Answer:
0.0451 moles ≅ 0.04 moles
Explanation:
We are able to calculate how many moles of calcium chloride (CaCl₂) are in 5.00 g sample, by dividing the mass into the molar mass (MM) of the compound:moles = mass/MMFirst, we calculate MM of CaCl₂ from the chemical formula, using the molar mass of the elements Ca and Cl:MM CaCl₂ = (1 x MMCa) + (2 x MMCl) = 40 g/mol + ( 2 x 35.453 g/mol) = 110.9 g/mol.
Finally, we calculate the moles from the mass and MM:moles of CaCl₂ = mass/(MM CaCl₂) = 5.00 g/(110.9 g/mol) = 0.0451 moles ≅ 0.04 moles
So your answer comes out as 0.0451 moles ≅ 0.04 moles.
Hope this helped :)
Between which two consecutive integers does √150 lie.
Answer:
12 and 13
Explanation:
We know that 150 > 100, so the integer has to be > 10.
11² = 121
12² = 144
13² = 169
As you can see, the two integers that have 150 between their squares is 12 and 13.
(If we were to put the square root of 150 in a calculator, we would get 12.247... which is between 12 and 13).
Which most likely explains why families in rural areas may have two children under the one-child policy? their families are penalized for not producing more children. Their families require extra help on the family farm. Their families are rewarded for each extra child they have. Their families support deng’s concept of a nation of peasants.
A rural area is an expanse of open ground with few houses or other structures and few inhabitants.
What is Rural area?The population density in rural areas is quite low. Many people live in a city, or urban area.
Their residences and places of business are situated close together. There are fewer people in a rural location, and they live and work at great distances from one another.
Most rural communities' main industry is agriculture. On farms or ranches, the majority of people reside or work. Small towns, villages, hamlets, and other localities are found inside or close to rural areas.
Therefore, A rural area is an expanse of open ground with few houses or other structures and few inhabitants.
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Based on the different types of land use shown in the image, which of the following best explains why soil salinization is a concern in the arid landscape shown?
The option that best explains why soil salinization is a concern in the arid landscape is; Irrigation increases the salt content of the soil, which disrupts the growth of crops and degrades soil fertility.
What is soil salinization?Soil salinization is defined as the accumulation of water-soluble salts within soil layers above a certain level.
Now, an Increase in soil salinity will lead to total crop failure in a field due to the fact that plants need to take up water from the soil for growth and development. However the salinity levels of this soil will draw water from the plants by osmosis since the soil water will be hypertonic to the plant's cells cytoplasm as well as seeds.
In osmosis, water moves from the hypotonic solution to the hypertonic solution via a semi-permeable membrane until osmotic equilibrium is achieved. Thus, planted seeds will find it hard to germinate and plants will wilt and die as a consequence.
The missing options are;
A) Forests are being cleared as land is re purposed for agricultural uses, which reduces biodiversity in the region.
B) Land is being farmed so intensively that soil nutrients are degraded to the point that crops will not grow.
C) Irrigation increases the salt content of the soil, which disrupts the growth of crops and degrades soil fertility.
D) Fields are left fallow after being farmed intensively so that nutrients in the soil may be replenished.
E) Multiple crops are being planted into the same field, which increases the chances of pest damage.
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Which statement describes one of the most important reasons why the united states annexed the kingdom of hawaii?
The statement that describes one of the most important reasons why the United States annexed the kingdom of Hawaii was that:
The United States wanted to use Hawaii as a base from which they could have a key Military presence/power in the Pacific.
What was the reason the US annexed Hawaii?The annexation was said to be gotten due to the threat that has been seen of the Japanese invasion.
It was found out that a lot of Japanese did came to the islands in a large numbers to work in the sugar trade. U.S. military leaders was said to have feared that there is potential Japanese occupation of the islands and he formed a strategic naval base in the heart of the Pacific.
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100 points find the length of PQ
Answer:
32 cm is the length of PQ ans
Which of these does not correctly contrast sperm with eggs
A statement that doesn't correctly depict a contrast between sperm and eggs is: mass produced : one each month.
What are Eggs and Sperm of Humans?Eggs are the female reproductive cells (much larger), while sperms are male reproductive cells (much smaller).
At birth, females have approximately a million eggs, which decline in number as they age, while males, at puberty, produce sperm almost everyday.
Therefore, a statement that doesn't correctly depict a contrast between sperm and eggs is: mass produced : one each month.
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Complete the following sentence.
If you shine a flashlight at an object in space that is 150,000,000 km from Earth, the light will arrive at the object in approximately light seconds.
Also… STOP DELETING MY QUESTIONS YOU BOTS
Answer:
false because it would take a few years to reach it I think
Explanation:
im new
Answer:
no bots false
Explanation:
How does temperature and precipitation change as you increase in elevation?.
Answer:
Explanation:
As you increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further (i.e. air expands), and the temperature decreases.
Critically discuss the role of self awareness in your attempt to choose subjects in keeping with your personal attributes at grade 10.
The role of self awareness in an attempt to choose subjects at Grade 10 lies in the fact that;
Helped distinguish one's own beliefs from others. Benefits of self awarenessIt helps us to become better decision-makers and hence, gives us more self-confidence. On this note, one was able to communicate with clarity and intention. Additionally, one is able to understand things from multiple perspectives.
On this note, self awareness helped me identify that I'm very curious and hence, helped me choose science subjects at Grade 10.
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The future value of $200 received today anddeposited at 8 percent compounded semi-annually for three years is.
Answer:
$253
Explanation:
[tex]200(1+\frac{0.08}{2})^{2(3)} \\200(1.04)^{6} \\200(1.26...)\\=253.06\\\\\\[/tex]
Use the formula (A=P(1+r/n)^nt
Small object usually built to scale that represents
Answer:
A small object built to scale that represents something larger is called a "scale model."
Explanation:
A scale model is a smaller version of an object or concept that accurately represents the proportions and features of the original on a reduced scale. It is a three-dimensional or virtual representation used for visualization, planning, and understanding complex structures or systems. Scale models allow us to study and interact with the object or idea in a more manageable form, making it easier to test and communicate ideas before actual production or construction. They are valuable tools in various fields, including architecture, engineering, design, and education.
A person gets a running start toward a wall from 5 meters away
kk kk ok k k k k k k k k k k k k k k
How does the term ""the white man’s grave"" explain why much of africa went unexplored by europeans for so long?.
Answer:
This term refers to the dangers Europeans faced in Africa's interior due to disease, wild animals, and hostile tribes.
Explanation:
got it right on the quiz
Answer:
This term refers to the dangers Europeans faced in Africa's interior due to disease, wild animals, and hostile tribes.
Explanation:
How many low dose 81 mg aspirin tablets can be made from 1. 21 kg of aspirin?
Some sporting activities are often associated with a particular gender.
Answer:
football (m) & cheer (f)
Explanation:
i hope this helped
A poem that expresses feelings or ideas about a topic is a
Answer:
Lyric Poem
Explanation:
This due to the thoughts and emotions of one being
The image produced by an object is –10. 0 cm from a concave mirror that has a focal length of 5. 0 cm. The distance of the object from the mirror, rounded to the nearest whole centimeter, is cm.
The distance of the object from the mirror is 3cm.
To calculate the distance of the object from the mirror, we make use of the mirror formula
Mirror formula1/f = (1/u)+(1/v)............ Equation 1Where:
f = Focal length of the mirrorv = image distance u = object distance.Using the real is positive convention,
Given:
f = 5 cmv = -10 cmSubstitute these values into equation 1 and solve for u
1/5 = (-1/10)+(1/u)1/5+(1/10) = 1/u1/u = (2+1)/101/u = 3/10u = 10/3u = 3.33 u = 3 cmHence, The distance of the object from the mirror is 3cm.
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What does andrew weiss mean when he says it would be ""political gold"" for putin if the u. S. Treated recent events as if there were a new cold war with russia?
The term ""political gold"" is simply known as political gain and in this text, Andrew Weiss mean that Putin will have a lot of political gain, advantage or opportunity if the u. S. Treated recent events as if there were a new cold war with Russia.
What is political gold?Political gold is a word or phrase that connote political gain, advantage or a golden opportunity.
Andrew Weiss implies that Putin will have a lot of political advantage or opportunity because Russia is one that has the support of some major countries such as China and North Korea and this would not be good for U.S.
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In paragraph 1 of the excerpt from the piano shop on the left bank, why does the narrator describe the piano as "a strange and wonderful combination of the robust and the delicate"?
Answer: I believe that the answer is." To explain why he feels this particular piano is special"
Explanation: A.) To explain why he feels this particular piano is special
A 50 g ball of clay traveling at speed v0 hits and sticks to a 1. 0 kg brick sitting at rest on a frictionless surface.
Answer:
speed is 0.048
Explanation:
hope it helps . took the k12 test
Which of the following characteristics is essential to be considered an effective index fossil?
A characteristic which is essential for a fossil to be considered an effective index fossil is that it must be distinctive, unique and easily recognizable.
What is a fossil?A fossil can be defined as the mineral impression or remains of both living and non-living organisms that are generally considered to be pre-historic in nature.
Similarly, an index fossil refers to a type of fossil that is typically useful for dating, identify geologic periods and comparing the strata in which it is found.
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The declaration’s mention of a ""heavy toll"" in the third paragraph was most likely a reference to which of the following?
The heavy toll in the third paragraph was a reference to the casualties of the first war.
What does heavy toll means?The phrase "heavy toll" refers to an idea of unwanted consequences or the outcome brought by a specific incident.
The phrase was used in the paragraph to refer to the fatalities produced in the very first war.
Although, the author also conveys that the rights of every individual must be considered in order to prevent any revolt or war.
Therefore, the Option A is the correct..
Missing options "A. The casualties of the first war B. The deaths that occurred as a result of the use of nuclear weapons during the second war C. The deaths that occurred during the holocaust D.the mass violence that occurred under communist leaders, such as Mao Zedong"
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If the action potential starts with a potential difference of +40. 0 mv, and the length constant of the axon is 2. 00 mm, how far from the site of the stimulus will the potential difference across the membrane drop to 1. 00 mv (assuming the action potential is not regenerated)?
In paragraph 6 of the selection from the boston girl, what does the description of miss chevalier emphasize?.
Are the tuskegee syphilis study and diethylstilbestrol study on pregnant women unethical why.
Answer:
yes
Explanation:
The study is an experiment that was conducted between the 1932 and 1972 by the UNPS that is united nations public health services. It was taken up by the center of disease control and prevention. The main aim was to study and observe the diseases when untreated. The initial experiments were made of 6 months.
What is the magnitude and direction of the force exerted on a 3. 50.
Answer:
F = 3.5×10^-6 × 250 = 8.75×10^-4 N due East.
Explanation:
thats the awanser
A 170-cm creature casts a shadow of 200 cm. What is the angle of elevation of the light source? express your answer to the nearest degree
The angle of elevation of the light source is mathematically given as
[tex]\theta= 40.36[/tex]
What is the angle of elevation of the light source?Question Parameters:
A 170-cm creature casts a shadow of 200 cm.
Generally, the equation for the Trigonometry problem is mathematically given as
Where
170-cm creature is the height
Shadow of 200 cm is the adjacent side
[tex]tan\theta=\frac{opp}{adj}[/tex]
Therefore
[tex]tan\theta=\frac{170}{200}\\\\tan\theta=0.86[/tex]
[tex]\theta= 40.36[/tex]
In conclusion, the angle of elevation is
[tex]\theta= 40.36[/tex]
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What is the value of a^{2}+3b\div c-2d,a 2 +3b÷c−2d, when a=3,\ b=8,\ c=2,a=3, b=8, c=2, and d=5d=5?
The expression a^2+3b/ c-2d is an algebraic expression
The value of the expression a^2+3b/ c-2d when a=3, b=8, c=2, and d=5 is 11
How to determine the value of the expression?The expression is given as:
a^2+3b/ c-2d
And the given parameters are:
a=3, b=8, c=2, and d=5
Substitute known values in the expression
a^2+3b/ c-2d = 3^2+3*8/ 2-2*5
Evaluate the exponents and the products
a^2+3b/ c-2d = 9+24/2-10
Evaluate the quotient
a^2+3b/ c-2d = 9+12-10
Evaluate the sum and the difference
a^2+3b/ c-2d = 11
Hence, the value of the expression a^2+3b/c-2d is 11
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Which interpretation focuses upon a critical theme of the poem there will come soft rains?
The interpretation that focuses upon the critical theme is; The word "war" shows that this poem is actually a "spring" poem that is anti-war in meaning.
What is the interpretation of the poem?From the poem titled there will come soft rains, we see that if the war we had was over, nobody would have cared.
Now, wars tend to do some damage and It means there must have been damages to the animal's habitat during that war. Thus, If you were an animal and then found out that humanity was gone, you would be happy since they won't be able to destroy your habitat again.
Thus, the interpretation that focuses on the central theme is the word "war" shows that this poem is actually a "spring" poem that is anti-war in meaning.
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How did hine differ from other documentary photographers of the time? (site 1)
The way in which Hine differed from other documentary photographers is; As explained in the answer below.
What is the way in which photographers differ?At the beginning of the twentieth century, photographers used its growing influence to expose the evils in the society, of which the prosperous, self-indulgent Belle Époque chose to ignore.
Now, Hine was worked in local factories as a youth and attended the State Normal School in Oshkosh as a young adult and then he became a teacher and school photographer at New York.
Hine was really determined to teach his students compassion and respect for immigrants and as a result, he began to photograph immigrants coming through Ellis Island which led a full-time photographer.
He produced documentary photography for social reform and showed the world the real people that he found with pictures and photo essays: Close -ups of children working, kids in mills, orphans on the streets, sweatshops, adult laborers, immigrant families, and struggling individuals.
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