What’s the answer? I need an answer as soon as possible please!

Whats The Answer? I Need An Answer As Soon As Possible Please!

Answers

Answer 1

Answer:

1, 1, 2

Explanation:

1, 1, 2

Answer 2
N2O5 + H2O → 2HNO3

The coefficients for the N2O5 and H2O are technically 1; if you must provide a value for those reactants, then that would be it.

Related Questions

A tank 20.0cm by 50.0cm by 30.0cm will hold how many liters of water?

Answers

Answer:

30,000 cm^3

Explanation:

volume for rectangular prism is v=l×w×h

plug in known values and solve.

v=(30.0cm)(20.0cm)(50.0cm)=30,000cm^3


How are chemical equations balanced?

Answers

Use coefficients of products and reactants to balance the number of atoms of an element on both sides of a chemical equation.

HELP PLEASE❗️❗️‼️

An increase in temperature is an increase in.... ( there are two correct answers)
A.) Water molecules
B.) The melting point
C.) pressure
D.) Fun

Answers

C and B

Hope this helps!

For the reaction between aqueous silver nitrate and aqueous sodium chloride, write each of the following. The products of the reaction are aqueous sodium nitrate and solid silver chloride.
Complete equation
Complete ionic equation
Net ionic equation

Answers

Answer:

A balanced ionic equation shows the reacting ions in a chemical reaction. These equations can be used to represent what happens in precipitation reactions or displacement reactions.

Precipitation reactions

In a typical precipitation reaction, two soluble reactants form an insoluble product and a soluble product.

For example, silver nitrate solution reacts with sodium chloride solution. Insoluble solid silver chloride and sodium nitrate solution form:

AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)

The Na+ ions and NO3- ions remain separate in the sodium nitrate solution and do not form a precipitate. Ions that remain essentially unchanged during a reaction are called spectator ions.This means these can be ignored when writing the ionic equation. Only how the solid silver chloride forms is needed to be shown:

Ag+(aq) + Cl-(aq) → AgCl(s)

In a balanced ionic equation:

the number of positive and negative charges is the same

the numbers of atoms of each element on the left and right are the same

Displacement reactions

Displacement reactions take place when a reactive element displaces a less reactive element from one of its compounds.

A common type of displacement reaction takes place when a reactive metal reacts with the salt of a less reactive metal. For example, copper reacts with silver nitrate solution to produce silver and copper(II) nitrate solution:

2AgNO3(aq) + Cu(s) → 2Ag(s) + Cu(NO3)2(aq)

In this reaction, the NO3- ions remain in the solution and do not react - they are the spectator ions in this reaction. So, they can be removed from the ionic equation:

2Ag+(aq) + Cu(s) → 2Ag(s) + Cu2+(aq)

Question

Explain why this ionic equation is balanced:

Ba2+(aq) + SO42-(aq) → BaSO4(s)

Hide answer

There are the same numbers of atoms of each element on both sides of the equation. The total charge on both sides is also the same (zero).

Question

Balance this ionic equation, which represents the formation of a silver carbonate precipitate:

Ag+(aq) + CO32-(aq) → Ag2CO3(s)

Hide answer

2Ag+(aq) + CO32-(aq) → Ag2CO3(s)

Question

Balance this ionic equation, which represents the displacement of iodine from iodide ions by chlorine:

Cl2(aq) + I-(aq) → I2(aq) + Cl-(aq)

Hide answer

Cl2(aq) + 2I-(aq) → I2(aq) + 2Cl-(aq

Explanation:

this will help, I used this for my work x

AgNO₃ (aq) + NaCl (aq) → AgCl (s) + NaNO₃(aq) is the complete chemical equation taking place between the 2 reactants.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

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What would happen to a plant that did not perform cellular respiration in the light?

Answers

Answer:

Explanation:

Cellular respiration does not depend on light...  Some plants may go into a form of hibernation during winter when the amount of light during the day is less.  The reduction of plant growth and activity would reduce the need for the energy produced by cellular respiration.


Calculate the percent by mass of benzene in a solution containing 14.2 g of benzene in 28.0 g of
carbon tetrachloride

Answers

Answer:

33.65%

Explanation:

total weight of solution=14.2+28=42.2g

benzene=14.2/42.2*100=33.65%

Chemistry question please help

Answers

Answer:

a) the tendency to form hard, brittle crystals.

Explanation:

Metallic bonding occurs between metals; metals are excellent conductors of electricity, are malleable (can be hammered into thin sheets) and have luster (are shiny). Brittleness is indicative of an ionic bond or ionic compound.

I’ll really appreciate it if you help me out on this one .

Answers

Answer:

3) All the animals and plants in a desert

4) Species becoming extinct

CH4 and CO₂ are the chemical formulas for:

Answers

Answer:

CH4 = Methane

CO2 = Carbon dioxide

Hope this Helps!!Hope this Helps!!:)

There are two types of chemical compound one is covalent compound and another is ionic compound in chemistry. In ionic bonds, electrons are completely transferred. Therefore, the name of CH[tex]_4[/tex]  and CO[tex]_2[/tex]  are Methane and Carbon dioxide respectively.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Covalent compounds are formed by covalent bond and ionic compounds are formed by ionic bond. Covalent bond is formed by sharing of electron and ionic bond are formed by complete transfer of electron. Ionic bonds are stronger than covalent bonds. The melting and boiling points are higher in ionic compounds.

chemical formula                                      Chemical name

CH[tex]_4[/tex]                                                           Methane

CO[tex]_2[/tex]                                                      Carbon dioxide

Therefore, the name of CH[tex]_4[/tex]  and CO[tex]_2[/tex]  are Methane and  Carbon dioxide respectively.

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If each image represents one mole of the substance pictured, which contains the greatest
amount of substance?
A)molecules
B) atoms
C)formula units
D)none; all amounts are the same

Answers

I think it’s B) Molecules
I searched it up

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, all amounts are the same. The correct option is option D.

What is mole?

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample. There are so many formula for calculating mole. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

Calculating the amount of a chemical in grams from moles is among the most often chemistry computations. You will employ the mole ratio of reactants to reagents when balancing equations.

Therefore, all amounts are the same. The correct option is option D.

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When 10 grams of water completely evaporate into water vapor, the volume of the water vapor is greater than the volume of the original liquid water, but the mass remains the same. Why does the mass stay the same? Which answer is correct?

A
The temperature of the liquid water and water vapor is the same.

The temperature of the liquid water and water vapor is the same.

B
The density of the liquid water is the same as the density of the water vapor.

The density of the liquid water is the same as the density of the water vapor.

C
The number of atoms in the water vapor is equal to the number of atoms in the liquid water.

The number of atoms in the water vapor is equal to the number of atoms in the liquid water.

D
The distance between the water molecules is the same in the liquid and the vapor.

The distance between the water molecules is the same in the liquid and the vapor.

Answers

Answer: I think the answer is B or C, its kind of hard.

As the number of atoms in the water vapor is equal to the number of atoms in the liquid water. Therefore, the mass of the water remains the same.

What is evaporation?

Evaporation is a process that usually happens on the surface of water or liquid and it involves the conversion of the liquid phase into the gaseous phase. This process involves a change in the state of matter of water or liquids.

When the water is completely evaporated into water vapor the density of the water vapor is less than the density of the liquid water as the vapors occupy a large volume in comparison to liquid water.

But the number of atoms in the water vapor is the same as the number of atoms in the liquid water. The mass of the water is due to the mass of the atoms.

Therefore, the mass of the water remains the same during the phase transition from liquid water to water vapors. Therefore, option (C) is correct.

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What measures are being taken to minimize the threat of green iguana?


Answers

Answer:

use wire nettings

Explanation:

and cages

PLSSS HELP ANYONE ASAP!

Answers

B I hope it’s right I don’t really help a lot but yeah lol

Please help me find the final answer

Answers

Answer:

5. The mass of Na₂CO₃, that will produce 5 g of CO₂ is approximately 12.04 grams of Na₂CO₃

6. The mass of nitrogen gas (N₂) that will react completely with 150 g of hydrogen (H₂) in the production of NH₃ is 693.[tex]\overline{3168}[/tex] grams of N₂

Explanation:

5. The given equation for the formation of carbon dioxide (CO₂) from sodium bicarbonate (Na₂CO₃)  is presented as follows;

(Na₂CO₃) + 2HCl → 2NaCl + CO₂ + H₂O

One mole (105.99 g) of Na₂CO₃ produces 1 mole (44.01 g) of CO₂

The mass, 'x' g of Na₂CO₃, that will produce 5 g of CO₂ is given by the law of definite proportions as follows;

[tex]\dfrac{x \ g}{105.99 \ g} = \dfrac{5 \ g}{44.01 \ g}[/tex]

[tex]\therefore {x \ g} = \dfrac{5 \ g}{44.01 \ g} \times 105.99 \ g \approx 12.04 \ g[/tex]

The mass of Na₂CO₃, that will produce 5 g of CO₂, x ≈ 12.04 g

6. The chemical equation for the reaction is presented as follows;

N₂ + 3H₂ → 2NH₃

Therefore, one mole (28.01 g) of nitrogen gas, (N₂), reacts with three moles (3 × 2.02 g) of hydrogen gas (H₂) to produce 2 moles of ammonia (NH₃)

The mass 'x' grams of nitrogen gas (N₂) that will react completely with150 g of hydrogen (H₂) in the production of NH₃ is given as follows;

[tex]\dfrac{x \ g}{28 .01 \ g} = \dfrac{150 \ g}{3 \times 2.02 \ g} = \dfrac{150 \ g}{6.06 \ g}[/tex]

[tex]\therefore \ x \ g= \dfrac{150 \ g}{6.06 \ g} \times 28.01 \ g = 693.\overline {3168} \ g[/tex]

The mass of nitrogen gas (N₂) that will react completely with 150 g of hydrogen (H₂) in the production of NH₃, x = 693.[tex]\overline{3168}[/tex] grams

Why do some animals defend their territory after they have mated
and reproduced?


a.They can gain more food for their offspring

b.they can provide a larger nest for their offspring.

c.They are naturally aggressive.

d.They are carrying out a mating dance.​

Answers

Answer:

i believe it is a

Explanation:

The reason is :a.They can gain more food for their offspring

Animals tend to protect their territory because they don't want  intruders to invade their territory.

Animals majorly protect their territory in order to protect their foods from been eating by intruders as this will enables their offerings to have enough foods to eat.

They as well guard  their territory in order to prevent intruders from invading the place they have prepare as their mating place.

Inconclusion  The reason why some animals defend  their territory after they have mated

and reproduced is :a.They can gain more food for their offspring

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What do we know about the arrangement of atoms during a chemical reaction?

Answers

Answer: In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Explanation:

Answer: In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Explanation: Hope this helped! :)

Calculate the number of moles in 3.440 x 10^35 formula units of RbF. (Molar mass of RbF is 104.47g/mol).

Answers

3.293 moles of RbF ! Divide 3.440 X 10^35 by 104.47

How many moles of O are in 12.6 mol Fe(NO3)3?
The answer is 113.4, rounded is 113
Explanation: Just multiply 12.6 mol Fe(NO3)3 by 9 ( 9 is the number of O atoms in the equation)

Answers

Answer: There are 113 moles of O in 12.6 moles of [tex]Fe(NO_3)_3[/tex]

Explanation:

Given : moles of [tex]Fe(NO_3)_3[/tex] = 113.4

To find : moles of O = ?

1 mole of [tex]Fe(NO_3)_3[/tex] contains = 9 moles of O atoms

Thus 12.6 mole of [tex]Fe(NO_3)_3[/tex] contains = [tex]\frac{9}{1}\times 12.6=113.4[/tex] moles of O atoms

Thus there are 113 moles of O in 12.6 moles of [tex]Fe(NO_3)_3[/tex]

how many formula units of lead (IV) phosphate in 1.75g

Answers

1.05 x 10 to the 21 power formula units of lead (IV) phosphate

A mixture of large, dispersed particles.

Answers

Answer:

Colloids are mixtures in which one or more substances are dispersed as relatively large solid particles or liquid droplets throughout a solid, liquid, or gaseous medium.

Answer:

Colloids are mixtures in which one or more substances are dispersed as relatively large solid particles or liquid droplets throughout a solid, liquid, or gaseous medium.

Explanation:

I got the answer first

In 1774, Joseph Priestly discovered oxygen gas by heating mercury(II) oxide powder with focused sunlight through a lens. How many grams of HgO (216.59 g/mol) would be decomposed to produce 1.50 mol O2 ? A. 650. g HgO B. 325gHgO C. 162gHgO D. 3.00 g HgO

Answers

Answer:

A. 650 g

Explanation:

The equation of the reaction is given as;

2 HgO(s) --> 2Hg(s)  + O2(l)

From the reaction;

2 mol of HgO produces 1 mol of O2

x mol of HgO would produce 1.50 mol of O2

2 = 1

x = 1.5

Solving for x;

x = 1.5 * 2 / 1 = 3 mol

Converting to mass;

Mass = Number of moles * Molar mass

Mass = 3 mol  * 216.59 g/mol

Mass = 649.77 g ≈ 650. g

Correct option is ;

A. 650 g

a student is trying to classify an unidentified, solid gray material as a metal or a non metal. which question will best help the student classify the material?

F. Is the material malleable or ductile?
G. Does the material feel hard to the touch?
H. Will the material float in water?
J. Does the material feel rough or smooth?

Answers

Answer:

i think the answer is f as metals are malleable and ductile

Answer:

F

Explanation: Most metals carry the trait that they are malleable and ductile.


1. Plants that perform photosynthesis convert sun (solar) energy to
food energy.

Answers

Answer:

true

Explanation:

one reason is because plants need sunlight and water because it is their source of food

what the steps of Cellular Respiration in the correct order?

Answers

Answer:

Cellular respiration uses energy in glucose to make ATP. Aerobic (''oxygen-using”) respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. In glycolysis, glucose is split into two molecules of pyruvate. This results in a net gain of two ATP molecules.

What are two methods used to help identify the species of insect from the eggs on
human remains? Describe the methods.

Answers

Answer:

The two different methods to help identify the species of insects from the eggs on human remains are by using a small paint brush dipped in water and the other way is by using forceps.

Explanation:

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The insects have been defined as the most successful arthropods. There are far more species in the class Insecta than in any other group of animals. The insects are the only invertebrates with wings.

What are insects?

The insects play a very important role in the web of the life in every environment. Their jobs include pollinating flowering plants, since it is the source of food for insectivorous animals and it assist in the decomposition of plants and animals.

The two different methods which help to identify the species of the insects from the eggs on human remains are by using a small paint brush dipped in water and the other way is by using the forceps.

The study of insects and their life cycle are found to be important for the forensic entomologist. This is because it could set a timeline on when the crime is happened. The life cycle of a blowfly starts as an egg and then goes to be maggots.

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DESPERATE WILL GIVE BRAINLIST AND THAKS
Which phrase describes how vestigial structures provide evidence that suggests a common ancestor and supports that life changes over time?

Question 3 options:

some animals exhibit similar structures, possibly due to a common ancestor


some animals exhibit similar stages of embryonic development


some animals exhibit structures that are no longer used for any purpose


some fossils exhibit similar biological proteins

Answers

Answer:

some animals exhibit structures that are no longer used for any purpose

Explanation:

Vestigial structures are defined as the the organs which are no longer used for any purpose.

Vestigial structures provide evidences of common ancestors as they shows how organisms changed or evolved in the use of these structures. for example: human appendix which is no longer functional in human body but as per Darwin's theory of evolution it was once used by our herbivorous ancestors to protect good bacteria in the gut.

Hence, the correct answer is "some animals exhibit structures that are no longer used for any purpose".

how much heat is needed to warm 250g of water from 22°C to 98°C ?​

Answers

Answer:

79'420J

Explanation:

We know mass 250g and

∆T=98°C -22°C

=76°C

The specific heat capacity for water is 4,18Zj/g°C

THEREFORE

H=250g14,8j/C 76°C

=79'420J

HELP!!
need correct answer..

Directions: Write True if the statement is correct and False if the
statement is incorrect.

21. An ecosystem is where both biotic factor such as
plants, animals and other organisms and abiotic factor like weather
(temperature and humidity) and landscape (rocks, soil, etc.) work
together.
22. Intertidal zone are areas where salt water and fresh
water meets (brackish water).
23. Water in estuaries is less salty.
24. Organisms does not require energy to perform life
activities.
25. Intertidal zones are area where the presence of water
depends on the tides.
26. Producer are organisms that produce food from
sunlight and inorganic substances.
27. Food chain is a series of transfer of energy as the
algae can be eaten by small fish and small fish may be eaten by a
carnivorous fish.
28. Decomposers are organisms that eat food scraps and
left-overs.
29. Consumers are organisms that eat other organisms.
30. A food web is composed of different food chains.

Answer my question pls!!

spam/unhelpful/incorrect/not sure = REPORT!! ​

Answers

Answer:

21: True

22: False

23: True

24: False

25: False

26: True

27: True

28: False

30: True

Explanation: Hope this is helpful :)

SOMEBODY PLEASE HELP ME
Scenario
On Halloween, children prepared to go trick-or-treating with glow sticks. They prepared two glow sticks (“Glow Stick In” and “Glow Stick Out”) following the directions below. The light intensity was given a value of 10 for both Glow Stick In and Glow Stick Out. At 6:00, the children left Glow Stick In inside of the 25oC house and took Glow Stick Out outside in 10oC weather. At 8:00, they noticed the light intensity of Glow Stick Out at 10oC had decreased to 5. They immediately returned home and noticed the light intensity of Glow Stick In at 25oC had decreased to 7. At 9:00, both glow sticks were at 25oC. Glow Stick In had a light intensity of 6, and Glow Stick Out had a light intensity of 8.

Using at least two scientific principles, write a scientific explanation that includes evidence that justifies or describes the change in light intensity of both glow sticks. Please use claim evidence reasoning.

Answers

Answer:

look out for a bot with a link he will get yo ip

Explanation:

Answer: It will become solid again and the form of it will change, because when you heat up something you add energy to it. The particles move further and further apart.  

Explanation:

What is the missing word. Please Help Me. Thank you!!
Before adding to the cell, aluminium oxide is mixed with _____________ to lower its melting point.

Answers

Calcium Floride (Caf2)
Hope this helped =D
mixed with CRYOLITE to lower its melting point
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describe how the Quran was revealed to holy prophet between 610-632 AD? 10, She heard the dog howl.leyeroncayeronoycaydestruyconstruyoyeronconstruyeronleydestruyeron Seawater is a good source of magnesium. Magnesium is dissolved in the seawater as Mg. SUGGEST a substance that could be used to precipitate magnesium out of the water. Write a BALANCED CHEMICAL EQUATION and IDENTIFY THE REACTION TYPE to support your thinking Which statement best explains the increase in sectionalism between 1820 and 1850?A. Westward expansion created a heated debate over the nation's policy concerning American IndiansB. Westward expansion during the period occurred faster across the northern plains that the southern wer deltasC. Westward expansion caused a recurring debate over the expansion of slavery into the new territoriesD. Westward expansion created a need for government spending to improve transportation If 3.22 g of precipitate are recovered from the reaction of limewater (Ca(OH),) with carbon dioxide to producewater and calcium carbonate, what is the percent yield if 20.0 g of carbon dioxide was mixed with thelimewater?the correct answer is 7.1% but i don't understand what they did You have available three blocks of different material, at various temperatures. They are, respectively, a 2 kg block of iron at 600 K, a 3 kg block of copper at 800 K and a 10 kg block of granite at 300 K. The heat capacities for the three materials are 0.460 (iron), 0.385 (copper), and 0.790 (granite), in kj/(kg*K), all independent of temperature. For solids, the heat capacities at constant pressure and constant volume can be assumed to be equal, Cp=Cv. what is the minimum temperature that could be obtained in any one of the block? what is the maximum temperature that could be obtained? no heat or work interactions with the enviroment are allowed. 3/2 inches snow fell in 3/4 of an hour which two statements are true Here is your goal for this assignment:Apply your knowledge of the elements of autobiographical writing in your own composition1. Write a few sentences explaining what you feel is the theme of Admiral Byrd's autobiography.2. Then write a short autobiography of your own about an important event in your life. After traveling through the pulmonary artery and lungs, oxygenated blood now returnsto the heart and into theA. left atriumB.left ventricleC.right atriumD.right ventricle classify and degree 2x+7 There are 12 counters. One third of the counters are yellow. How many counters are yellow? Rewrite the number in standard notation.1 times 10^8 power You are at a restaurant. You are ordering a drink. You can choose small or large. Then you can choose between sprite, diet coke, coke, and dr pepper. How many choices or combinations do you have in total? How did you get that answer? What if now you had to choose lid or no lid? And straw or no straw? How many in total? Which best describes the different points of view of these two passages?The first passage is written from a third-person pointA) of view, while the second passage is written in first-person point of view.The first passage is written from a first-person pointB) of view, while the second passage is written in third-person point of view.The first passage is written from a first-person pointC) of view, while the second passage is written in asecond-person point of view.The first passage is written from a second-personD) point of view, while the second passage is writtenfrom a first-person point of view. how are below 0, -10 and -20 related?It's an emergency! PLEASE HELP Last year, a small nation with abundant forests cut down $200 worth of trees. $100 worth of trees was then turned into $150 worth of lumber. $100 worth of that lumber was used to produce $250 worth of bookshelves. Assuming the country produces no other outputs, and there are no other inputs used in the production of trees, lumber, and bookshelves, what is this nation's GDP En Latinoamrica el ftbol tiene muchos aficionados. Es muy popular.O TrueO False hottest centralisation Suppose a car gas tank holds 21 gallons of gas. On a trip it uses 2/3 of a tank of gas on a trip. Then it uses 1/3 of what is left in the tank. How many gallons of gas are left in the tank? If u can could u show the work? Chau and Yoko each opened a savings account today. Chau opened his account with a starting amount of $460, and he is going to put in $60 per month. Yoko opened her account with a starting amount of $530, and she is going to put in $50 per month.Let x be the number of months after today.(a) For each account, write an expression for the amount of money in the account after x months.Amount of money in Chau's account (In dollars) =Amount of money in Yoko's account (in dollars) = (b) Write an equation to show when the two accounts would have the same amount of money.