100.00g of MgCl2 is weighed out for an experiment; how many moles does this comprise?

Answers

Answer 1

Answer:

1.05mol

Explanation:

Given parameters:

Mass of MgCl₂  = 100g

Unknown:

Number of moles  = ?

Solution:

The number of moles in a compound can be derived using the expression below:

        Number of moles = [tex]\frac{mass}{molar mass}[/tex]  

Molar mass of MgCl₂   = 24 + 2(35.5) = 95g/mol

  So',

    Number of moles  = [tex]\frac{100}{95}[/tex]   = 1.05mol


Related Questions

can someone please help me will mark you brainliest !!!

Answers

Warmer climate on edge 2020

Answer: The answer is A

Explanation: so people can easily move from country to country, the rugged terrain, and the father south the warmer. Hope this help :)

Timothy McVeigh, the Oklahoma City bomber, is an example of a terrorist entity operating on which of the following scales?
O Local
O National
O Regional
O International
O Global

Answers

Timothy McVeigh, the Oklahoma City bomber, is an example of a terrorist entity operating on a national scale. Therefore, the option B holds true.

What is the significance of Timothy McVeigh?

Timothy McVeigh was a known and wanted domestic terrorist, who worked for revolts against the United States of America's federal government. He led a terrorist attack in 1985, which caused a lot of destruction as well as loss of lives.

The scope of terrorism of Timothy McVeigh was limited to the US boundaries. He did not want to spread violence outside the United States. As his terrorist operations were domestic, he can be said as a national terrorist.

Therefore, the option B holds true and states regarding the significance of Timothy McVeigh.

Learn more about Timothy McVeigh here:

https://brainly.com/question/1318966

#SPJ5

Answer:

Local

Explanation:

I took the test.

In which city is the U.S. Capitol Building located

Washington, DC
Philadelphia, PA
New York, NY
Boston, MA

Answers

Answer:

Washington, D.C.

Explanation:

At the eastern end of the National Mall on a plateau 88 feet above the level of the Potomac River, commanding a westward view across the U.S. Capitol Reflecting Pool to the Washington Monument 1.4 miles away and the Lincoln Memorial 2.2 miles away.

Answer:

Washington, D.C.

Explanation:

HURRRYYYYYYYYYY*TEN points for you!!!*

What is used to determine the relative age of two rocks?


(image below)


Question 4 options:


a)


Vertical position



b)


the presence of unconformities in the rocks



c)


radioactive dating of each layer



d)


relative age cannot be determined

Answers

Answer:

b

Explanation:

tuyfuyxyfc

How does climate affect population patterns in Russia?

Answers

Answer:

Russia is experiencing major changes in its ecosystem and is warming 2.5 times faster than the average global rate. In addition to melting ice in the Arctic and the loss of drinkable water due to depletion of the ozone layer, snow is thawing in Siberia and in northern regions of Russia

Explanation:

The political tension between the United States and the Soviet Union that followed World War II resulted in __________.
A.
a famine
B.
the Iron Age
C.
the Cold War
D.
an energy crisis

Please select the best answer from the choices provided

answer is: c

Answers

Answer:

C

Explanation:

Answer:

answer is c

Explanation:


True or false: Europe's closeness to other continents, like Asia, Africa, and the Americas, gives it an advantage for exploration and trade.
O True
O False

Answers

Answer:

The answer would be false, I'm pretty sure.

Explanation:

Answer:

True

Explanation:

can someone please help me will mark you brainliest !!

Answers

Answer:

slow economic recovery

Explanation:

please helpp ill give out the brainleist.

Answers

Answer:

frequent rain ans is 4 no

many lake ans is 3 no

frequent earthquake ans is 2 no

and scarce food ans is no 1

I think so

2. Which of the following is a commonality between New Zealand and Australia?
French heritage
British heritage
Oriental heritage
Indian heritage

Answers

Answer: British heritage

Explanation:

PLEASE HURRY! 10 points! Analyze the map below and answer the question that follows.

Answers

Answer: its map of canada

Explanation:

What can we personally do to help the deforestion problem?

Answers

Answer And Explanation:

To help with the deforestation problem you can plant a tree where you can, go paperless and support the products of companies that are committed to reducing deforestation.

-Plant a Tree where you can.
-Go paperless at home and in the office.
-Buy recycled products and then recycle -them again.
-Support the products of companies that are committed to reducing deforestation. ...
-Raise awareness in your circle and in your community.

define the following terms a).hydrosphere b).biosphere ​

Answers

Answer:

Biosphere -- the global ecosystem composed of biotic (living) factors and the abiotic (non-living) factors from which they derive energy and nutrients.  AKA the ecosphere, is the worldwide sum of all ecosystems (all life on earth)

Hydrosphere -- the combined mass/volume of water located either on, under, and above the surface of a planet, minor planet, or natural satellite. This water is still counted regardless of its state (ie. liquid...gas...solid) and takes form as what we see as Rivers, Lakes etc

HOPE THIS HELPS!

Which BEST explains why a terrorist group might target a region's infrastructure?
- To prompt foreign countries to send aid
- To bring economic activities to a halt
- To make the population question the government's legitimacy
- To overthrow the existing government
To unite the people of the area

Answers

Answer:

To bring economic activities to a halt

Explanation:

Terrorists motive is always to target country's economy for their group benefit and for establishing their rule in the affected country.

Hope it helps!

Answer:

The answer is to bring economic activities to a halt.

Explanation:

The person above me has a great explanation ↑

can someone please help me will mark you brainliest !!!!

Answers

Answer:

child care and educational services

Explanation:

D is the answer !!!!!

how did laws ending slavery affect different populations of people in the southeast

Answers

Answer:  Most white Southerners reacted to defeat and emancipation with dismay. Many families had suffered the loss of loved ones and the destruction of property. Some thought of leaving the South altogether, or retreated into nostalgia for the Old South and the Lost Cause of the Confederacy. (in my opinion, I think they reacted with the law of abortion because since slavery ended they needed their own families to work/labor for a living and would not have to pay)

Explanation:

Why is the berlin wall an enclave?

Answers

Yes, the Berlin Wall was near West Berlin that became an isolated enclave but hostile land.

what is the latitude and longitude of atomic bomb in japan? I'm trying to find it but I can't ​

Answers

Answer:

longitude 132°27'29" E and latitude 34°23'29" N

Use the information you learned in the Plate Tectonics activity to answer the following question.

The Himalayas are an example of a mountain range created by two plates colliding at a __________ boundary.
A.
transform
B.
divergent
C.
convergent
D.
oceanic

Please select the best answer from the choices provided
A
B
C
D

Answers

Answer:

It's the C

Explanation:

The Himalayas are an example of a mountain range created by two plates colliding at a convergent boundary.

Hope this helps, have a fantastic day

Answer:

its c

Explanation:

Which direction is Carthage from Rome

Answers

Answer:

Distance between Carthage and Rome is 590 kilometers (367 miles). Driving distance from Carthage to Rome is 1289 kilometers (801 miles).

Hope this helps!

xoxo,

cafeology

Carthage is south of Rome in Tunisia

State three benefits that can be derived from crop production​

Answers

Answer:

Improving productivity of field and forage crops. Ensuring sound use of natural resources, reducing soil erosion, and improving soil quality. ... Helping farmers plant crops suitable to local and regional climate and crop management needs.

Brianliest plzzzz

What is external migration?

Answers

External migration means immigrate to a country from another country

Identify and describe three causes of ethnic conflict, and give an example of each.

Answers

Answer:

I know I'm a bit late but I hope this helps someone else!

Explanation:

There are three main causes of ethnic conflicts. Cause one is things like language and religion, cause two is things like political, social and economic factors and our cause three is things like newspapers or lies / rumors spread by other ethnicities. 

Cause One: Language and Religion

Language and religion are major reasons for conflict. Take the Old City of Jerusalem for example. All four religions cramped together; they're bound to have a ton of conflicts. 

For the language part of it, if you can't understand what someone is saying then it's going to be hard to work out your differences. For example, if someone is saying something in German to a French person, the French is probably going to think he's being yelled at because the German language is so harsh.

Cause Two: Politics, Social Structure, And Economy

For the political side of things, if there are more of one ethnicity in power, other ethnicities will assume that they aren't being treated fairly, and conflict will break out.

For the social part, there's most likely going to be a natural separation of ethnicities because they feel more comfortable together. It's like in the lunchroom, people in a friend group usually stick together, and if a newcomer tries to break into the friend group it's kinda hard because you aren't familiar with said newcomer and they make you nervous. So if someone from Ethnic Group A comes over to Ethnic Group B, Group B will treat them strangely, leading to the person from Group A starting to spread rumors and finally a conflict. Another example is when a store worker sees a teenager in a store by themselves. It happens to boys more than it does girls, which is sad. The store worker might start following the teenager discretely or out-right tell them to leave. This is a good example of social discrimination.

For the economy portion, if one ethnic group has more money than the other, then Ethnic Group A will assume that Ethnic Group B has more power, and will try to 'overthrow' the 'tyrants'. A good example of this is the Tutsi and the Hutu people. The Tutsi were favored by the invaders coming in and therefore the Hutu blamed them for their harsh treatment.

Cause Three: Lies and Propaganda

There will definitely be conflict between ethnic groups if lies are being spread about eachother. If someone from Ethnic Group A lies and says something about Ethnic Group B, then Ethnic Group B will come out and tell a lie about Ethnic Group A and the cycle will repeat and make a giant snowball of lies until the snowball becomes so big it smushes everyone's reason and they go to war. Well, they get in a conflict.

What causes glaciers to move?

Answers

Answer:

By sliding

Explanation:

Gracious move by a combination of deformation of the ice itself and motion at the glacier base. At the bottom of the glacier, ice can slide over bedrock or shear subgiacial sediments.

Answer:Glaciers move by a combination of

(1) deformation of the ice itself and

(2) motion at the glacier base. At the bottom of the glacier, ice can slide over bedrock or shear subglacial sediments.

Which of the following are NOT sources of freshwater?
a. Rivers
b. Lakes
c. Wetlands
d. Ocean

Answers

Answer:

d

Explanation:

D oceans because oceans are salt water

The population pyramid shown represents a community that has been affected by human migration.


A. Explain ONE economic reason why people under the age of 50 are unlikely to migrate to this community.


B. Describe ONE social pull factor that would draw migrants who are over age 65 over long distances to the location shown in the pyramid.


C. Explain ONE reason why the population for females aged over 80 can be a slightly larger group than the women aged 75 to 79 population.


D. Explain the degree to which the population pyramid shown can be used to predict local needs for social welfare services.

Answers

Answer:

Population pyramid is used to show the changes taking place in demography of country.

Explanation:

The population pyramid shows the demographic structure of a community. Births, deaths, and migration are three important components of population change that alter the trends in the population composition of a place. The main economic reason why the people under the age group of 50 are less likely to migrate to the community is due to they have good earnings and better standards of living.  One social factor that can attract the migrants that are over the age of 65 is social linkages and cultural ties. The population of females that is vier 80 years of age is more in numbers due to they have better health conditions.  The population pyramid can be used to show social welfare as it harnesses human capital over time.

Human migration is the shifting from one place to another place;

(A) The age of people under the age of 50 is for a good job, earnings, and standard of living.

(B) One factor that pull the migrant people over the age of 65 are the social relationship and cultural factor.

(C) The reason for females over 80 is high because they have better health conditions.

(D) The population pyramid is used to show harness human capital over a period.

What is human migration?

Human migration is the permanent change of residence by an individual or group; there are different types of human migration to begin with, there is a distinction to be made between domestic and foreign migration.

Domestic is the one who is migrated from one city to another and foreign is the one who is permanently shifted from one country to another.

Thus, the main reason for human migration is better jobs and earnings.

For further details about human migrations refer to this link:

https://brainly.in/question/308050?

What causes solar radiation to warm the Earth?

Your answer:

the Coriolis effect


the lunar effect


the shadow effect


the greenhouse effect

Answers

the greenhouse effect i think

Answer:

it's the greenhouse effect

Explanation:

have a good test!

Which of the following statements about irredentism is true?
-Devolutionary movements are a common cause of irredentist movements.
-Devolution and dissolution are both common effects of irredentist movements
-Irredentism is most likely to have little effect on a state and its people.
-irredentism is most likely to occur in a state that has a culturally homogeneous population
-Inredentis commonly occurred during the 19th century, but rarely occurs today

Answers

Answer:

Irredentism is most likely to occur in a state that has a culturally homogeneous population.

Explanation:

It occurs where two region's shares strong diplomatic and cultural ties.

hope it helps!

Origami is the Japanese art of paper folding. The diagram below represents
an unfolded paper kabuto, a samurai warrior's helmet. From the kabuto below,
which of the following are pairs of congruent angles?
Check all that apply.

Answers

Answer:

A. QRC and QRO

C. IRS and MRS

D. CRU and IRU

Explanation:

See image for explanation

What do y'all think of Muslims? (It's for a project) please honesty I need a paragraph short or long

Answers

Answer:

I think their ok!

Explanation:

Due to people constantly thinking all Muslims are related to 9/11, most of the religion has gotten a bad impression. But people shouldn't judge them for that in my opinion, and they should be treated better. But this is just my opinion so-

Answer:

I have a positive outlook on Muslims

Explanation:

Muslims are honestly so cool. We give them so much hate and negativity but they're still strong and refuse to give up on their faith. They're just trying to practice their religion, just like us, but we randomly pick on them and bully them and call them "terrorists" and "oppressors". Half of the things Muslims do Christians and Jews do, or are supposed to do. For example, we call hijabis oppressed when Jesus literally told us to cover up and nuns wear the same clothes. We laugh at them for not eating pork and wine when Jews also have stuff that are kosher and not kosher. I mean, even the news is against them! "Islam hates us" almost every incident related to a man in a beard screaming "Allahu Akbar" (which is an Arab saying, not an Islamic saying) is called a terrorist but every white man that does the same thing is "mentally ill". Muslims are also really strong. They're being bombed by the US and killed by Isr*el and terrorized in France and locked up in China and raped/murdered by India yet they're so strong and refuse to give up Islam. I'd give up my religion in a heartbeat if I were facing death. But everyday they die because of the beliefs they have. Let me repeat that. Muslims are not considered human because of the religion they believe in. It seems like we're the horrible, violent, disgusting, inhumane, terrorists rather than them.

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