In the compound AbO3, the ratio of aluminum to
oxygen is
A) 3 moles of aluminum to 2 moles of oxygen
B) 2 moles of aluminum to 3 moles of oxygen
C) 2 grams of aluminum to 3 grams of oxygen
D) 3 grams of aluminum to 2 grams of oxygen

Answers

Answer 1

Answer:

c

Explanation:i got it right ony my test


Related Questions

Which of the following is a correct statement?
1 :Vacuum is an opaque body
2 :Reflection takes place from the polished smooth surfaces
3 :Moon is a luminous body in the sky
4 :A pin hole camera can take pictures on moving objects
5 :Shadows are always inverted

Answers

Answer:

Reflection takes place from the polished smooth surfaces

Explanation:

A vacuum does not refer to an opaque body. An opaque body does not allow light to pass through it while a vacuum is simply empty space without air.

A smooth polished surface often acts as a mirror, it is a good reflector of light.

The moon is a non luminous body in the sky. It merely reflects the light from the sun.

A Pinhole camera can not take pictures of moving objects because it only focuses on any image placed before it.

Shadows are not inverted, the always appear upright.

PLEASE HELP ASAP NO LINKS PLEASE
What is the force that keeps the planets in perfect orbit around the sun?
A) Velocity
B) Gravity
C) Centrifugal Force
D) Magnetism

Answers

Answer:

gravity

Explanation:

Gravity is the force that pulls us to the surface of the Earth, keeps the planets in orbit around the Sun and causes the formation of planets, stars and galaxies.

Hope this helped!!!

help pls pls pls I really need this answer

Answers

Answer:

I never did this but i think its d 37.5٪ lmk if i got it right pls and srry if i didnt

0.45g sample of mineral ore is analyzed for chromium and found contain 0.560mg Cr2 O3. Express concentration of Cr2O3 in sample as percent

Answers

Answer:

0.124% of Cr2O3 in the sample

Explanation:

A mass percent is expressed as 100 times the ratio of the mass of analyte and the mass of the sample. For this problem, the equation is:

Mass Cr2O3(g) / Mass Mineral(g) * 100

To solve this question we must convert the mass of Cr2O3 to grams and then, compute the value in the equation:

Mass Cr2O3 in g:

0.560mg * (1g / 1000mg) = 5.6x10⁻⁴g Cr2O3

Percent of Cr2O3 is:

5.6x10⁻⁴g Cr2O3 / 0.45g * 100

0.124% of Cr2O3 in the sample

What is the maximum amount in moles of P2O5 that can theoretically be made from 240 g of O2 and excess phosphorus?

Answers

Answer:

hope it will help you out :)

How is the motion of particles in a book different from the motion of particles in the air around it ? (dont put link)​

Answers

Answer:

the motion is different.

Explanation:

the the motion is different because the particle in a book is solid particles and solid are packed together so so they can't move freely but while the the particles in the air around it is gas particles and it are packed very loose and can move very easily anywhere like .Example - solid-book , eraser. gas-helium, oxygen.

PLEASE HELP ASAP In the past, California has had many droughts. Which part of the water cycle is not active when a drought is occurring?
precipitation

condensation

transpiration

evaporation
?

Answers

Answer :D: evaporation

Explanation: cus i am smart

sorry if i am wrong heh



True or False: Strong HYDROGEN bonds cause surface tension.
Choose

True or False: Many polar substances are soluble in water.

True or False: Cohesion and adhesion contribute positively to the capillary action property of water.

True or False: Water's molecular shape is trigonal planar.

True or False: Most water on earth is found in the liquid form.

True or False: Surface Tension makes it possible for some insects to walk
on water.

True or False: Capillary action is how tall trees get water from the leaves TO the roots.

True or False: Water has the density of 1.0 g/mL.

True or False: Water does not change temperature easily."

True or False: Water is highly polar.

True or False: Adding soap to water increases surface tension.

True or False: Evaporation and Vaporization are the same thing."

True or False: Nonpolar substances are NEVER soluble in water."

True or False: Water is an example of an strong IONIC bond..

True or False: The solid phase of water (ice) is more dense than the liquid
phase of water.

Answers

True TrueTrueFalseFalseTrueTrueTrue FalseFalse TrueFalseFalse

What are the 3 main types of clouds?

Answers

Answer:

Cumulus, Cirrus, and Stratus

Explanation:

So Cumulus Clouds are those puffy-shaped clouds, the ones that look the most solid like you could just walk on them.  Cirrus are those wispy clouds that are often very high up.  And Stratus Clouds are the low clouds that often cover the entire sky.

hope this helps:)

The track along which electricity flows is called a:

fuse
circuit
switch

Answers

It is called a circuit.

In the context of this graph, what do the slope and y-intercept mean?

Answers

Answer: The slope and y-intercept values indicate characteristics of the relationship between the two variables x and y. The slope indicates the rate of change in y per unit change in x. The y-intercept indicates the y-value when the x-value is 0.

Which applies to fusion? Check all that apply.
involves the splitting of nuclei
takes place in the Sun
releases radiation as a waste product
occurs in nuclear power plants and is used to generate electricity
plays a role in the production of essentially all elements heavier than helium
releases large amounts of energy

Answers

Answer: B, E, and F

Explanation: It showed the correct answer after i got it incorrect. (E2021)

Answer:

A

B

D

E

Explanation:

GOT IT RIGHT ON MY ASSIGNMENT

HOW WILL GENETIC MODIFICATION AFFECT OUR SOCIETY AND ENVIRONMENT?

Answers

Answer:

“GMOs have helped farmers reduce their environmental footprint by allowing them to use fewer inputs and enabling a shift to reduced tillage. These practices have led to less time spent on a tractor, less fuel used and fewer emissions.

Hope this helps!!!

What is required to make a fire? Is it exothermic or endothermic?

Answers

Answer:

Combustion as an Exothermic Reaction

Explanation:

When substances burn, they usually give off energy as heat and light. The combustion of wood is an exothermic reaction that releases a lot of energy as heat and light.

Answer:

Exothermic

Explanation:

because exothermic causes fires while endothermic doesn't

1. Molarity of 2.6 moles of NaCl in 2.4 L solution of HOH
2. What is the molarity of a 514 mL solution with 0.46 mol of HSO4
3. What is the molarity of a 1000 mL solution with 12.5 mol of NaOH
4. What is the molarity of a solution of 32.5 grams of KCl in 3.5 L of HOH.
5. What is the molarity of a solution with 84.2 g of CuSO4 in 21,612.2 mL of HOH
6. Molarity of 2.2 g of HCl in 61.2 mL of HOH
7. What is the molarity of 241.8 g Fe2O3 in 500 mL of HOH.
All answers need to be rounded to the nearest 0.01

Answers

Answer:

Explanation:

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Please help me with this!

Answers

Answer:

3.01x10^23

Explanation:

In order to determine the amount of molecules, you have to use Avogadro's number which = 6.02x10^23. To calculate this, multiply the number of moles with Avogadro's number to get the above answer.

Hope this helps!

Which measurable property of potassium can be used to support this statement: "Matter can be subdivided to the atomic level while retaining its defining characteristics."

A. Temperature
B. Density
C. Mass
D. Volume

Answers

C i think is the correct answer

Which shape of eyeglass lens should be placed in front of the eye in order for the image to form on the retina?

A
concave
B
convex
C
flat
D
objective

Answers

Answer:

B

convex: for long sightedness

Or

A

concave: for short sightedness

The concave shape of the eyeglass lens should be placed in front of the eye in order for the image to form on the retina. Therefore, option A is correct.

What is retina ?

The retina is a layer of photoreceptor cells and glial cells within the eye that captures incoming photons and transmits them as both electrical and chemical signals to the brain, allowing the brain to perceive a visual image.

The retina converts light that enters your eye into electrical signals that your optic nerve transmits to your brain, resulting in the images you see. It's an important part of your vision. The retina is the layer at the back of your eye.

Placing concave lenses in front of a nearsighted eye reduces light refraction and increases focal length, allowing the image to form on the retina.

A concave lens, which diverges light rays before they enter the eye, allows the myopic eye to focus the image of a distant object on the retina.

Thus, option A is correct.

To learn more about the retina, follow the link;

https://brainly.com/question/13993307

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5-O selênio e o enxofre pertencem à família VI A da tabela periódica. Sendo assim, o seleneto e o

sulfeto de hidrogênio são representados, respectivamente pelas fórmulas:

a) HSe e HS

b) H 2 Se e HS

c) HSe e H 2 S

d) H 2 Se e H 2 S

e) H 3 Se e H 3 S

Answers

Answer:

Opção D está correta

Explanation:

Conforme indicado no parágrafo -

o selênio e o enxofre pertencem à família VI A da tabela periódica

Seleneto de hidrogênio  - H2Se

Sulfato de hidrogênio - H2S

Portanto, a opção D está correta

which elements are out of order in terms of atomic mass. co,Ni or Li,be or I,xe​

Answers

Answer:

The pair co,Ni is out of order in terms of atomic mass

Explanation:

For co,Ni

Atomic mass of Co = 58.9331 u

Atomic mass of Ni = 58.6934

For Li,be

Atomic mass of Li = 6.941 u

Atomic mass of  be = 9.012182 u

For I,xe

Atomic mass of I =  126.90447 u

Atomic mass of Xe = 131.293 u

Hence, the pair co,Ni is out of order in terms of atomic mass

Pb(NO3)2(aq)+2KCI(aq)------- PbCl2(s)+2KNO2 (aq). how many grams of PbCl2 solution will react with a 0.46L of a 0.101m KCI solution​

Answers

Answer:

6.46g of PbCl2 are produced

Explanation:

The PbCl2 will not react, is a product of the reaction. The question must be say how many grams of PbCl2 will be produced

Based on the chemical reaction:

Pb(NO3)2(aq)+2KCI(aq) → PbCl2(s)+2KNO2 (aq)

1 mole of PbCl2 is produced when 2 moles of KCl are reacting.

To solve this question we must find the moles of KCl that will react. With these moles we can find the moles of PbCl2 and the grams produced using its molar mass:

Moles KCl:

0.46L * (0.101moles / L) = 0.04646 moles KCl

Moles PbCl2:

0.04646 moles KCl * (1mol PbCl2 / 2mol KCl) =

0.02323 moles of PbCl2 are produced

Mass -Molar mass PbCl2: 278.106g/mol-

0.02323 moles * (278.106g / mol) =

6.46g of PbCl2 are produced

hi so can help me with something

Help fast !

If I have an unknown quantity of gas at a pressure of 102 kPa, a volume of 31 liters, and a temperature of 87 0C, how many moles of gas do I have?

Answers

Answer:

1 mole represents 6.023×1023 particles.

1 mole of iodine atom= 6.023×1023

Given 127.0g of iodine.

no. of iodine atom = 1 mole of iodine

1mole of magnesium = 24g of Mg = 6.023×1023no.of Mg

Given 48g of Mg = 2×6.023×1023

no. of Mg = 2 moles of Mg

1 mole of chlorine atom= 6.023× 1023

no. of chlorine atom = 35.5g of chlorine atom

Given 71g of chlorine atom=2× 6.023× 1023

no. of chlorine atom = 6.023×1023

2 moles of chlorine atom.

Given that 4g of hydrogen atom.

will be equal to 4 × 6.023 × 1023

no. of atoms of hydrogen= 4 moles of hydrogen atom.

______________Helps the earth continue to go around the sun

Gravity
Entropy
Magnetism
Inertia
Friction

Answers

Inertia is your answer

How many liters of O2 would be needed to produce 5.75 moles of K₂O?​

Answers

Answer:

just 1

Explanation:

Explain whether each of the possible reactions listed below will occur. For those that will, predict what the products will be.
Zn(s) + H₂O (l) →
Sn(s) + O2(g) →
Cd(s) + Pb(NO3)2 (aq) →
Cu (s) + HCl(aq) →

Answers

Answer:

Zn(s) + 2H₂O (l) → Zn(OH)2(aq) + H2(g)

Sn(s) + O2(g) →SnO2(s)

Cd(s) + Pb(NO3)2 (aq) →Cd(NO3)2 (aq) + Pb(s)

Cu (s) + HCl(aq) → can not occur

Explanation:

Metals reacts with liquid water to yield the corresponding metallic hydroxide and hydrogen gas as shown above; Zn(s) + 2H₂O (l) → Zn(OH)2(aq) + H2(g)

Tin reacts with oxygen to yield tin (IV) oxide. This is an oxidation reaction as shown; Sn(s) + O2(g) →SnO2(s)

The reaction between Cd and Pb(NO3)2 is a single replacement reaction. It is possible because Cd is above Pb in the electrochemical series. Hence the reaction occurs thus; Cd(s) + Pb(NO3)2 (aq) →Cd(NO3)2 (aq) + Pb(s)

Copper does not displace hydrogen from dilute acids (such as HCl) since copper is lower than hydrogen in the electrochemical series hence the reaction does  not occur.

Neon in a piston is compressed to a volume of 14L its original volume was 22 L at 11.2 atm find the new pressure in atm

Answers

I love chem!!! Hopefully I got it right for u I got


In the calculator: 7.127272727

But if u need it in sig figs: 7.1atm

How does increasing the temperature of a system affect the rate of chemical
reactions?

Answers

Answer:

Increasing the temperature of a system will increase the rate of a reaction. More particles are moving faster, and have more energy, increasing the overall rate of reaction.

Explanation:

I hope this helps :)

In a nuclear power plant, what is the purpose of the cooling tower?

cools down the electric generator
reduces heat pollution to the environment
pumps cool water into the reactor

Answers

Answer:

reduces heat pollution to the environment

Read the excerpt from A History of Women’s Suffrage by Stanton, Anthony, and Gage.

Another writer asserts that the tyranny of man over woman has its roots, after all, in his nobler feelings; his love, his chivalry, and his desire to protect woman in the barbarous periods of pillage, lust, and war. But wherever the roots may be traced, the results at this hour are equally disastrous to woman. Her best interests and happiness do not seem to have been consulted in the arrangements made for her protection. She has been bought and sold, caressed and crucified at the will and pleasure of her master. But if a chivalrous desire to protect woman has always been the mainspring of man's dominion over her, it should have prompted him to place in her hands the same weapons of defense he has found to be most effective against wrong and oppression.

Which statement paraphrases the authors’ argument?

Throughout history, men have strived to protect women through chivalrous action and guardianship.
Women have always been subservient to men because they have needed protection during war and pillage.
Men have not been successful protecting women because they have not given women the power to protect themselves.
During times of war, men and women rely on one another for defense, and they each have weapons for battle.

Answers

Answer:

C

Explanation:

Took the test

In her book A Vindication of the Rights of Women, British author Mary Wollstonecraft advocated that women should be treated with the same respect and decency as men, particularly when it comes to education. Thus, option C is correct.

What Women’s Suffrage by Stanton, Anthony, and Gage?

A Vindication of the Rights of Woman (1792), a groundbreaking feminist text, asserts that girls should be given the same privileges as males.

So that they might become outstanding husbands, mothers, and laborers in addition to being educated to be frivolous and inept by the educational system.

Women should be given the same opportunities as men, and women share the same capacity for reasoning at birth. Women should have the same rights to influence, expertise, and power in society as men do.

Therefore, Men have failed in their attempts to safeguard women because they have not given them the means to do so.

Learn more about Women’s here:

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2C4H10+13O2-->8CO2+10H2O Using the predicted and balanced equation, How many Liters of CO2 can be produced from 150 grams of C4H10?

Answers

Answer:  233 L of [tex]CO_2[/tex] will be produced from 150 grams of  [tex]C_4H_{10}[/tex]

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]  [tex]\text{Moles of} C_4H_{10}=\frac{150g}{58g/mol}=2.59moles[/tex]

The balanced chemical equation is:

[tex]2C_4H_{10}+13O_2(g)\rightarrow 8CO_2+10H_2O[/tex]  

According to stoichiometry :

2 moles of [tex]C_4H_{10}[/tex] produce =  8 moles of [tex]CO_2[/tex]

Thus 2.59 moles of [tex]C_4H_{10}[/tex] will produce=[tex]\frac{8}{2}\times 2.59=10.4moles[/tex]  of [tex]CO_2[/tex]  

Volume of [tex]CO_2=moles\times {\text {Molar volume}}=10.4moles\times 22.4mol/L=233L[/tex]

Thus 233 L of [tex]CO_2[/tex] will be produced from 150 grams of  [tex]C_4H_{10}[/tex]

Other Questions
look at the figure. ill give you brainlest!!! "The crying crocodile crawled on the ground" is an example of what literary device? help plz very hard plz HELP ELPHELP ELPHELP ELPHELP ELPHELP ELPHELP ELPHELP ELPHELP ELPHELP ELPHELP ELPHELP ELPWhich of the following statements best characterizes how developed and developing countries impact the environment? A. Neither developed nor developing countries have had a significant impact on the environment in the past century. B. Developed countries have tended to improve the environment, while developing countries have tended to damage it. C. Developed countries have damaged the environment, while developing countries have had little impact. D. Both developed and developing countries have had significant negative impacts on the environment. Please select the best answer from the choices provided. A B C D 3. Suppose you are thinking of purchasing the Moore Co.s common stock today. If you expect Moore to pay $3.1, $3.38, $3.70, $4.02, and $4.38 dividends at the end of year one, two, three, four, and five respectively and you believe that you can sell the stock for $95 at the end of year five. If you required return on this investment is 11%, how much will you be willing to pay for the stock today? HELP ME OUT PLZZZ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!! What substances will dissolve in water?nonpolarpolar Which group, within the governments of most European nations, supported the rights of citizens? The pulmonary arteries carry____blood (A)oxygen-poor (B)oxygen-rich (C)carbon-dioxide-free(D)carbon-dioxide-richSomeone plz help Compare the differences in evaporation and precipitation over Earth's oceans and land. How arethey related? Write the following phrase as an algebraic expression use b for the unknown. A number more than 6 How do I k1II myseIf painIessly? Please dont try to make me feel better, ive heard a lot of phrases, it does not help. I want to get out of here, out of this worId. 7 more than the quotient of a number is 2 and 9 Marina will attend choir practice for 2-hours on Saturday, 24 hours on Sunday,and 3 hours on Monday. Next week,Marina will attend choir practice for thesame number of hours on Saturday,Sunday, and Monday.What is the total number of hoursMarina will have choir practice overthese 6 days? Ms.sosa's principal gave her $350 to spend on school supplies at the beginning of the year she bought 10 packs of dry erase marker for 9.98 each and 15 pre sharpened pencil that cost 12.99 each how much does she have left to spend Which of the following is often used in an uninformed opinion?emotionally charged wordsnon-emotionally charged wordsvalid factsexamples An object is in motion if ___ Find the 13th term of the arithmetic sequence 2x + 8, 4x + 2, 10x 4, ...The other answer I found for this was wrong pls help !! He was not a meritorious boy.(into simple present tens) Dinosaurs evolved over millions of years and became well-suited to theirenvironment. Unfortunately, dinosaurs did not have the ability to adapt to theclimatic change that occurred sixty-five million years ago due to the asteroidcollision. Which statement best describes why the dinosaurs were unable to survivethis event?