Can you please check my answer?​

Can You Please Check My Answer?

Answers

Answer 1

Answer:

!!!!!!!!!!!!!!!!!

Explanation:

!!!!!!!!!!!!!!


Related Questions

What neutral element has 17 electrons an 18 neutrons?

Answers

Answer:

chlorine atom

A chlorine atom has 17 protons, 18 neutrons, and 17 electrons.

Explanation:

Answer:

chlorine atom

Explanation:

A chlorine atom has 17 protons, 18 neutrons, and 17 electrons.

Theoretical yield of NaHCO3 = Na + H2O + CO + CO2

Answers

Answer:

C - 2 e- → C

Explanation:

2 NaHCO3 → 2 Na + H2O + -1 CO + 3 CO2

2 NaI + 2 e- → 2 Na0

C - 2e - C

How is thermal energy transferred by convection, conduction, and radiation?

Answers

Answer:

Radiation is responsible for most of the heat transferred into the room. Heat transfer also occurs through conduction into the room, but at a much slower rate. Heat transfer by convection also occurs through cold air entering the room around windows and hot air leaving the room by rising up the chimney.

When a fluid, such as air or a liquid, is heated and then travels away from the source, it carries the thermal energy along. This type of heat transfer is called convection. The fluid above a hot surface expands, becomes less dense, and rises. ... A space heater is a classic convection example.

write the relation between group number and electronic configration

Answers

Answer:

Explanation: the number of circles in the electronic configuration of an element is represented in the periodic table as the period number that element is situated in. the number of electrons in the outermost shell of an element is represented in the periodic table as the group number that element is situated in.

If you have 460 grams of H2o, how many molecules are present?

Answers

The answer is 1.537×10^25 molecules.

This question requires the use of avogadro’s number, which represents the number of formula units (could be atoms or molecules) in a mole. Avogadro’s number is 6.02214076×10^23 per mole. The first step is to determine how many moles of water is 460 grams of H2O. The molar mass of H2O is 18.02 grams per mole, and by dividing 460 grams of H2O by 18.02 grams per mole, you find that there’s are 25.53 moles of H2O present. We know from Avogadro’s number that there are 6.02214076×10^23 molecules per mole, so we multiply 25.53 by 6.02214076×10^23, which results in about 1.537×10^25 molecules.

chemical properties of Carbon iv oxide​

Answers

Explanation:

Carbon Dioxide is a colorless, odorless, incombustible gas resulting from the oxidation of carbon. Carbon dioxide appears as a colorless odorless gas at atmospheric temperatures and pressures. Heavier than air and may asphyxiate by the displacement of air.

does iron and lead oxide react vigorously

Answers

Answer:

Fe will displace On but no the reaction is not vigorous.

Which pair of diseases could both be treated effectively with antibiotics
A. athletes foot and flu
B. cholera and salmonella
C. flu and scurvy
D. malaria and rickets
Imma mark the correct answer brainliest​

Answers

Answer:

cholera and salmonella

Explanation:

i believe so

Athletes foot and antibiotics

what is the colour change when universal indicator is added to apple juice​

Answers

Answer:

red because its the flavor

Explanation:

It would turn yellow/yellow-green because apple juice is acidic. I don’t think it would turn red because apple juice is only moderately acidic, so not quite enough to be red.

Cell division resulting in two new nuclei having the same number of chromosomes as the
original nucleus is called

Answers

Cell division resulting in two new nuclei having the same number of chromosomes as the

original nucleus is called mitosis

What pressure is required to achieve a CO2 concentration of 0.0620 mol L−1 at 20∘C?

Answers

Considering the definition of ideal gas law,  a pressure of 1.5 atm is required to achieve a CO₂ concentration of 0.0620 mol L⁻¹ at 20°C.

An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P×V = n×R×T

So the pressure is calculated as:

[tex]P=\frac{n}{V}xRxT[/tex]

In this case, you know:

[tex]\frac{n}{V} = 0.0620 \frac{mol}{L}[/tex]R= 0.082 [tex]\frac{atmL}{molK}[/tex]T= 20 C= 293 K

Replacing:

P=0.0620 [tex]\frac{mol}{L}[/tex]× 0.082 [tex]\frac{atmL}{molK}[/tex]× 293 K

Solving:

P= 1.489612 atm≅ 1.5 atm

Finally, a pressure of 1.5 atm is required to achieve a CO₂ concentration of 0.0620 mol L⁻¹ at 20°C.

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Order the following phases of matter from the phase with the most space between the
atoms to the least space between the atoms.

Answers

Answer:

Gas>Liquid>Solid

Explanation:In a gas state, molecules are allowed to move freelyand  rarely collide into nearby particles. In a liquid state, the molecules are contained within the liquid and occasionally bump into each other. now in a solid state the atoms arrange themselves into a structure that the atoms sit very tightly next to each other, sometimes vibarating

Which two statements describe a mixture?
O A. It is a pure substance.
O B. It includes atoms of different elements.
O C. Its parts can be separated using physical means.
O D. It can result from chemical bonding.

Answers

Answer:

d

Explanation:

because the chemicals or substances mix together so it's basically like chemical bonding.

I pretty sure its B and C

Calculate the average atomic mass for the element beryllium, given this information about the
relative abundance of its 3 isotopes.
Be-8 = 0.2% Be-9 = 98.9% Be-10 = 0.9%. Please show all your work.

Answers

Answer:  9.007

Explanation:

Be-8  8 x   0.20%  = 0.016

Be-9 9 x 98.90% =     8.901

Be-10 10 x 0.90%  =        0.09

        100.00%       9.007

I'll be eternally grateful to whoever can help me!

Each of these Ionic Compounds are named INCORRECTLY.

1. Find and describe the mistake
2. Correctly name the compound.

CaCl2 - Calcium Chlorine

CuS - Copper Sulfide

Li3P - Trilithium Phosphide

CuBr - Copper(II) Bromide

NaOH - Sodium Hydrogen Oxide

Answers

Explanation:

The nomenclature of ionic compounds is given by:

1. Positive is written first.  And if the metal atom has various oxidation states then its oxidation state is to be mentioned in brackets with help of roman numbers

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

1.)  : Calcium chloride  (Correct)

In the given compound, calcium has oxidation state of +2 and chlorine has oxidation state of -1.The name is correct.

2.)  : Copper (II) oxide   (Incorrect)

In the given compound,copper has the oxidation state of +1 and oxygen has oxidation state of -2.So ,the correct name will be Copper (I) oxide.

3.)  : Lead (II) sulfide   (Incorrect)

In the given compound, lead has the oxidation state of +4 and sulfur has oxidation state of -2. So ,the correct name will be Lead (IV) sulfide.

PLZ HELP ASAP! Select 3 examples of pure substances Nitrogen gas, A cheeseburger, Ocean water, A glass of sweet tea, Oxygen​

Answers

Answer:

nitrogen gas, oxygen, and ocean water

Hope it helps!

Explanation:

Answer: Nitrogen Gas, Oxygen, Ocean water

Explanation:.yes


plz solve and send photo of anwer plz I need it fast​

Answers

Hope this helps.pls mark me as the brainliest

nono noonobbvyubojikkhbjhbjhb mj bk n

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ヾ( ̄▽ ̄) Hello :)
ヾ( ̄▽ ̄) Hello :)

complete and balance the equation pb3o4+hcl​

Answers

ur so ok.

Explanation:

i need points ok.

thanks

Pb3o4 + 8hcl = 3pbcl2 + 4h2o + cl2

Aeration basins increase the rate of bacteria working to break down the organic matter in wastewater. True or False?

Answers

Answer:

it is true

Explanation:

Aeration basins increase the rate of bacteria working to break down the organic matter in wastewater is true.

What is aeration basins?

Aeration basins is defined as the biomass consumes both oxygen and organic pollution, resulting in net microorganism growth and carbon dioxide release.

It can also be defined as the process of introducing air into wastewater in order to allow aerobic bio-degradation of pollutant components.

Aeration is frequently used to reduce the amount of carbon dioxide released by a treatment process.

It is the best methods for waste water treatment .

The main disadvantage of the aeration process is that too much oxygen is absorbed and the water becomes corrosive.

Thus, aeration basins increase the rate of bacteria working to break down the organic matter in wastewater is true.

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When solid sodium hydroxide is dissolved in water,the temperature of the soution formed rapidly increases. a) compare the total energy of the solid NaOH with that of the solution and state which is greater.​

Answers

Answer:  In a perfectly isolated system, the total energy is the same.

Explanation:  The conservation laws for mass and energy hold in a system that is isolated from its surroundings.  The enegy released by the dissolution of solid NaOH in water is absorbed by the water.  So the total energy of the syetm remains the same.  It is simply converted from lattice energy of the NaOH into heat energy as measured by the temperature of the water.  As long as it is operfectly isolated, the total energy remains the same.

Cual es la fórmula del anhidrido fosfórico ?

Answers

P₂O₅

English-

the formula to phosphoric anhydride is P₂O₅

Spanish-

la fórmula del anhídrido fosfórico es P₂O₅

Why is the nitrogen group considered a mixed group?

Answers

Explanation:

The nitrogen group is considered mixed because it is composed of elements of equally different classifications of metal, non-metal, and metalloids.  The group contains the nonmetals nitrogen (N), and phosphorus (P), the metalloids arsenic (As) and antimony (Sb), and the metals bismuth (Bi) and Moscovium (Mc).

In periodic table, metal, nonmetal and metalloids are mixed in group is know to be mixed group. Nitrogen group is mixed.

Define periodic table?

The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number. There are five parts in periodic table Component Groups, Ionic Bonds, element periods, and so forth, ionic bonds and Bonds made of metal.

The nitrogen group is said to be mixed because it is contains metal, nonmetal and metalloids. Elements can be classified into metal, non-metal, and metalloids.  Nitrogen group mixed group contains the nonmetals nitrogen (N), and phosphorus (P), the metalloids arsenic (As) and antimony (Sb), and the metals bismuth (Bi).

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Determine whether each of the following reactions is spontaneous.

AHsystem = -75.9 kJ, T = 273 K,
ASsystem = 138 JIK

Answers

Answer:

gxibdkkzvsosvjzkxvdkbdsibsisbdkbslabdldvslbskskd

write a brief description explaining the term "luminous" to a classmate

Answers

Answer:

Plz mark as brainlist

luminous is relating to light as it is perceived by the eye, rather than in terms of its actual energy.

A brief description explaining the term "luminous" to generating or reflecting brilliant light, particularly at night: luminous attire. The bright glow of laptops illuminated the library.

What is luminous ?

Luminous objects are things like the sun that produce or radiate light on their own. Others include a torch, an electric lamp, etc. Non-bright objects are those that don't emit any light of their own and can only be seen when light from a luminous source reflects off of them. Moon, a chair, a painting, etc. are a few examples.

Luminous objects are defined as those that produce their own light. Just the sun emits its own light; all other things only reflect light that is incident upon them.

The presence of luminous items produces the feeling of light. These things are visible because they independently emit light. As an illustration, consider the Sun, the stars, lightbulbs, torches, tube lights, candles, and so on.

Thus,the term "luminous" to generating or reflecting brilliant light, particularly at night: luminous attire. The bright glow of laptops illuminated the library.

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why should bunsen burners not be used when heating organic materials?

Answers

Answer:

Many organic compounds are very flammable.

Explanation:

Because we do not want to inadvertently ignite chemicals and cause a fire or explosion. Most organic chemicals are incompatible with inorganic chemicals, and certain mixtures can cause violent reactions.

Use the following image to answer the following questions. A student was performing an experiment using two identical cups made of styrofoam. The student had Cup A holding water at 90℃ and Cup B holding water at 20℃. The student then put an Aluminum Bar into each cup that was touching the water. As time passed, the student noticed that the temperature of the water in Cup A and Cup B began to change. Question:
A. Predict what will happen to the temperature of the water in Cup A and Cup B after 1 hour has passed. (1 point)

B. Explain and give evidence for what type of heat transfer is occurring between the 2 cups.

Answers

In cup A, the temperature of the water will drop after 1 hour and the temperature of the aluminium will rise. In cup B, there will be no change in temperature of the water and the aluminium. The type of heat transfer taking is conduction.

When two bodies at different temperatures come into contact which other. Heat is transferred from the hotter body to the cooler body until thermal equilibrium is achieved between the two bodies. The temperature of the water decreases while that of the aluminium bar rises.

The aluminium bars were put into the two cups holding water at 90℃ and 20℃ respectively. Since the water in cup A is at a higher temperature than the aluminium, heat is transferred from the water to the aluminium bar until thermal equilibrium is achieved.

In cup B, there is no temperature difference between the water and aluminum hence no heat transfer occurs. Note that a mode of heat transfer that depends on temperature difference between two bodies in contact is conduction.

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A front is a boundary between two _________ ________. *
A. Bodies of land
B. Bodies of water
C. Air masses
D. Cloud sides

Answers

Answer: c

Explanation:

Answer:

C. Air masses

Explaination :

depending on the air masses involved and which way the fronts move, fronts can be either warm, cold, stationary, or occluded.

Which term best describes the relationship between mass and volume of a substance?
(3 Points)

Density

Solubility

Specific Heat

Melting Point

Answers

Answer: Density

Explanation:

Density = (mass)/(volume)

QUESTION 5
A. Aluminum carbonate
(03.04 LC)
Match the formula to the correct name.
Al2O3
e Al(HCO3)3
Al2(CO3)3
B. Aluminum oxide
C. Aluminum bicarbonate
QUESTION A

Answers

The chemical formula of aluminium carbonate is written as Al2(CO3)3.

The chemical formula of a compound is a representation of the atoms that compose the compound. Usually, the chemical formula is derived from the name of the compound.

We know that the carbonate ion is CO3^2- while the aluminium ion is Al^3+. It follows that the compound, aluminium carbonate ought to have the formula, Al2(CO3)3. The compound aluminum oxide has the formula Al2O3 while the compound aluminum bicarbonate has the formula Al(HCO3)3.

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After reading paragraph 1, readers can infer that Thoreaubelieves people should make their own way in life rather thanfollow others. A black and white photograph of a tree in a field that appears to be inverted. The tree is almost completely black against a dark gray sky. The tips of the tree branches are white.The photograph above is an example of _______________. This is a darkroom technique to create surreal images.a.straight photographyc.montageb.close upd.solarization Which pattern in electronegativity do elements in the periodic table display?Electronegativity increases from left to right within a row of the periodic table.Electronegativity decreases from left to right within a row of the periodic table.Electronegativity is lowest on the left and right sides of the periodic table, and highest in the middle of a row.Electronegativity is highest on the left and right sides of the periodic table, and lowest in the middle of a row. How do you think those who believed all white people were born free and equal would react to them? En que se basa Voltaire para dividir la historia?Cuales son las consecuencias de lo que Voltaire llama "el siglo de Luis XIV"DOY CORONITA, ES PARA HOYYYY How does Jody Michael convey her purpose and point of view in "Overcoming Obstacles"? pls answer fast I don't know how to do this stuff ok answer quick . . . . . . . . .. .. . . . ... . .. . . . . . . . what is the LCD of 3/10 & 2/5 since 1995, the daily cost of patient care in community hospitals in the US has increased about 4% pee year. in 1995, such hospital costs were an average of $968 per day. Write an Equation to model the cost of hospital care since 1995. What could Bachman done to keep the Union together Identify the pronoun in this sentence: She needed coffee.a. Sheb. neededc. coffee i need help!!!!!!!!!!!!! Which ruler first established his or her capital at Delhi? Nishi invests 2800 at 4%interest per year.Work out how much she willhave altogether after:3 years,5 years,6 yearsAnd 9 years what is the value of ya cannot be determined b 120 c 60 d 66 The purpose of the colonists actions mentioned in the quote above was to protest La playami familia y yo preferimos ir de vacaciones a la playa. Nosotrospensamos que la playa es el destino ideal porque nos gusta leer dormir frente al cofano. No negamos que sea un poquito aburrido a veces, perocuando el tiempo es perfecto, nosotros cerramos los ojos y nos sentimos muyfelices. Este ao, queremos ir a una playa extica. mis padres quieren ir aMxico, pero yo quiero ir a Puerto Rico.Please re-write the paragraph from the "yo" point of view. Remember thatstem change verbs require a stem change in the "yo" form! What is the meaning of the phrase, "ratify now, amend later"? WILL GIVE BRAINLIEST!Which line uses all trochees? A. Doctor Sanchez waited B. To all the boys I knewC. Timothy, trust in me. D. If grass is green today