plate to the east while the west/northwestern part of the Philippine Sea plate is subducting beneath the continental Eurasian plate.
What atoms make up one molecule of water?
A. 2 Hydrogen, 1 oxygen
B. 3 Hydrogen, 1 oxygen
C. 1 Hydrogen, 1 oxygen
Answer:
A
Explanation:
Answer:
A
Explanation:
2 Hydrogen and 1 Oxygene atoms :D
how does thermal energy flow as you hold a glass of ice water? (94 points)
a By conduction from your hand to the glass
b By convection from your hand to the glass
c By convection from the ice to your hand
d By radiation from the ice to your hand
Answer:
a.
Explanation:
The hand and glass are in direct contact with each other. The hand is warm while the glass is cold. Therefore, the energy will go from the hand to the glass through conduction.
5 Which of the following scenarios best describes Newton's law of action-reaction?
A A bottle of soda sitting in the console of a vehicle appears to move left as the vehicle makes a sharp right turn.
B A rocket moves upward as the engine pushes downward against exhaust gases and the exhaust gases push upward against the engine.
C A train traveling 88 kilometers per hour takes approximately one kilometer to come to a complete stop.
D An ice skater sharpens the blades of her skate to lessen the effect of friction.
Answer:
c?
Explanation:
b or c im dumb tho so they could be
What is your "Resting Heart Rate" for 1 minute?
Answer:
A normal resting heart rate for adults ranges from 60 to 100 beats per minute.
Mars is known as the ____ planet.
A) Blue
B) Gaseous
C) Red
D) Sandy
Answer:
Of course it's C
Red planet
Explanation:
It is because the soil on Mars is rich of Fe (Iron).
That makes the soil look red.
Even on our planet we have such this places like hormuz island in Iran.
i need help pleasee
6. Where on the graph does adding heat energy NOT raise the temperature?
What is the heat energy DOING if it's not raising the temperature?
7. What is temperature A called?
8. What is temperature B called?
Answer:
We can't see the graph so how are we supposed to help you???
Explanation:
HOW FAST CAN YOU ANSWER {NEW}}}}}}
if i’m thinking correctly it should be D
A moving object has 20 Joules of potential energy and has a mass of 10 kilograms. What is the formula used to velocity? How fast is the object moving in meters per second?
Happy Thursday! It's time to get creative! Explore the resource below to learn about a water molecule moving through the water cycle. Click here to read about a water molecule moving through the water cycle! Pretend that you are a water molecule traveling through the water cycle. What would you see or do? Would you change at all? Now, write about your journey! You may write a short story, a poem, a song or a comic strip. Please use as many of the following vocabulary terms as you can in your creative writing... runoff evaporation water cycle condensation water molecules precipitation wind clouds atmosphere sunlight climate weather water vapor gravity hydrosphere geosphere ocean transpiration groundwater aquifer energy radiant energy I will look for at least ten words highlighted or in bold print in your writing! Your assignment is due by the end of class so don't waste time. If you finish early, illustrate your writing for bonus points. Be ready to share at the end of class or tomorrow. File Upload Google Dr. CK-12 Practice Google Drive Hoonuit LTI More Upload a file, or choose a file you've already uploaded. Choose File No fie chosen search in
please answer all you can you don't need to answer 6
The pile-up of sand and silt at the site where a river flows into the ocean forms a
Answer:
As a river flows, it picks up sediment from the river bed, eroding banks, and debris on the water. The river mouth is where much of this gravel, sand, silt, and clay—called alluvium—is deposited. When large amounts of alluvium are deposited at the mouth of a river, a delta is formed.
Explanation:
Answer:
As a river flows, it picks up sediment from the river bed, eroding banks, and debris on the water.
Explanation:
Explain how this chemical equation H2+Cl2=2HCl shows The Law of Conservation of matter
H2+Cl2=2HCl shows The Law of Conservation of matter
The starting position of this object is m. The object is traveling at a velocity of m/s.
Answer:
The starting position of this object is 3 m
The object is traveling at a velocity of 3 m/s
Explanation:
The object's final position after 5 seconds, starting from an initial position of m with a velocity of m/s and constant acceleration of 2 [tex]m/s^2[/tex], is given by s = 5m + 50[tex]s^2[/tex] m.
To find the object's final position after 5 seconds, we can use the following equation of motion:
[tex]\[ s = ut + \frac{1}{2}at^2 \][/tex]
where:
- [tex]\( s \)[/tex] is the final position,
- [tex]\( u \)[/tex] is the initial velocity,
- [tex]\( t \)[/tex] is the time, and
- [tex]\( a \)[/tex] is the acceleration.
Given:
Initial position [tex](\( s_0 \))[/tex] = m
Initial velocity [tex](\( u \))[/tex] = m/s
Acceleration [tex](\( a \)) = 2 m/s\(^2\)[/tex]
Time [tex](\( t \))[/tex] = 5 s
Substituting these values into the equation, we have:
[tex]\[ s = (m/s) \times (5s) + \frac{1}{2} (2 \, \text{m/s}^2) \times (5s)^2 \][/tex]
Simplifying further:
[tex]\[ s = 5m + \frac{1}{2} \times 2 \, \text{m/s}^2 \times 25s^2 \][/tex]
[tex]\[ s = 5m + 2 \, \text{m/s}^2 \times 25s^2 \][/tex]
[tex]\[ s = 5m + 50s^2 \, \text{m} \][/tex]
Therefore, the object's final position after 5 seconds is [tex]\( s = 5m + 50s^2 \, \text{m}\)[/tex].
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The appropriate question is; the correct question is:
What will be the object's final position after 5 seconds if it starts at an initial position of m and is traveling at a velocity of m/s, subject to a constant acceleration of 2 [tex]m/s^2[/tex], without any significant external forces or constraints affecting its motion?
Party mix is an example of a mixture.
Question 1 options:
True
False
Answer:
false i think plz give me brainliest
Explanation:
Answer:
true
Explanation:
because it has different kids of snacks in it like a fruit bowl it has grapes pineapples apples bananas just different kinds of foods so yes it is true
[PICTURE ATTACHED] HEELPP
1. A compound is a substance made up of only 1 kind of element.
True
False
2. An element is a substance _______ be broken down or separated into simpler substances
can
cannot
Answer:
1. False
2.cannot
Explanation:
12. Curling is a sport in which players push large stones across smooth ice. Three curling stones that
have the same mass were sliding across the ice. They were each pushed by a player, but not all from
the same direction. Each curling stone changed speed as a result of being hit. Use the information in
the diagram to answer.
Which curling stone(s) experienced the strongest force when hit? How do you know?
Answer:
=1200N
Explanation:
i took the test on edu
Answer:
The yellow and orange curling stones experienced the same strength force because they both gained force, but the blue curling stone lost force.
Explanation:
The yellow and orange curling stones experienced the same strength force because they both gained force, but the blue curling stone lost force.
Does a dead tree count as biotic or abiotic?
Answer:
biotic. anything living is considered biotic and non-living is abiotic
Explanation:
Which of the following groups can contain mutlicellular organisms?
Archea
Protists
Animals
Bacteria
Answer:
among us
Explanation:
Which graph can figure out an object's speed? Distance-Time Graph or Speed-Time Graphs?
Answer:
Speed-Time Graphs
Explanation:
You are finding the objects speed not distance so it speed-time graph.
Answer:
speed-time graphs if it's not correct sorry
What is the structure labeled with an arrow?
A. Cytoplasm
B. Nucleus
C. Cell wall
D. Flagellum
In the given diagram, the structure labeled with an arrow is the nucleus. Therefore, option (B) is correct.
What is the nucleus of a cell?The nucleus is the most integral component of the cell. A nucleus can be defined as a double-membraned eukaryotic cell organelle that consists of genetic material.
The nucleus is typically the most evident organelle in the cell. The nucleus is entirely bound by membranes and is surrounded by the nuclear envelope.
The contents of the nucleus distinguish from the cytoplasm by the membrane. The nucleus contains hereditary information about the cell and controls its growth and reproduction.
The nucleus is not just a storage section for DNA but also occurs to be the home of cellular processes. In the nucleus, DNA can be duplicated and the process is named as named DNA Replication and produce an identical copy of the DNA.
In the diagram, the arrow indicates the nucleus.
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True or false?
Kinetic energy depends only on an object’s speed and velocity.
Help!
Answer:
false
Explanation:
Steel Wool + Oxygen (Fire) Observations Before Interaction
Answer:
Steel Wool + Oxygen (Fire):The steel wool is a grayish color and has a rough surface.Egg + Heat:The egg has a yellow yolk in the middleWater + Heat: The water is a clear liquid, while the heat is very hot but transparentThe water turnedinto a type of oxygen -Water Vapor-If 5 g of water becomes a gas it becomes 5 g of water vapor.
Explanation:
Which option is a measure of the average kinetic energy of the particles in a substance?
plz help
Answer:
temperature is use to measure
The temperature can measure the average kinetic energy of the particles in a substance. Therefore, option (B) is correct.
What is average kinetic energy?The average kinetic energy of a molecule of a gas is, K.E.= (3/2) kT where 'T' is the absolute temperature of the gas and 'k' is the Boltzmann constant and
All molecules of a gas are identical in mass and size and this differs from other gases. The actual volume of the molecules of a gas is negligible compared to the total volume occupied by gas.
The force of attraction between molecules of a gas is negligible and they are moving in different directions with different velocities. Since the molecules are moving at different velocities so they possess different kinetic energies.
The average kinetic energy of molecules is directly proportional to the absolute temperature of the gas. When the temperature of the gas is increased, the molecules start moving faster.
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Usable forms of nitrogen can intentionally be increased in the soil by(1 point)
lightning.
planting more trees.
allowing organic matter to decompose.
planting fewer beans.
Usable forms of nitrogen can intentionally be increased in the soil by allowing organic matter to decompose. Therefore, option C is correct.
What is organic matter ?Organic matter is defined as anything that contains carbon compounds formed by living organisms. It includes lawn clippings, leaves, stems, branches, moss, algae, lichens, animal parts, manure, droppings, sewage sludge, sawdust, insects, earthworms, and microbes.
The majority of organic matter in soil comes from plant tissue. Plant residues have a moisture content of 60-90 percent. Carbon (C), oxygen, hydrogen (H), and trace amounts of sulphur (S), nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium make up the remaining dry matter (Mg).
Microorganisms such as bacteria, viruses, fungi, protozoa, and algae are among the living components of soil organic matter. Plant roots, insects, earthworms, and larger animals such as moles, mice, and rabbits are also included.
Thus, option C is correct.
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identify the forms of energy being used in the energy transformation.
Answer:
c-m
Explanation:
Answer: Chemical to Mechanical energy
Explanation: The gasoline first has chemical energy, That is then turned into mechanical energy with the car.
Hydrogenation of double and triple bonds is an important industrial process. Calculate (in kJ) the standard enthalpy change ΔH for the hydrogenation of ethyne (acetylene) to ethane:
H−C≡C−H(g)+H2→H3C−CH3(g)
Bond enthalpies (in kJ/mol):
C−C (342)
C≡C (818.4)
C−H (403.4)
H−H (433.7)
Answer:
a
Explanation:
j
The standard enthalpy for the hydrogenation of ethyne to ethane is C−C (342).
What is Hydrogenation?Chemical reaction between a substance or element and molecular hydrogen that often occurs with the aid of a catalyst It's possible for the reaction to just involve the addition of hydrogen to a double or triple bond holding two atoms together or for the hydrogen to cause the dissociation (breaking up) of the molecule (called hydrogenolysis, or destructive hydrogenation).
Depending on the catalyst used, typical hydrogenation reactions include the reactions of hydrogen and nitrogen to produce ammonia and hydrogen and carbon monoxide to produce methanol or hydrocarbons.
In the presence of a catalyst, nearly all organic molecules having numerous bonds connecting two atoms can react with hydrogen.
Therefore, The standard enthalpy for the hydrogenation of ethyne to ethane is C−C (342).
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