Answer:
Hess's law:
First reaction:
Ca (s) + CO₂ (g) + ½O₂ (g) → CaCO₃ (s) ΔH₁ = -812.8 kJ
Second reaction:
2Ca (s) + O₂ (g) → 2CaO (s) ΔH₂ = -1269 kJ
Overall reaction:
CaO (s) + CO₂ (g) → CaCO₃ (s) ΔH = ?
According to the Hess law of constant heat summation, the enthalpy of the overall reaction is the sum of the enthalpy of both reactions but this will not give the enthalpy of the overall reaction in this case. The enthalpy of the overall reaction is rather obtained by halving the enthalpy of the second intermediate reaction and reversing its sign before taking the sum as shown below;
Enthalpy of Intermediate reaction 1 + ½(- Enthalpy of Intermediate reaction 2) = Enthalpy of Overall reaction
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help i don't understand.
Why do river rise from slope and flow toward the lower
Explian briefly
Answer:
because gravity pulls it down to the lowest point witch make all the high water will go down
Hope This Helped
What is one strategy or behavior that individuals can use or do to support a healthy environment
Answer:
Behavior or strategy that individuals can use or do to support a healthy envitonment is to mainatain sanitanion. to conduct awareness programm or can keep yoirself clean first by maintaing cleanliness. suggest people not to make a environment dirty, and lastly to support a healthy envitonment, we need to maintain a healthy eco system and recycle the waste products.
Explain how the layers of Earth are connected and affected by each other.
Answer:
Movement in the mantle caused by variations in heat from the core, cause the plates to shift, which can cause earthquakes and volcanic eruptions.
What is wind speed?
Pls hurry this is due in a few minutes
Answer:
it is how fast the wind blows
list the major fishing grounds of the world.
Answer:
dogger bank and grand
Explanation:
Select all the correct answers.
The polar jet stream is an air current that moves from west to east near earths poles. Which
statements demonstrate a way in which this air current could be changing by moving continents?
Answer: Continents with high mountains might obstruct the flow of the polar jet stream.
Moving continents could disrupt ocean currents, which help drive air movement.
Explanation: plato :3
Mountains on continents may prevent the polar jet stream from moving.Ocean currents, which contribute to air flow, could be disrupted by shifting continents.
What is Polar jet stream ?While the earth's rotating velocity slows down underneath it, air travelling toward the poles keeps its eastward motion. As a result, the wind flows from west to east because it rotates more quickly than the earth (relative to us at the surface).
The westerlies, also known as anti-trades or prevailing westerlies, are the dominant winds in the middle latitudes between 30 and 60 degrees latitude that blow from the west toward the east. Extratropical cyclones are generally guided in this general direction by these systems, which begin from the high-pressure regions in the horse latitudes and trend towards the poles.
Jet streams are strong wind currents that typically flow fromfrom west to east, everything. Two polar jet streams, located near the north and south poles, and two subtropical jet streams, located closer to the equator, make up Earth's four main jet streams.
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Extrusive igneous rock has a fine-
grained texture. Which of the following
is accurate about this type of igneous
rock?
A. It is made from sediments.
B. It never solidifies.
C. It is made from magma that cools slowly.
D. It is made from lava that cools quickly.
Answer: D
Explanation:
"Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet. When lava comes out of a volcano and solidifies into extrusive igneous rock, also called volcanic, the rock cools very quickly."
I hope this helps!!
It is made from lava that cools quickly accurate about this type of igneous rock. Thus, option D is correct.
What is an igneous rock?One of the three primary rock types, along with both metamorphic and sedimentary rocks, is a solid substance, also known as magmatic rock. When lava or magma cools and solidifies, metamorphic rocks is created. The partial melting of pre-existing materials in the basement or surface of the planetary can produce magma.
Magma cools and hardens inside the earth's crust, forming intrusive rocks. Igneous rock sometimes referred to as volcanic rock, is created when lava erupts from a volcano and hardens.
These are the kinds of rocks that are created by supervolcanoes and gushing fractures. When introduced to the cool dry heat of the ocean, the basalt, which is known as lava when hot magma explodes on the top, heats up and freezes practically immediately. Therefore, option D is the correct option.
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"Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet. When lava comes out of a volcano and solidifies into extrusive igneous rock, also called volcanic, the rock cools very quickly."
In 1-2 sentences, explain why people tend to look for certain cultural characteristics when they move.
Answer:
One's identity is rooted in groups (family, culture, work). So it's expected if somebody may look at someone's cultural characteristics when moving because it might give you an idea of who they are as an individual. It might give you a better understanding of who they are and you might comprehend their traits.
People generally tend to seek for particular characteristics while migrating.
Why do People tend to look for certain Cultural Characteristics during Migration?People might practice Selective Migration, where they move to places they find to be compatible in terms of their needs, modes of sustenance and personality. It is important because people come from diverse backgrounds and pre-existing identities, culturally. It makes the process of the migration easier, if the new place is culturally familiar or adaptable.Thus, the above are the reasons why people look for particular characteristics while migrating.
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Why as Americans should we care about France use 5-7 sentences to explain why Americans should hate about France
Answer:
The French demanded that the United States provide France with a low-interest loan, assume and pay American merchant claims against the French, and lastly pay a substantial bribe to Talleyrand.
where is Cracow based?
Answer:
southern poland!
State importance of Deltaic plains .
Really appreciate your help
Answer:River deltas are important in human civilization, as they are major agricultural production centers and population centers. They can provide coastline defense and can impact drinking water supply. They are also ecologically important, with different species' assemblages depending on their landscape position.
Help me pleaseeee. Which is the largest ocean on the world? how much it occupied?
Answer:
Pacific Ocean
Explanation:
the largest ocean on the world is Pacific Ocean.
It occupied about 63 million square miles. very large ocean..
On a coordinate plane, 3 triangles are shown. Triangle A B C has points (5, negative 5), (1, negative 2), (1, negative 5). Triangle A prime B prime C prime has points (5, 5), (1, 2), (1, 5). Triangle A double-prime B double-prime C double prime has points (negative 1, 3), (negative 5, 0), (negative 5, 3).
Which rule describes the composition of transformations that maps ΔABC to ΔA"B"C"?
Translation of negative 6 units x, negative 2 units y composition reflection across the x-axis
Reflection across the x-axis composition translation of negative 6 units x, negative 2 units y
Translation of negative 6 units x, negative 2 units y composition 90 degree rotation about point 0
90 degree rotation about point 0 translation of negative 6 units x, negative 2 units y
Answer:Clayton could use the relationship (x, y) right-arrow (y, x) to find the points of the image.
C’ will remain in the same location as C because it is on the line of reflection.
Explanation:none
Answer:
c
Explanation:
Which of the following is most likely the next step in the series? Shape
For the series of shapes, the most likely the next step in the series is the 7 sides (heptagon). Option D. This is further explained below.
What are shapes?Generally, shapes are simply defined as a person's or something's exterior shape, outline, or features.
In conclusion, As the number of sides increases by 1, it becomes more difficult to complete. Heptagon, there are only seven sides to the figure mentioned in.
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What serves as an important economic activity in the Pacific Rim? (54 points+brainliest)
{archaeology}
{commercial fishing}
{coal mining}
{busking}
No links please.
Answer:
The thing that serves as an important economic activity in the Pacific Rim is B. {commercial fishing}
Parallelogram MNPQ was dilated to create parallelogram M'N'P'Q'.
On a coordinate plane, 2 parallelograms are shown. Parallelogram M N P Q has points (2, negative 2), (4, negative 2), (3, negative 3), and (1, negative 3). Parallelogram M prime N prime P prime Q prime has points (5, negative 5), (10, negative 5), (8, negative 7), and (3, negative 7).
Which statements are true about the parallelograms? Select three options.
The length of side MN is 2 units.
The length of side M'N' is 5 units.
The image is smaller than the pre-image.
Sides MQ and M'Q' both have the same slope, 1.
The scale factor is Two-fifths.
The true statements about the parallelograms are:
The length of side MN is 2 units.The length of side M'N' is 5 units.Sides MQ and M'Q' both have the same slope, 1.What is the parallelograms about?Note that Parallelogram MNPQ was dilated to form parallelogram M'N'P'Q'.
The Points - M(2,-2), N(4,-2), P(3,-3), Q(1,-3)
The Points - M'(5,-5), N'(10,-5), P'(8,-7), Q'(3,-7)
Therefore, MN
[tex]\sqrt{4-2}^{2} + (-2(-2){2}[/tex] (note the square root covers all the equation)
=2
Therefore:
The length of side MN is 2 units.The length of side M'N' is 5 units.Sides MQ and M'Q' both have the same slope, 1. are correct.Learn more about parallelograms from
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Answer:A,B,D
Explanation:
what is tectonic plate
Tectonic plates are peace of Earth's crust and uppermost mental together, referred to as lithosphere.
Could you please help got this wrong twice.
Answer:
it is a reflection over x axis
please help me with this i having an hard time giving 50 points One thing that has destroyed more lives, marriages, and families than anything is financial instability. So many arguments and struggles revolve around money. If we want to act like money doesn't matter, then we are in denial of how our world functions.
Creating financial stability creates freedom, peace, and even the potential for us to have resources for our personal dreams. Financial freedom creates a platform and launching pad for our personal growth opportunities.
People often say, "My only limitation is money.” But for many, their greatest limitation is stability in the finances they already do have because no matter how much or little you make, we all need budgets and boundaries. Budgets and boundaries help us make good financial decisions.
If the goal of the article above is to say that financial stability can only occur if people are responsible with the money they currently have, then write a statement in support or against the statement. If the goal of the statement is something else, then write what you think the statement means. Share an example of someone in your life who wanted financial stability but wasn't wise with what they currently had. What lessons did you learn from watching their behavior?
Answer:
The question is to long I can't answer it
What does it mean by high literacy
Answer: Sorry this might be a bit confusing.
Explanation: A high literacy rate (or low illiteracy rate) suggests the existence of an effective primary education system and/or literacy programmes that have enabled a large proportion of the population to acquire the ability of using the written word (and making simple arithmetic calculations) in daily life and to continue learning. It is common practice to present and analyse literacy rates together with the absolute number of adult illiterates as improvements in literacy rates may sometimes be accompanied by increases in the illiterate population due to a changing demographic structure.
What is Traditional Authority
Answer:
Traditional Authority is when laws and ideas and the way of life in the places are largely ruled by whatever the custom of that time is.
So if the custom was to have red houses with blue roofs then the law would be you are only allowed to have red houses with blue roofs.
Does that make sense I hope it does?
mountain region. and geographical area
Answer:
Explanation:
The Mountain States are eight US states in the Western United States. These states are Montana, Idaho, Wyoming, Nevada, Colorado, Utah, New Mexico, and Arizona. The Mountain States form a large swathe of territory that stretches from the US border with Canada to the US border with Mexico. Six of the eight states have parts of the Rocky Mountains within their borders. There are, however, other mountains ranges in the Mountain States, such as the San Francisco Mountains in Arizona, and the Great Basin Ranges, which are mostly in Nevada. The Mountain States are also characterized by other geographic features, including desert terrain, canyons, and plains.
Geography Of The Mountain States
Aspen, Colorado
Skyline of Aspen, Colorado with the Rocky Mountains forming a stunning backdrop.
The Mountain States are subdivided into the Northwest and Southwest. The former consists of Idaho, Wyoming, and Montana, while the latter consists of the other five states. All of these states are home to the highest mean elevations in the country. Although it is certainly not the only mountain range in the Mountain States, the Rocky Mountains, or Rockies, as they are sometimes called, are the most prominent. The Rocky Mountain Range stretches from northern British Columbia, Canada’s most westerly province, all the way to northern New Mexico, for a total distance of 4,830 km. Parts of the Rockies pass through the US states of Colorado, Wyoming, and Montana. The Rocky Mountains make up what is known as North America’s Continental Divide.
Mountain States By Highest Elevation
Colorado - Mount Elbert (4401 m)
Wyoming - Gannett Peak (4209 m)
Utah - Kings Peak (4120 m)
New Mexico - Wheeler Peak (4013 m)
Nevada - Boundary Peak (4007 m)
Montana - Granite Peak (3904 m)
Idaho - Borah Peak (3861 m)
Arizona - Humphreys Peak (3852 m)
Mountain States By Mean Elevation
Colorado - 2073 m
Wyoming - 2040 m
Utah - 1859 m
New Mexico - 1737 m
Nevada - 1676 m
Idaho - 1524 m
Arizona - 1250 m
Montana - 1036 m
Mount Elbert
Mount Elbert is the highest peak of the mountain states. It is located in Colorado.
The 10 Biggest Cities In The Mountain States
Phoenix, Arizona - 1,537,058
Denver, Colorado - 663,862
Las Vegas, Nevada - 613,599
Albuquerque, New Mexico - 557,169
Tucson, Arizona - 527,972
Mesa, Arizona - 464,704
Colorado Springs, Colorado - 445,830
Aurora, Colorado - 353,108
Henderson, Nevada - 277,440
Chandler, Arizona - 254,276
what is geography and tell me more about wetlands
Explanation:
Geography is the study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources and political and economic activities.
Wetlands are areas where water covers the soil, or is present either at or near the surface of the soil all year or for varying periods of time during the year, including during the growing season.
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Which of the following is most likely the next step in the series?
Where would you go to find mammoth cave national park.
One should visit the Kentucky, in order to discover the Mammoth Cave.
Where is the Mammoth Cave National Park placed?The Mammoth Cave is the well-known National park of the America. It is placed withinside the Kentucky.
The Pink city is the nearest city that came in the entrance of the Mammoth Cave.
It is best known as the world's famous and the largest cave system.
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Which feature of the ocean floor includes its deepest parts?
Answer:
Sus animales misteriosos y gigantes que se ocultan bajo el mar
Explanation:
how did Yemen civil war make people in Yemen starve
HELP!
Which of the following arguments is supported by the demographics of families in the work force, as described in the
lesson?
O Families are now smaller due to shorter life spans.
O Women account for about half of all purchases.
O Housing is the only sector to see steady growth.
O Men are the only consumers to purchase goods.
The demographics of families in the workforce is supported by the fact that Housing is the only sector to see steady growth.
How do families in the workforce affect the economy?
As a result of both men and women working, there has been a rise in the amount of income coming into families.
This has led to housing seeing growth because more families can afford to get mortgages.
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Consider the diagram.
Line m is a perpendicular bisector of line segment S T. Line m also contains points S and T.
Which line segment has the same measure as TQ?
SR
TR
ST
QS
The measure of the length TQ is equal to the measure of length SQ. Then the correct option is D.
What is coordinate geometry?Coordinate geometry is the study of geometry using the points in space. Using this, it is possible to find the distance between the points, the dividing line is m:n ratio, finding the mid-point of the line, etc.
Line m is a perpendicular bisector of line segment ST.
Line m also contains points S and T.
The perpendicular bisector bisects the line segment.
Let the intersection point of the line be Q.
Then the measure of the length TQ is equal to the measure of length SQ.
TQ = SQ
Then the correct option is D.
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Answer:
B) TR
Explanation:
I got 100% on quiz