The chemical reactions are generally of many types. The exothermic and endothermic reactions are important among them. In an exothermic reaction the chemical energy is converted to thermal energy. The correct option is 1.
What is exothermic reaction?The chemical reactions which proceed with the evolution of heat energy are defined as the exothermic reactions. The chemical reactions which proceed with the absorption of heat energy are called endothermic reactions.
In an exothermic reaction, system loses heat to surroundings. Since heat is given out in exothermic reactions, the enthalpy of the products will be less than that of the reactants.
In exothermic reaction, q will be negative and the enthalpy change will be also negative. In this reaction chemical bonds are broken and new bonds are formed. The chemical energy is converted to kinetic energy which is released as heat.
Thus exothermic reaction releases thermal energy.
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The wastewater in your home goes to one of three places. It can run into a home septic system, it can go to a centralized sewage treatment plant, or it might be directly discharged into a body of water. Where does your water go after it goes down the drain?
Answer:
Sewage Treatment
Explanation:
I am sorry if I got this wrong but if I did please correct me!
Which graph above shows an object’s acceleration? Why did you choose that graph(explain why)
Velocity vs. Time shows an objects acceleration because... in Position vs. Time the line does not go through the origin and it’s very uneven, But Velocitu vs. time goes through the origin and has straight lines.
Answer:
B.
Explanation:
Because the lines are vertical no so wormy like.
What type of eclipse is pictured below?
what am i supposed to write here?
Answer:
I think u are supposted to find out the are the missing things
Explanation:
a
a decrease in the number of zebra mussels along the waterways
b
an increase in the number of zebra mussels along the waterways
c
no effect because more time is needed to determine an outcome
d
no change in the number of zebra mussels infecting the waterways
Could you add a screenshot so we know what's being asked please?
I KEEP ASKING FOR HELP IVE DONE MOST OF THE QUESTIONS MYSELF BUT NEED HELP IN SOME IF YOU ANSWER I WILL GIVE BRAINLIEST
What happens to the motion of an object if forces acting on the object are equal and balanced?
A. The object begins to move
B. The object begins to slow down
C. The motion of the object does not change
Answer:
When the forces acting on an object have equal strength and act in opposite directions, they are balanced. These forces cancel out one another, and the motion of the object they are acting on remains unchanged. The object may change its speed (speed up or slow down), or it may change its direction.
So I think its C
You see this is because if the forces were different the object would either speed up or slow down but in this case the forces are equal so the motion of the object does not change.
Hope This Helps :)
CH4 + __O2 → CO2 + ___H2O
balance this equation
Explanation:
need points bye have good day
Answer:
CH4+2O2→CO2+2H2O
Explanation:
Start with the least common atoms and leave things like H and O to the end.
You need to have the same number of methane reactants as carbon dioxide products because there is one carbon in each. I’ll set them both to 1 for now. O see two things with oxygen on the product side so we will have to juggle numbers a bit to figure out those. There is only H in the water so we’ll go there next. One CH4 gives 2 water molecules so we have that done now. At last we can tackle the O atoms. In two waters there are 2 and in the CO2 there are two more so a total of 4 O atoms in the products so we need two O2 molecules in the reactant side.
Hope this is useful.
A cube has a mass of 25g and a volume of 5cm3, what is its density?
Choose all the answers that apply.
Carbon-13 has an atomic number of 6. Carbon-13 _____.
has two electron shells
has 7 electrons
is an isotope
is in period 2
has 7 neutrons
Answer:
has 7 neutrons
hope this helped.
pls help really easy just search the questions f u need to
Answer:i cant seee
Explanation:
none
HELP plz
Are beaches made from erosion or deposition?
Answer:
Desposition
Explanation:
Answer:
Deposition
Explanation:
Beaches are wave-deposited accumulations of sediment.
What patterns in the rock layer fossils helped you identify an extinction?
Answer:
Hope this helps!! :D
Explanation:
Often, the rock layers bookending the mass extinction are noticeably different in their compositions. These changes in the rocks show the effects of environmental disturbances that triggered the mass extinction and sometimes hint at the catastrophic cause of the extinction.
If two people attempt the same maneuver, what determines the amount of force that each is required to exert?
Answer:
Explanation:
you need to change either the turn of the jump or push off higher or lower from the wall
If the two individuals start at the same position and time, the amount of force exerted by each person is determined by mass of the person.
The amount of force exerted by each person is given by Newton's second law of motion, which states that the force exerted by an object is directly the proportional to the product of mass and acceleration of the object.
F = ma
where;
F is the applied forcem is the mass of the objecta is the acceleration of the objectThus, If the two individuals start at the same position and time, the amount of force exerted by each person is determined by mass of the person.
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What would u write in a THESIS for Piney Woods?
GIVING BRAINLIST WHO EVER ANSWERS WITH PARAGRAPHS!
Answer:
Your thesis statement belongs at the end of your first paragraph, also known as your introduction. Use it to generate interest in your topic and encourage your audience to continue reading.
Explanation:
jayfeather friend me
Answer:
There is not a wrong answer for creating a thesis. The thesis reflects the many opinions you have towards the particular script. Use what you have learned from reading this and create a morale. If you have an opinion about it, try clearly stating it. Anything works. Just think of it as a bridge. Can it support the many ideas you have? REMEMBER stay on track and dont over think it!
Explanation:
The wastewater in your home goes to one of three places. It can run into a home septic system, it can go to a centralized sewage treatment plant, or it might be directly discharged into a body of water. Where does your water go after it goes down the drain?
Answer ian rlly kno ...........
How does melanin provide protection against skin cancer? use absorb
energy
light in your sentece
The melanin provides protection against skin cancer by absorbing harmful UV light from the electromagnetic spectrum.
What is electromagnetic spectrum?
The electromagnetic spectrum consists of radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
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2. Calculate: For each object, substitute the values you know into the gravitational potential energy equation to solve for weight. Record each object's weight in the fourth (science)
Answer:
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Explanation:
Earth’s surface is constantly changed by erosion and deposition. Erosion breaks down Earth’s surface by carrying materials away from an area. Deposition builds up Earth’s surface when these materials are deposited in an area over time.
Which landform results when erosion occurs during volcanic eruptions, but deposition does not directly contribute to creating the landform?
volcanic soil
cinder cone
caldera
lava plateau
Answer:
Caldera
Explanation:
C
The landform results when erosion occurs during volcanic eruptions, but deposition does not directly contribute to creating the landform is caldera.
Where does the operation take place?Involving the wear, transport and deposition of soils and rock particles. Erosion is the process of wear, transport and sedimentation of soil, subsoils and rocks as an effect of the action of erosive agents, such as water, wind and living beings.
In this case the caldera is landform results when erosion occurs during volcanic eruptions, but deposition does not directly contribute to creating the landform.
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Help its for science ill give brainilest.
Answer:
This equation reveals that the kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four.
Explanation:
Fill in the chart to describe and give examples of physical changes.
Answer:
here are some examples of physical change!!!
Explanation:
-An ice cube melting into water in your drink.
-Freezing water to make ice cubes.
-Boiling water evaporating.
-Hot shower water turning to steam.
-Steam from the shower condensing on a mirror.
Answer:
Examples:
Melting an ice cube.
Boiling water.
Mixing sand and water.
Breaking a glass.
Dissolving sugar and water
How would the amount of force needed to keep the kite in the air change if it were made out of a heavier material instead of a lighter material?
(A)The amount of force needed would be greater.
(B)The amount of force needed would be the same.
(C)The amount of force needed would go up and down with the kite.
(D)The amount of force needed would be smaller.
What are the two things needed to make earth habitable, according to the video
How does Dr.Edgar cause what she knows about the earth to learn about mars?
Link to the video: maybe can get to the comments
Why might different types of fossils be found in rock layers that come before and after a rock layer that contains no fossils?
Answer:
because they can move around under the earth
Explanation:
How do organisms form carbon films?
Organisms turn into rock.
Residue is left on rocks when organisms decay.
Hollow forms are left in sediment by decaying organisms.
Organisms leave evidence of their activities, such as footprints.
Answer:
hollows forms are left in sediment by decaying organisms
Answer:
The answer is C. I just did the quiz and got 90%, but this is not the one I got wrong. Hope this helps!
Explanation:
PLs HELP ME LIKE ASAP
How do the light rays emitted by a candle travel?
Answer:
Explanation:
The light rays coming from the unlit candle and the reflected light rays of the lit candle are superposed on top of one another. ... For very transparent substances like glass, only about 5 percent of the light that hits it is reflected. The remaining 95 percent is transmitted—it passes right on through.
Answer:
The light rays coming from the unlit candle and the reflected light rays of the lit candle are superposed on top of one another. ... For very transparent substances like glass, only about 5 percent of the light that hits it is reflected. The remaining 95 percent is transmitted—it passes right on through.
Explanation:
Ok guys thanks for answering my other question, But I have another one.
Which compositional layer is divided between three mechanical layers?
Answer:
Layer Depth
Lithosphere 0-100 km
Asthenosphere 100-350 km Soft plastic *note: The mantle is not liquid!
Mesosphere 350-2900km stiff plastic
Outer Core 5100-6370 km solid
Explanation:
Answer:
l i t o s p h e r e 0 - 100 km
a s t h e n o s p h e r e. 100 - 350 km
m e s o s p h e r e. 350 - 2900 km
o u t e r. c o r e. 5100 - 6370 km
I don't know if this helped at all but I hope it did!
what is found in the molecule dna?
Answer:
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Explanation:
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What patterns in the rock layer fossils helped you identify an extinction?
