Chemistry High School

Help please!!!!!!!!!!!!!!!!!!!!!!!!

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Answer 1

The answer is n2+3h2=2nh3

Related Questions

Which of the following chemical equations follows the law of conservation of mass?

Answers

Answer:

The third choice

Explanation:

The law of conservation of mass tells us that the mass of the reactants and products in a chemical reaction will be equal to one another. Equations follow the law of conservation of mass when they are balanced, which means that they have the same number and type of atoms on each side.

When individual atoms are counted, the third choice has the same number and type of atoms on each side: 1 gallium, three cesium and three fluorine.

Please help :)
It’s a science thing for 7th grade

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Answer: The first question is chemical The second one is Physical

Explanation:

show the path to the formation of sodium calcium and aluminum bases please help me

Answers

Answer:

i hope this helps :)

Explanation:

please mark brainlest

Answer:

dunno

Step-by-step explanations:

What is the net ionic equation for the following reaction?
Rb2CrO4(aq) + 2AgClO(aq) --> 2RbClO(aq) + Ag2CrO4(s)

Group of answer choices

Rb+(aq) + ClO-(aq) --> RbClO (s)

2Rb+(aq) + CrO42+(aq) --> Rb2CrO4 (s)

Ag+(aq) + ClO-(aq) --> AgClO (s)

2Ag+(aq) + CrO42+(aq) --> Ag2CrO4 (s)

Answers

Ag + (aq) + CI- (aq)

An industrial synthesis of urea obtains 87.5 kg of urea upon reaction of 68.2 kg of ammonia with excess carbon dioxide. Determine the theoretical yield of urea and percent yield for the reaction.

Answers

Answer:

The theoretical yield of urea = 120.35kg

The percent yield for the reaction = 72.70%

Explanation:

Lets calculate -

The given reaction is -

[tex]2NH_3(aq)+CO_2[/tex] →[tex]CH_4N_2O(aq)+H_2O (l)[/tex]

Molar mass of urea [tex]CH_4N_2O[/tex]= 60g/mole

Moles of [tex]NH_3[/tex] = [tex]\frac{62.8kg/mole}{17g/mole}[/tex] (since [tex]Moles=\frac{mass of substance}{mass of one mole}[/tex])

= 4011.76 moles

Moles of [tex]CO_2[/tex] = [tex]\frac{105kg}{44g/mole}[/tex]

= [tex]\frac{105000g}{44g/mole}[/tex]

= 2386.36 moles

Theoritically , moles of [tex]NH_3[/tex] required = double the moles of [tex]CO_2[/tex]

but , [tex]4011.76<2\times 2386.36[/tex] , the limiting reagent is [tex]NH_3[/tex]

Theoritical moles of urea obtained = [tex]\frac{1 mole CH_4N_2O}{2mole NH_3}\times4011.76 mole NH_3[/tex]

= [tex]2005.88mole CH_4N_2O[/tex]

Mass of 2005.88 mole of [tex]CH_4N_2O[/tex] =[tex]2005.88 mole \times\frac{60g CH_4N_2O}{1mole CH_4N_2O}[/tex]

= 120352.8g

[tex]120352.8g\times \frac{1kg}{1000g}[/tex]

= 120.35kg

Therefore , theroritical yeild of urea = 120.35kg

Now , Percent yeild = [tex]\frac{87.5kg}{120.35kg}\times100[/tex]

72.70%

Thus , the percent yeild for the reaction is 72.70%

Eight ounces (1 fl. Oz = 29.57 ml) of orange juice contains 160% of the recommended daily allowance of vitamin c (rda = 75-90 mg for adults). How many milliliters of the orange juice will provide 100% of the recommended daily allowance?

Answers

33 is the answer it’s 33

What type of molecule is shown below? A. Alcohol B. Ether C. Ketone D. Aldehyde

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B. Etherrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

Ether is the type of molecule. Hence, option B is correct.

What is organic chemistry?

Organic chemistry teaches us about the structure, properties, composition, reactions, and preparation of carbon-containing compounds.

Ether is an organic compound with an oxygen atom bonded to two alkyl or aryl groups. Ether's structure is same as alcohol.

Hence, option B is correct.

Learn more about organic chemistry here:

brainly.com/question/14623424

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What volume is occupied by 2.33 miles of an ideal gas at 0.953 atm and 44°C

Answers

Answer:

6663.6

Explanation:

Molarity is measured in
A.) moles per mL

B.)moles per kJ

C.)moles per kg

D.)moles per L

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answer D moles per L

A 25.0g piece of aluminum sits in a room and cools. It loses 4300.0 J of heat. If the initial temperature of aluminum is 125.3°C, what is the final temperature? The specific heat capacity of aluminum is 0.900 J/g°C.

Answers

Answer:

-65.8C

Explanation:

The amount of solar radiation changes due to the
WILL MARK BRAINLIEST!!

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Due to the variations in the sun-earth distance.

Hope it helps *-*

For a solution, [H+] = 3 x 10-11M.
What is the pH?

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Answer:

pH≈10.5

Explanation:

-log(3 x 10-11)≈10.5

HELP ASAP !!! PLS ITS DUE IN LIKE 4 MINUTES

Answers

Answer:

they have the same structures in common

How many liters are in 2.88 moles of CH4? Round your answer to the hundredths place (2 decimal place)
HELPPO ME PLZ

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64.50 because theirs 22.4L in one mole if u multiply that by 2 u get 64.51 u round that and get 64.50

Calculate the percentage composition of sugar, C12H22011.

Answers

Answer:

%C= 42.1

%H=6.5

%O=51.4

Explanation:

Mass%=(mass/total)× 100%

Drag the tiles to the correct boxes to complete the pairs.
Nelly goes shopping on a weekday. She picks up protein powder so she can make a protein shake. She buys a double cheeseburger on her way home. She eats part of it, and then stores the rest of it in a paper bag so she can eat it later. Later in the day, she puts together several small packages of candies as gifts for her nieces and nephews. She labels each package and sends it through the mail.

Match each item or action with the organelle it could represent.

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Paper bag vacole
Packaging candles

Protein shake -------------> Ribosome

Paper bag -------------> Vacuole

Packing candles -------------> Golgi Apparatus

im not 100% sure if paper bag and packing candles is correct.

One example of parasitism is the relationship between barnacles and whales or sea turtles. True or false? If false, why?
PLEASE ANSWER QUICKKK

Answers

Answer:

True

Explanation:

it is a Predation

hey y'all i just want to know, do whales and dogs have a common ancestor?

Answers

yes

Explanation:

Which suggests that in an earlier time whales and dogs could have evolved from the same organism. the common ancestor in the 2 animals share notible traits. the pakicets was one of the whales ancestors and the grey wolf was the dogs ancestor.

Which of these is a benefit of fuel cell cars?

A. Fuel cell cars reduce the use of fossil fuels.
B. Hydrogen fuel is volatile.
C. Fuel cell cars are quickly recharged.
D. Hydrogen fuel is a limited resource.

Answers

Answer:

Explanation:

There are no vehicle emissions other than water vapor. This means no pertroleum products and no fossil fuels. :)

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Choose the correct name for each acid. Click here
to access the common polyatomic ion sheet.
HNO2:
DONE
HI:
DONE
H3PO4 :
DONE

Answers

The correct name of HNO₂, HI and of H₃PO₄ is nitrous acid, hydroiodic acid and phosphoric acid respectively.

What are acids?

Acids are those substances in which carboxylic acid (-COOH) is present and pH value of acids falls in the range of 0 to 6.9.

Name of the HNO₂ compound is nitrous acid, of HI is hydroiodic acid and of H₃PO₄ is phosphoric acid.

Hence name of the HNO₂, HI and of H₃PO₄ is nitrous acid, hydroiodic acid and phosphoric acid respectively.

To know more about acids, visit the below link:

https://brainly.com/question/24375075

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Answer: HNO2 nitrours acid

HI Hydroiodic acid

H3PO4 phosphoric acid

Explanation: edu

Venus Fly trap is a great example of which type of tropism?
a
Thigmotropism
b
Gravitropism
c
Phototropism
d
Hydrotropism

Answers

It’s A: Thigmotropism

True or false: The phenolphthalein indicator changes colour close to the point of neutralization which shows the end-point of the titration.

Answers

Answer:

True

Explanation:

A titration can be defined as the experiment where the volume of known con concentration is mixed into another solution whose concentration is not known.

Most of the titration are acid-base titration. When performing titration the indicator which is used is usually phenolphthalein. The end point of the titration is the point where the indicator changes its color.

In case of acid base reaction, the end point is achieved when the phenolpthalein turns faint pink in color from transparent.

Hence, the given statement is correct, the indicator changes its color close to the end point of titration.

HELP ME ASAP PLZZ 21 POINTS

Answers

Answer:

A, D, F

Explanation:

Cold currents usually go along with Earth's rotation while the warm waters are subjected to the coriolis effect and go in a direction against Earth's rotation.

What’s the Mole ratio between fe and s

Answers

Answer:1:1

Hope this helps!

Explanation:

You are decomposing 2.00 mol of baking soda according to the following equation:
2 NaHCO3 -> Na2CO3 + CO2 + H2O
If you only collected 0.750 mol of Na2CO3 after the reaction finished, what was the
percent yield?
75.0%
62.5%
37.5%
25.0%
Question 6 (1 point)
✓ Saved

Answers

I’m not sure but I’m thinking 75.0% btw if you want an exact answer you need to offer more than 5 points

The chemical formula for gold (III) oxide
ionic compounds

Answers

Answer:

Gold(III) oxide (Au2O3) is an inorganic compound of gold and oxygen with the formula Au2O3. It is a red-brown solid that decomposes at 160 °C. (Au203 <---)

Question 15 (3 points)
How are cations and anions related to metals and nonmetals?

Answers

Answer:

uff mere dil ma ture kali chadiya ha uff tumi apne buni ha

Answer:

Cations (positively-charged ions) and anions (negatively-charged ions) are formed when a metal loses electrons, and a nonmetal gains those electrons. ... And all of them form an anion with a single negative charge.

The atmosphere is the air surrounding Earth and is made up of 78% _____, 21% oxygen, and other trace gases. Please help this is urgent!!

Answers

The Earth is made up of 78% of water!!

If 0.0015 moles of NaOH is dissolved in 11 L of water, what is the pH of the
solution?

Answers

Answer:

pH = 10.15

Explanation:

NaOH is a strong base so it dissolves completely.

Calculate your [OH-] first by dividing the moles of OH- by the volume.

0.0015 mol OH- / 11 L = 0.00014

Then, calculate the pOH:

pOH = -log[OH-] = -log(0.00014) = 3.85

pOH + pH = 14, so pH = 14 - pOH = 14 - 3.85 = 10.15

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Answer: we'll for sunny days that we'll be high pressure and for low pressure that we'll be cloudy and foggy moist days .

Explanation:

Other Questions

Predict the genotypic ratios of the offspring from crossing the following:Tt x Tt 1:2:1 3:1 9:3:3:1 1:4 Subtraction + Decision and LoopThis is a twist on the previous exercise that will help you review loops and decision structures. You will again ask the user to enter two numbers. However, you will ALWAYS subtract the smaller number from the larger number to ensure that you never get a negative number for an answer. You do this by checking the numbers and switching them if they are not in the right order (larger then smaller). All of this checking, switching, subtracting, and output of the answer should occur in a function.((( THIS WAS THE PREVIOUS EXERCISEFunction Basics - Arguments and ParametersThis is another easy exercise to test your knowledge of the fundamentals. In main(), ask the user to enter two integers. Pass those two integers to a function that will subtract one number from another. This function must also output the answer to the user.Output:Enter two integers (separated by a space) and this program will subtract them: [user enters: 5 7]5 - 7 = -2Notes and Hints:1) From now on, you must use a function prototype for all programs that use functions. Don't expect me to ask for it in each exercise. )))Finally, ask the user if they would like to run the program again. By now, you should know exactly what type of loop to use.Output:Enter two integers (separated by a space) and this program will subtract the smaller from the larger: [user enters: 7 5]7 - 5 = 2Do you want to run this program again? [user enters: y]Enter two integers (separated by a space) and this program will subtract the smaller from the larger: [user enters: 5 7]7 - 5 = 2Do you want to run this program again? [user enters: n]Notes and Hints:1) As always, make sure you accept an upper or lower case 'Y' Who was Edwin Moore?a.Commander of the Texas Navy during Lamar's administrationb.Chief of the Cherokee tribec.General of the Texas Army during Houston's presidency Two fifth grade classes are attending an amusement park as a field trip. Their teachers purchased the tickets for the class and the parent chaperones. Mrs. Lin purchased 3 child tickets and 17 adult tickets, which cost a total of $558. Mr. Shepherd purchased 3 child tickets and 11 adult tickets, paying a total of $378. What are the ticket prices? The poet uses the bird, the cage, and the woodland scenes A) as a technique to develop the overall tone of the poem. B) as devices to foreshadow the events recalled in the rest of the poem. C) to show the frustration that comes with wanting something you cannot have. D) to show the beauty of the coming of spring after a harsh and unforgiving winter. Jabar earns $5 for the first 10 pounds of newspaper he recycles, then $0.25 for each additional pound. Which expression represents the amount heearns for recycling p pounds of newspaper if p > 10?A5 +0.25 (p - 10)B(5 +0.25) P5 + 0.25pD5 (10) +0.25p Read the following excerpt from Levitt and Dubners Freakonomics.There is a tale, The Ring of Gyges, that Feldman sometimes tells his economist friends. It comes from Platos Republic. A student named Glaucon offered the story in response to a lesson by Socrateswho, like Adam Smith, argued that people are generally good even without enforcement. Glaucon, like Feldmans economist friends, disagreed. He told of a shepherd named Gyges who stumbled upon a secret cavern with a corpse inside that wore a ring. When Gyges put on the ring, he found that it made him invisible. With no one able to monitor his behavior, Gyges proceeded to do woeful thingsseduce the queen, murder the king, and so on. Glaucons story posed a moral question: could any man resist the temptation of evil if he knew his acts could not be witnessed? Glaucon seemed to think the answer was no.The excerpt serves as which of the following in relation to the authors argument?a claim that most people are moralan example of morality in the workplacea conclusion about morality in the workplacea counterclaim to the idea that most people are moral A researcher randomly asked 284 people how they prefer their eggs cooked and if they prefer orange juice or coffee with their breakfast. The two-way table displays the data.Suppose a survey respondent is randomly selected. Let event F = fried eggs and let event O = orange juice. What is the value of P(O|F)?StartFraction 22 Over 126 EndFractionStartFraction 50 Over 158 EndFractionStartFraction 41 Over 126 EndFractionStartFraction 41 Over 91 EndFraction The value in this assignment statement ( age= textbox2.text) Help! Please?? Am stuck on this what is the area of the following shape Sylvie needs $110 for a concert ticket. She already has $16 and she can earn the rest by working 10 hours at her job. If h represents her hourly earnings, which of the following equations can be solved to find Sylvies hourly earnings? Select all that apply.(Two Answers!)A. 110 16 = 10hB. 110 = 16h + 10C. 16 = 110 hD. 110 = 16 + 10hE. 110 + 16 = 10hNote: I already know one of them is D, I don't know what the other one is though. explain what will you do to obtain one of the financial funding options to further your studies Please can somebody write me a short letter, it can be made up i dont care. help me simplify this Are these cells animal cells, or are they or plant cells? 4(p-5) = 2p+18 i need all the steps PLS HURRY How does this artwork show Greek ideals about art?It shows how the Greeks loved sports more than art.It shows how the Greeks sculpted with many details.It shows how the Greeks made more statues of men than women.It shows how the Greeks worked with materials that did not last a long time. I need help with question can anyone help me? HARD QUESTION 100 POINTS