Chemistry High School

PLZ HELP ON THESE QUESTIONSSS

Answers

Answer 1

Answer:

wat

Explanation:

Answer 2

3. Ans is 1.11 molal = 1.1 molal

Related Questions

What color of light is emitted from an excited hydrogen atom where the electron has been promoted to n

Answers

Answer:

n1 = 2, n2 = 4

1/wavelength = 1.097*10^7[1/2^2 — 1/4^2]

1/wavelength =0.20568*10^7

wavelength = 486.192*10^-9 Or

wavelength = 486.19 nm (blue color)

Explanation:

I just answered this in class

what type of energy transfer occurs as a coiled spring is released

Answers

Answer:

When a spring is coiled up or a rubber band is stretched, mechanical energy is stored in it. When the spring uncoils or the rubber band snaps back, this energy is released. This stored mechanical energy is called potential energy because it has the potential to make things happen.

Explanation:

Hope it helps you :)

Keep Learning :)

what is 37degrees Celsius in Si units

Answers

Answer:

310.15 Degrees Kelvin

Explanation:

37 Degrees Celsius = 310.15 Degrees Kelvin = 98.6 Degrees Fahrenheit

Conversion Factor from Celsius to kelvin

or 37 + 273 = 310 Degrees Kelvin

[WILL MARK BRAINLIEST!!] Describe the relationship between molecular structure and the strength of electrostatic
forces between molecules. How does this impact boiling and melting points?

Answers

Answer:

increase the bonding strength between two or more molecules

hope this help

Explanation:

Boiling points and melting points

The overarching principle involved is simple: the stronger the noncovalent interactions between molecules, the more energy that is required, in the form of heat, to break them apart. Higher melting and boiling points signify stronger noncovalent intermolecular forces.

How many grams of sodium hydroxide needed to be obtained in order to get 1.7 x 1024 molecules NaOH?

Answers

Answer:

n order to get that molecule you hgave to go into atoms like the skin of of it.... I'm just trying to sound smartI

Explanation:

Select the correct answer. Which statement about cellulose is true? A. It’s a synthetic polymer. B. It’s a raw material used to make plastic. C. It’s produced using oil and gas. D. It’s used to make paper products.

Answers

Answer:

It's used to make paper.

Explanation:

Plato answer.

According to the Law of Conservation of Matter, what happens to atoms of gas in a balloon when it is placed in the freezer?

the number of atoms stays the same and the energy stays the same, keeping the volume the same

the number of atoms stays the same as the atoms lose energy to the colder freezer, slow down, get closer together, shrinking the volume

the number of atoms increases, causing an increase in energy and an increase in volume

the number of atoms decreases, which takes up less space and decreases the volume

Answers

Answer:

the number of atoms stays the same as the atoms lose energy to the colder freezer, slow down, get closer together, shrinking the volume

Explanation:

When a liquid is cooled, the average energy of the molecules decreases. At some point, the amount of heat removed is great enough that the attractive forces between molecules draw the molecules close together, and the liquid freezes to a solid.

I hope it helps.

What are two basic categories of matter

Answers

Liquid
Solid
And Gas (just incase you need it)

5. The excited players celebrated because they won the game. 6. Everyone at the birthday party ate the delicious birthday cake.

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Answer:

5. The excited players celebrated because they won the game. 6. Everyone at the birthday party ate the delicious birthday cake is the question

Explanation:

Bile salts play a crucial role in gastrointestinal homeostasis and digestion. Which phrase is the BEST description of the gastrointestinal function of bile salts?

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Answer:

bile salts emulsify fats and break them down into smaller particles which gives the enzyme lipase a greater surface area to act on during digestion of fats.

Explanation:

What would be the advantage of using a molecular model.

Answers

Answer: Can pick it up and hold it, can rotate groups about bonds

and can look for symmetry

Explanation: A molecular model is a plastic model with interchangeable balls. Represents molecules and their processes.

The creation of mathematical models of molecular properties and behavior is molecular modelling, and their graphical depiction is molecular graphics, but these topics are closely linked and each uses techniques from the others.

Radiant energy is emitted from all objects with temperatures greater than ____________. This means ____________ objects emit radiant energy.

Answers

Radiant energy is emitted from all objects with temperatures greater than ABSOLUTE ZERO. This means ALL objects emit radiant energy.

Radiant Heat and Temperature

Radiant heat is a type of energy that largely depends on the temperature of an object.

This type of energy (radiant energy) is emitted from all objects and can be observed when heat is absorbed on the surface of another material.

Radiant energy can be defined as a type of electromagnetic energy.

Learn more about radiant energy here:

https://brainly.com/question/637839

lemon and amla have a sour taste. why

Answers

Answer:

They both contain citric acid.

Explanation:

Citric acid is sour and is found in citrus fruits such as lemon and amla. Acids usually have a sour taste and therefore lemon and amla are sour.

If you transfer energy into two substances which one would melt first

Answers

Answer:

The substance with a weaker molecular attraction

Girls are usually completely physically mature by _____ years old. A. 17 B. 19 C. 14 D. 21.

Answers

Girls are usually completely physically mature by 17 years old
So, A

Answer:

A. 17

Explanation:

Took the test on Edge & got 100% :D

Which statement best describes the characteristics of the Sun?
Red in color
at the center of our galaxy
Hotter than most stars
medium in size

Answers

Medium in size is your answer

The materials are carried in a cell by the what

Answers

Answer:

The endoplasmic reticulum

The electron configuration of element Y ends in s?p4. What is
the symbol for the ion most commonly formed by this element?
a y2+
b y2-
с ү6+
d Y

Answers

This problem is providing us with the end of the electron configuration an element as s²p⁴ and asks for the most commonly formed ion. At the end, the answer is b Y²⁻.

Electron configuration

In chemistry, when analyzing electron configurations, one must first take into account how the energy levels must be filled with electrons.

Now, note the problem states that the electron configuration ends by s²p⁴, which means it is closer to complete the octet so it needs two electrons in order to do so, as it behaves as a nonmetal.

Therefore, the most commonly ion formed by this element is Y²⁻, because of the fact that it needs two electrons to complete the octet and thus become chemically stable and likely to bond with a metal.

Learn more about electron configuration: https://brainly.com/question/5524513

Copper(I) nitrate, CuNO3, is dissolved in water and forms a transparent, blue mixture. What type of mixture is it

Answers

When a element gets dissolved in water like sugar and water it is: (aq)= Aqueous (dissolved)

What must occur before a newly made polypeptide is secreted from a cell?.

Answers

Answer: Your answer is Its signal sequence must target it to the ER, after which it goes to the Golgi.

Hope this helps!

What happens to the freezing temperature of a solvent when a
solute is dissolved into it?
a It is unaffected.
b It increases
Clt decreases.
d It either increases or decreases

Answers

Answer:it decreases

Explanation:

does this image show a physical or chemical change?

Answers

Answer:

Physical

Explanation:

When a substance changes from liquid to gas it's a physical change. There is no chemical reaction between the rubbing alcohol or anything else that would change it's chemical composition.

This is a physical chance

Calcium-49, a radioactive isotope, has a half-life of 9 minutes. If an 80-gram sample of the isotope decays for 27 minutes, how many grams of the original sample remain?

Select one:
a. 60
b. 10
c. 40
d. 20

Answers

Half-Life is the time required for half of the radioactive nuclei to decay to products.

In this case Calcium-49 has a half-life of 9 minutes and is allowed to decay for 27 minutes, meaning the sample experienced 3 half-lives.

80g of Calcium-49 allowed to decay for 9 minutes results in 40g of Calcium-49 (half-life 1)

40g of Calcium-49 allowed to decay for 9 minutes results in 20g of Calcium-49 (half-life 2)

20g of Calcium-49 allowed to decay for 9 minutes results in 10g of Calcium-49 (half-life 3)

b) 10g of Calcium-49 remains after 27 minutes of decay

hope this helps :)

What is the molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen and 48.68% fluorine if the molar mass of this compound is 156.12 g?

C6H8F4

C5H10F5

C6H6F3

Answers

Hope this can help u

What does an electrically neutral atom have the same number of?

protons and electrons

protons and neutrons

electrons and neutrons

protons, electrons, and neutrons

Answers

Answer:

it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons).

Explanation:

So in all of the answers it would be A. Protons and Electrons

A sample of hydrogen exerts a pressure of 0.429 atm at 50.00°C. The gas is heated to
95.00°C at a constant volume. What will its new pressure be?

Answers

Answer:

5.847atm

Explanation:

according to Gay- Lussac's law

P1/T1 =P2/ T2

Jim's car travels 60.2 meters in 5 seconds. Tara's car travels 72 in 6 seconds. What is the speed for each car? Whose car travels fastest?

Answers

Answer:

Jim's car travels: 12.04 meters per second.

Tara's car travels 12 meters per second.

Explanation:

Tara's car travels the fastest.

Elements on the right side of the periodic table are called.

Answers

Answer:

Nonmetals is the answer!

Hope this helped!

Answer:

NONMETALS. :)

Explanation:

im in sixth btw.

A cube of sugar has the length of one side 4cm.find its volume

Answers

Answer:

Explanation:

since it's a cube all sides are equal

and to calculate volume you multiply the length by the hieght by the width

How does carbon dioxide affect the Earth's climate?

Question 17 options:

Carbon dioxide is being added to the soil, which causes weather phenomenon.

Carbon dioxide mixes with water vapor to take harmful chemicals out of the air.

While carbon dioxide is in the air waiting to be reabsorbed it traps the sun's heat.

Answers

Answer:

While carbon dioxide is in the air waiting to be reabsorbed it traps the sun's heat.

Other Questions

Why did Suleiman allow non-Muslims to live in their own communities?to better understand their religions to keep them away from the city center to reduce the possibility of conflict to make their population seem smallerOne choice question please hurry also if u can answer this I have another one that's unaswered and I'd love it if u could help me please Which symptoms are negative effects of performance drugs? Check all that apply plz help me please please please please please WILL GIVE BRAINLIEST AND 15 POINTS! Which of the following is true about alcohol-attributable deaths?Most deaths are from alcoholic liver disease.Most deaths are from chronic causes.No choice is correctMost deaths are from acute causes.(ANSWER QUICKLY) Art Text QuestionsQuestion one: There were seven elements of the design listed in the unit. Please name five of them, and give a short description of each.Answer: line, shape, space, value, form, texture, and color.Line: I thin or thick drawn/made considered a moving point in space, It is one-dimensional and can vary in width, direction, and length.Shape: a two-dimensional form tends to be colored or circled/linedSpace: the feeling of depth or three dimensions theres a positive and negative space, Positive space is filled in or used to be a part of the drawing, the negative can be the empty space in the paintingValue: it sometimes light and dark colors it is used a scale at times and used to make high or low contrastForm: has a physical being and the other could be like a message from an image,Textures: surface quality, there are real and actual textures, some textures aren't as they seem or made something created to look like something it is notColor: the element of artQuestion two: There were also seven principles of the design listed in the unit. List five of the principles of design and explain what each means. Answer: Emphasis, contrast, balance, pattern, and rhythm.Emphasis: The principle of art that helps the audience put the story of a painting together in their own minds. Any object or area of emphasis is called a focal point.Contrast: The arrangement of opposite elements and effects. For example, light and dark colors, smooth and rough textures, large and small shapes.Balance: The distribution of the visual weight of objects, colors, texture, and space.Pattern: A design in which lines, shapes, forms, or colors are repeated.Rhythm: The principle of design that suggests movement or action.Question three: There are three different ways that balance is used. Please list the three different ways and explain what each means.Answer: Symmetrical, asymmetrical, and radialBalance is the principle of design that teaches the work of art should be in harmony, and that its sides weigh the same so that it doesnt look uneven. 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