How many moles of hydrogen are contained in 55.90 g of ammonium dichromate, (NH4)2Cr2O7?

Answers

Answer 1
There are 252.07 grams of ammonium dichromate per mol of ammonium dichromate molecules. There are 8 atoms of hydrogen per molecule of ammonium dichromate.

Convert grams to mole of molecules. And then molecules to atoms.

55.90 / 252.07 = moles of molecules

Since there are 8 hydrogen per 1 molecule multiply this by 8.

55.90 * 8 / 252.07 = 1.77 moles of hydrogen

Answer 2
To calculate the molar mass of a compound, you multiply the subscripts of each element times its molar mass (atomic weight in g/mol).
(NH
4
)
2
Cr
2
O
7
When there is no written subscript, it is understood to be
1
. Also, when elements are enclosed in parentheses, the subscripts on the inside are multiplied by the number outside the parentheses.
Molar Masses of the Elements
Nitogen:
14.007 g/mol

Hydrogen:
1.00794 g/mol

Chromium:
51.9961 g/mol

Oxygen:
15.999 g/mol
Molar Mass of Ammonium Dichromate
(
2
×
14.007
)
+
(
8
×
1.00794
)
+
(
2
×
51.9961
)
+
(
7
×
15.999
)
=
252.06 g/mol

Related Questions

SOLVE THE FOLLOWING EQUATIONS FOR ALL VALUES GREATER THAN OR EQUAL TO ZERO AND LESS THAN 360⁰

2SINꝊ - 1 = 0

Answers

We have:  2sinx - 1 = 0 ( 0 ≤ x ≤ 360° )

⇔ 2sinx = 1 ⇔ sinx = 1/2 ⇒ x = 30°

P/s: i don't know '' Ꝋ '' means so i change it to ''x''

ok done. Thank to me :>

which of the following statements if true of high school dropouts

Answers

It is statistically proven that high school dropouts have a higher change of ending up in jail.

I am not sure if your test has multiple choices, if so- please comment them to this response and I'll be sure to directly answer which option is correct!

I hope this helps!

A country with a population pyramid that is largest at the bottom is MOST LIKELY to experience a shortage of which of the following?

Answers

A country with a population pyramid that is largest at the bottom would most likely experience a shortage of food and jobs.

What is a population pyramid?

A population pyramid is also referred to as age-gender pyramid and it can be defined as a graphical representation of the distribution of a population based on age groups and gender.

Generally, the distribution of a population based on age groups and gender typically takes the shape of a pyramid as the population grows and it comprises two (2) histograms.

In conclusion, a country with a population pyramid that is largest at the bottom would most likely experience a shortage of food and jobs.

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what is the most noticable difference between human brains and other mammalian brains

Answers

Answer:

A

Explanation:

association areas deal with higher mental functions such as thinking, planning etc. and occupy about 3/4 of the cortex.

why cant students opt out of day classes and have the choice to do online rather then being pushed to go to class and end up ditching class and failing for no participation

Answers

Answer:

Students are simply not motivated in online classes. They are usually easy A's and are time efficient, but student learning outcomes tend to be lackluster. ... Perhaps the biggest disadvantage of taking an online class is the absence of face-to-face interaction between the teacher and their students. It also doesnt benefit the school which is what most schools really care about.

Explanation:

its july 4th and you are enjoying a fireworks display with your friends. explain how the sounds of firewors travel through the air to your auditory cortex. include ALL auditory structors invloved, and how they function as you take in the fireworks display

Answers

Answer:

It all comes down to the chemical reaction that happens after the fuse is lit. The burning gunpowder releases hot gas that expands rapidly; when the gas expands to the point that it runs out of room within the firework, the resulting explosion causes a blast wave.

The vibrations from that blast wave have the potential to cause permanent damage to the delicate hair cells of the inner ear.

At close range, fireworks are typically between 150 and 175 decibels—well above what's safe for your hearing.

5 ways to protect your hearing

1. Keep a safe distance

One way is to maintain a safe distance from the display. The farther you are from the sound, the less harmful the sound is to your ears, so your distance from the sound of the fireworks can make all of the difference in terms of decibel level and hearing safety. A distance of around 500 feet will still give you a great view, but without the sound pressure that can damage the tiny hair cells in the inner ear.

2. Skip the home displays

Where you view your fireworks can also affect your hearing. Experts recommend attending a community display rather than setting off your own fireworks at home. Not only are fireworks dangerous and best left to trained professionals, but there is usually a roped off area located a safe viewing (and listening) distance away from the show.

3. Bring—and wear!—earplugs and earmuffs

If you intend to sit as close to the action as possible, or if you are determined to create your own display, protect your hearing and that of your children. Inexpensive foam earplugs can be found in drugstores and pharmacies, and work well for adults; earmuffs (basically foam-filled cups that cover the ears) are better for small children because earplugs sometimes don’t fit and can be a choking hazard.

4. If you buy your own fireworks, buy these

If you are planning your own fireworks display, the good news is you can customize your selection for reduced noise. All fireworks come with a noise level rating, so selecting quieter fireworks will not only preserve a good relationship with your neighbors, it will protect your hearing as well. Quieter options include fountains, wheels, falling leaves and comets. While not completely silent, they crackle and whistle instead of creating a loud, explosive boom. All are created for spectacular visual display but less noise. If you buy fireworks, your fireworks provider should be able to direct you to those that are lower on the noise rating scale.

5. And avoid these  

What to avoid? Rockets, mines and any fireworks that have many blasts strung together tightly. These fireworks are created to make as much noise as possible.

Hope this helps, have a nice day/night! :D

HELP PUT "AUTHORIZATION OF SPENDING" IN A SENTENCE IN AP GOVERNMENT TERMS please ill give brainliest

Answers

Answer:

Authorization of spending is the government sanctioning the use of federal capital for various purposes, including but not limited to infrastructure, education, welfare and public parks.

Explanation:

Hey! I saw you were struggling with doing this for 80 words in another thread. I can do more of them, if you'd like, since I'm fairly good at it.

In what ways do cultures use land and resources differently than other cultures?

Answers

Answer:

The terms land culture or land-based culture are often used in reference to indigenous cultures that view their responsibility as land curators versus landowners. As such, land is also often connected to the identity and spirituality of individuals within the culture.

Cultures use the environment to their advantage as well as the available livestock, for instance, the incans built long mountainous roads that would make a difficult trek for humans carrying goods, therefore they used llamas, a native animal to the province to carry goods for merchants. This technique was hardly used in other civilizations.

I dont know sorry man

Which of the following describes the consequences of overgrazing?

I. Low precipitation
ll. Desertification
lll. Loss of arable land
lV. Soil erosion

Group of answer choices

II, III, and IV

I, II, and IV

I and II

I and IV

Answers

Answer:

Ii iii and iv

Explanation:

animals consuming too much grass leads to desertification and loss of arable land and soil erosion making the

quick question
how much DID wood chuck chuck if wood chuck could chuck WOOD?
no body really knows because no one saw him chuck wood when he chucking wood on a wood chuck chuck by sallys sea shore where sally sells sea shells by the sea shore

Answers

Answer:

dontknow how much

Explanation:

Answer:

WAW WOOD CHUCK AND SALLY GO BRRRRRRRR

Explanation:

THEY GO BRRRRRR

Order the steps of protein synthesis.

Amino acids are lined up in a sequence.
DNA is transcribed.
A ribosome binds to mRNA.
RNA is modified into mRNA.
Chemical bonds are formed and a protein
is produced.







Answers

Answer:

DNA is transcribed

RNA is modified into mRNA

A ribosome binds to mRNA

Amino acids are lined up in a sequence

Chemical bonds are formed and a protein is produced

A: Suppose scientist conpared the wind speeds and barometric pressure readings of two severe storms over the Atlantic Ocean. For one of the storms, the barometric pressure was 1,000 mb ( millibars ), and the maximum wond speed was 100 kmh (kilometers per hour). The second had a barametric pressure of 960 mb and the maximum wind speed of 180 kmh

A1: Interpret the intercept for thr wind speed in this context (i.e., as it pertains to the weather).​

Answers

Answer:

b

Explanation:

to what extent made the natural environment and the demands of pastoral economy influence social organization on Eurasian steppe lands

Answers

In terms of economics, nomads sought food, manufactured products, and luxury items that were only available from their agricultural neighbours. Pastoral peoples banded together politically and militarily at times to extort income from agricultural communities through trading, raiding, and extortion. Members of certain pastoral civilizations culturally acquired agricultural neighbours' religions, such as Judaism, Buddhism, Christianity, Islam, and Manichaeism. The European lands became a site of commerce of goods and a pastoral economy as a result of the demands of the pastoral economy.

The social structure of the Eurasian steppe regions was significantly influenced by the natural environment and the needs of the pastoral economy.

The wide grasslands and nomadic way of life in these areas influenced the social structure. Mobility was necessary for nomadic pastoralism to maintain animals, which resulted in social structures that were decentralized and adaptable.

Clan-based kinship networks and tribal ties developed, encouraging cooperation for defense and survival.

Trade routes encouraged cultural interaction and trade, which influenced political federations and alliances.

Because of how important defense and mobility were, leadership was frequently centered around capable military leaders.

Thus, environmental issues in the steppe and the necessity for resource management interacted to create distinct socio-political dynamics that had a lasting impact on governance, migratory patterns, and inter-tribal relations.

For more details regarding Eurasian steppe, visit:

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help :p
The pathology of dissociative disorders
can be emotional trauma or _______ trauma.

A. behavioral
B. dysfunctional
C. organic

Answers

Answer:

The pathology of dissociative disorders can be emotional trauma or (A) behavioral trauma.

I hope this helped at all.

The current GDP growth rate is −1%. Last year it was 2.1%. What does this tell you about the economy? Explain.

A. It is healthy because any growth rate in the past two years shows a successful economy.
B. It is healthy because any growth rate over −5% is considered positive for a large economy.
C. It is not healthy and contracting because there has been poor growth for two years.
D. It is not healthy and contracting because there was negative growth this year.

Answers

Answer:

A

Explanation:

because the economy improves

The current GDP growth rate tells about the economy that it is healthy because any growth rate in the past two years shows a successful economy. The correct option is A.

What is GDP?

Gross domestic product, also known as GDP, is one of the most popular.  Gross domestic product "in volume," or assessed at constant prices, is referred to as real gross domestic product (Real GDP).

Thus, price-related changes in GDP (inflation or price declines) are offset, allowing for a measure of economic growth. Nominal GDP continues to be the standard measure for long-term data, and real GDP is only used in practice to gauge GDP growth from year to year.

Therefore, the correct option is A. It is healthy because any growth rate in the past two years shows a successful economy.

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In the first sentence of the passage, the clause set off by dashes (“she adopted . . . sell”) serves primarily to explain Rowling's reversal

Answers

There are different types of clauses and some of them are:

Noun clauseAdjectival clauseAdverbial clause, etc.

What is a Clause?

This refers to the group of words which has a subject and verb and gives additional information about the sentence.

Please note that your question is incomplete so I gave you a general overview to help you get a better understanding of the concept.

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if the largest trade diameter of a raceway entering a pull box is 3", and it is a straight pull, the minimum size box allowed is

Answers

24" is the minimum size box allowed

what is the Brexit and how could this issue impact the global economy?

thank you!​

Answers

Brexit is an abbreviation of two English words: 'Britain' and 'exit' and refers to the withdrawal process of the United Kingdom (UK) from the European Union (EU). ... According to this rule, any Member State of the EU may decide to withdraw pursuant to its constitutional law.

The equation of the graphed line is 2x - y=-6.
What is the x-intercept of the graph?
6
O-3
0-2
O 2
O 6
NO
2.
1 2 3 4 5 6 7 X

4/3 -2 -11
-2-
-3

Answers

Answer:

2 is the x intercept of the graph

what dose x equal (9x+23) +(10x+6)

Answers

Answer:

(9x + 23) + (10x + 6) = 19x + 29

Explanation:

What are the three main jobs of a forensic scientist?

Answers

Answer:

The Forensic Scientist will lead teams, conduct independent investigations and reconstructions, and compile technical and administrative reviews of complex, serious, and major crime scenes. You will manage and preserve crime scenes until pertinent personnel arrives. You will testify in trials and hearings, and prepare records and reports.

Explanation:

PA BRAINLIEST

HOPE ITS HELP

GOD BLESS

What does it mean if a child is egocentric?

Answers

Answer:
Egocentric thinking is the normal tendency for a young child to see everything that happens as it relates to him- or herself. This is NOT selfishness. Young children are unable to understand different points of view. Hope this helps! :)

Write a paragraph about the costs and benefits of having insurance.
100pts

Answers

Answer:

The cost of insurance can be quite high especially for life insurance if obtained when one has a medical condition but can at least alleviate anxiety of spouses who worry about their financial security if their partner dies early. because then they can get financial help to pay for mortgages/rent etc. Also, for car insurance, the premiums can be high but if one gets in an accident, especially if one does not have fault, then the cost of repairs and some medical treatment will be paid.

Brainliest plz

Answer: Insurance provides an infusion of cash for dealing with the adverse financial consequences of the insured's death. Life insurance enjoys favorable tax treatment unlike any other financial instrument. Death benefits are generally income-tax-free to the beneficiary.

Explanation:

1 Type the correct answer in the box. Use a comma to separate the x-and y-coordinates of each point

The coordinates of the point on the unit circle that corresponds to an angle of 0 are ( )

The coordinates of the point on the unit circle that corresponds to an angle of 90° are

Answers

Answer:

0° = (1, 0)

90° = (0, 1)

Explanation:

The equation to solve for the coordinates of a point on a unit circle is:

x² + y² = 1

Hope it helps!

who is the father of science. ​

Answers

Answer:

Galileo Galilei

Galileo Galilei pioneered the experimental scientific method and was the first to use a refracting telescope to make important astronomical discoveries. He is often referred to as the “father of modern astronomy” and the “father of modern physics”. Albert Einstein called Galileo the “father of modern science.”

Explanation:

plz mark my answer in brainlist plz

Answer:

Galileo Galilei

Albert Einstein called Galileo the “father of modern science.” Galileo Galilei was born on February 15, 1564, in Pisa, Italy but lived in Florence, Italy for most of his childhood.

Hibernation, migration, and breeding can be attributed in part to __________.
A) fluctuations in the carbon cycle
B) fluctuations in the nitrogen cycle
C) fluctuations in the phosphorus cycle
D) fluctuations in seasons

Answers

Answer:

D) fluctuations in seasons

Explain why planning and preparation is the best way of reducing the effects of tropical storms (4 Marks)

Answers

Answer:

Governments can plan evacuation routes to get people away from storms quickly. Buildings can be designed to withstand tropical storms eg by using reinforced concrete. Buildings can also be put on stilts so they are safe from floodwater Flood defences can be built along rivers (eg levees) and coasts (eg sea walls

Explanation:

Planning and preparation is the best way of reducing the efforts of tropical storms as this helps in reducing the number of buildings which will be destroyed from it.

What are tropical storms?

Tropical storms occur on the Earth in the tropical regions near the equator region. Tropical storms are larger than that of normal storms, however they are not quite as powerful as that of hurricanes. Tropical storms include high wind speeds and heavy rainfall.

Planning the evacuation routes is important as it reduces the number of buildings which will be destroyed with time. Trained people who know what to do which reduces the number of deaths as more people will be rescued from it. Following these routes helps in keeping people away from the floods and debris. So, less people are injured or die.

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mga paraan sa pangangalaga sa bulkan patulong po pls​

Answers

kailangan nating bantayan ang bulkan upang malaman natin Kung kailan Ito sasabog

kailangan nating dumistansya SA bulkan ,para Kung sasabog man Ito malayo Tayo SA sasabugan nito

kailangan nating linisin ang paahan Ng bulkan

hope it helps

Write one example of multimedia authoring tool for graphics

Answers

Answer:

Hypercard (Mac)

Tool book (Windows)

PowerPoint (Windows)

Supercard (Mac)

Explanation:

choose any of these



1.buko
2. kesong puti
3. tinapang isda
4. bibingka (kakanin)
5. kape
pilian
Quezon
Laguna
Cavite
Batangas
rizal​

Answers

Answer:

para saan yan?

Explanation:

listahan ba yang para sa grocery?

Batangas Cavite QuezonLaguna Rizal

hope it helps
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