Chemistry High School

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Plz Help Me And I Promise I Will Make You He Brainiest

Answers

Answer 1

Answer:

2

Explanation:

1 is definitely wrong

density must be lower to atop another liquid

in 3 ,I consider the example of water and oil whi has a lower boiling point

Answer 2

Answer:

2

Explanation:

Related Questions

Nitrogen (N) is element number 7 in the periodic table. It has a mass number of 14. Nitrogen
has gained 3 electrons. Nitrogen is a/an___.
a. Anion
bcation
c. Isotope
d. All of the above

Answers

The answer is ISOTOPE

Is all matter the same?

Answers

Answer:

What is your body made of? Your first answer may be that it is made up of different organs like the heart, lungs, and stomach, which work together to keep it going. Or you could go even closer and say that it is made of many types of cells. However, at the most basic level, your body — and indeed, all life, like everything that is not alive — is made up of atoms, often organized into larger structures called molecules

Explanation:

What location of an atom are protons,neutrons, and electrons found

Answers

Answer:

Nucleus is the answer of your question

Answer:

nucleus is your awnser

Use the diagram to select the one true statement about the
rock layers
Use the following diagram to answer questions 3-6.
A. A occured after D
B. C is younger that B
C. C occured before D
D. A is older than B

Answers

Answer:

a is occured after d i think

why is it that you can not feel earths movement but you can observes its effects
a) a rotates
b) earth revolves
c) earth only moves once a year
d) earth has gravity

Answers

The correct answer would be we have no other frame of reference besides the sky. We could actually tell we are moving because of the shifting of stars in the sky over time. But really, “A” would be your answer. We have the same momentum of the earth. It’s like being on a train at a constant speed. The only way you know you’re moving is if you look out the window or the speed changes causing you to be pushed around. Same thing with earth, our only reference is the sky

Which refers to the number of wavelengths that pass a fixed point in a second?
wavelength
O amplitude
frequency
O compression


Please hurry will give brainliest on 10 mins

Answers

Answer:

frequency

Explanation:

The number of wavelengths that pass through a fixed point in a second is called the frequency of the wave. It has the unit of Hertz. Hence, option C is correct.

What is frequency ?

The term that refers to the number of wavelengths that pass a fixed point in a second is frequency.

Frequency is a fundamental concept in wave motion and is defined as the number of complete cycles of a wave that occur per unit time. For example, the frequency of a sound wave is measured in hertz (Hz) and is equal to the number of sound wave cycles that occur per second.

The higher the frequency of a wave, the more cycles occur in a given period of time. Wavelength, on the other hand, refers to the distance between two adjacent points on a wave that are in phase with each other, such as the distance between two crests or two troughs.

Wavelength and frequency are related, and the frequency of a wave is inversely proportional to its wavelength. As the frequency of a wave increases, its wavelength decreases.

Amplitude refers to the maximum displacement of a wave from its equilibrium position, while compression is a region in a longitudinal wave where the particles are close together. Hence, option C is correct.

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Using the enlarged metric ruler segment shown below, what is the length of the
blue line in centimeters?

Answers

Answer:

1.8 cm

Explanation:

To measure length, use a metric ruler. It is separated into centimeter-sized units. One centimeter is represented by each number on the ruler. The longest mark is the centimeter.

What is the enlarged metric ruler segment?

A metric scale is used to quantify traits or variables. Interval scales, ratio scales, and absolute scales are all grouped under the phrase “metric scale.”

The majority of statistical calculations and comparisons are possible with quantitative numerical values.

To the nearest tenth of a centimeter (0.1 cm), a metric ruler, for instance, may measure length. Using a separate metric ruler, you can measure lengths to the nearest 0.05 centimeters (0.05 cm).

The measurement with the lowest degree of uncertainty (0.05 cm) is more accurate.

Therefore, 1.8 cm is the length of the blue line in centimeters.

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evaporation
the process in which a solid changes directly into a gas (the term is
sometimes also used for the reverse process)*
CO
1
Chapter 3 Section 2

Answers

Deposition is the phase where gas transfers into solid without passing through the liquid phase.

But the process where solid changes into gas without the liquid transition is called sublimation.

So I’m not exactly sure. But I hope this helps.

give an example how we use science in our every day life

Answers

Answer: When you turn a light on it becomes bright :)

In electrical wiring, a light switch is a switch most commonly used to operate electric lights, permanently connected equipment, or electrical outlets. Portable lamps such as table lamps may have a light switch mounted on the socket, base, or in-line with the cord. Manually operated on/off switches may be substituted by dimmer switches that allow controlling the brightness of lamps as well as turning them on or off, time-controlled switches, occupancy-sensing switches, and remotely controlled switches and dimmers. Light switches are also found in flashlights, vehicles, and other devices.

An example of how we use science in our everyday life is cooking and baking.
We combine certain ingredients and certain measurements to make delicious foods and drinks. And when we add heat, it makes bread rise, causing a chemical reaction because you cannot reverse a cake back into the individual ingredients.

Hope this helps! :3
(This is not a sample from anything. This is in my own words, so I’m not sure if it is right, but this is an example of how we use science.)

Describe the way matter is measured

Answers

Answer:

in volume in weight and distibution

Explanation:

In volume and weight have a good day

Which process most likely takes place when the kinetic energy of molecules overcomes the intermolecular forces?
boiling
condensation
freezing
solidification

Answers

Answer:

Explanation:

boiling

According to the forces of attraction, boiling takes place when the kinetic energy of molecules overcomes the intermolecular forces.

What are forces of attraction?

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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What is the average acceleration from 0 seconds to 4 seconds

Answers

Answer:

1

Explanation:

you would take 4 subtract 0 which is 4 and divide it by 4 which is 1

the chemical formula 4N2O has how many atoms of each element?

Answers

Answer:

8;1

Explanation:

eight nitrogen and one oxygen

Is acetaminophen conductive in water?

Answers

Answer:

Yes, acetaminophen is conductive in water.

Explanation:

Have a nice day!

Acetaminophen is conductive in water and it is electrochemically active. It is used as an antipyretic drug.

What is acetaminophen ?

Acetaminophen is an organic compound containing the amine functional group. One of the most popularly prescribed analgesic and antipyretic medications, acetaminophen (AC), is thought to be both effective and safe.

AC is not poisonous or harmful when used rationally, but an overdose or continued use may cause nephrotoxicity and severe hepatotoxicity. As a result, AC monitoring is crucial for drug safety.

Various conductometric measurements reported the fair conductivity shown by acetaminophen in water. The intermolecular interaction of acetaminophen in water make it conductive.

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Is this isotope stable or radioactive?

Answers

Answer:

radioactive

Explanation:

becasue i said so. Periodt

Answer:

An unstable isotope emits some kind of radiation, that is it is radioactive.

Explanation:

Zn + 2HCl--------------> Zn Cl2 + H2
This is ______________________ kind of reaction.

Answers

Answer:

Single displacement (Substitution)

Explanation:

According to Coulomb's law, what will happen to the electric force between
two identical negative charges as they move closer together?
A. F, will stay positive and increase in magnitude,
B. Fe will stay negative and increase in magnitude,
C. F, will become negative and decrease in magnitude
0
D. F will become positive and decrease in magnitude,
SUS

Answers

Answer:

A

Explanation:

Apex

PLZ DON"T JUST PICK AN ANSWER I REALLY NEED HELP
5. Sodium-24 has a half-life of approximately 15 hours. If only one-eighth of the sodium-24 remains, about how much time has passed?
A. 15 hours
B. 30 hours
C. 45 hours
D. 60 hours

Answers

Answer:

60 hours

Explanation:

18.0 __15__ 9 __15__ 4.5 __15__ 2.25 __15__ 1.125g

15(4)= 60

Sodium-24 has a half-life of approximately 15 hours. If only one-eighth of the sodium-24 remain , then it has been passed in 60 hours. So option D is correct.

What is half life and decay law ?

The time required for half of the original population of radioactive atoms to decay is called the half-life. The relationship between the half-life, T₁ ÷ 2, and the decay constant is given by T₁/2 = 0.693/λ

According to radioactive decay law, the rate of decay of radioactive atoms at any instant is directly proportional to the number of atoms present at that instant.

dtd N ∝ N

dtd N = λ N

where, N is number of integrated nucleus present in the sample at any time t and λ is decay constant.

Thus ,option D 60 hours is correct.

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What Element am I?
I have 5 Valence Electrons.
I am in the 5th row.
My atomic mass is less than Bismuth *
с

Answers

Answer:

Nitrogen

Explanation:

Nitrogen has 5 Valence Electrons.

And its atomic mass is also less than Bismuth.

There are other elements in the 5th row but this one has the lowest atomic mass compared to the others.

Check out the PNG below!
Thank you to the person out there!

Answers

Answer:

4 Ethanol has a boiling point of 89 C at standard pressure.

What happens to the temperature of a substance during a change of state?
A. It increases quickly.
B. It changes gradually.
C. It decreases quickly.
D. It stays the same.

Answers

D is the answer it stays the same

Answer:

Explanation:

It remains the same!

Which statement describe global warming? Select 2 answer choices

Answers

Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere

Compared to gases liquids can be easily compressed. True or false?

Answers

Answer:

true

Explanation:

Answer: false, gases can be more easily compressed than liquids.

Explanation: They're easier to compress because there's much more empty space between the gas particles.

is salt always soluble is water?

Answers

For example, salts of sodium, potassium and ammonium are usually soluble in water. Notable exceptions include ammonium hexachloroplatinate and potassium cobaltinitrite. Most nitrates and many sulfates are water-soluble

Answer:

Many ionic compounds exhibit significant solubility in water or other polar solvents. Unlike molecular compounds, salts dissociate in solution into anionic and cationic components. For example, salts of sodium, potassium and ammonium are usually soluble in water.

Explanation:

Hope this helps

(1 Point)
How many atoms are there in 3.33 moles of strontium?

Answers

I don’t know the answer but there’s this app called socratic that might be able to help.

Answer:

every mole of anything contains Avogodro's number of atoms.  So: 6.08x10^23 x 3.33 = ?

Explanation:

PLEASE I NEED HELP ASAP

Answers

Answer:

Because the density of water is one

Which of the following is not part of a phospholipd?

A) galactose
B) fatty acid
C) phosphate
D) glycerol

Pls help due today

Answers

Answer:

A) Glycerol

Explana

What are the three basic forms of matter?

Answers

Answer:

Solid, Liquid, and Gas!

Explanation:

Convert 20 cals to J

Answers

Answer: 83.68 J

Explanation:

1 cal=4.184 J

1×20=4.184×20

20cals=83.68 J

Why do isotopes of the same element have the same atomic size?

Answers

Answer:

Isotopes of any given element all contain the same number of protons, so they have the same atomic number (for example, the atomic number of helium is always 2). Isotopes of a given element contain different numbers of neutrons, therefore, different isotopes have different mass numbers.

The atomic size of an element significantly depends on the number of protons. It is the characteristic property of isotopes that they possess the same number of protons which is responsible for the same atomic size.

What are Isotopes?

Isotopes may be defined as one of two or more species of atoms of a chemical element that have the same atomic number and location in the modern periodic table with identical chemical behavior but with different atomic masses and physical properties.

In a more simple sense, isotopes are those elements that have the same atomic number but different atomic mass. The atomic number depends on the number of protons which remains constant in isotopes. So, the isotopic elements have identical atomic sizes.

Therefore, the isotopes of the same element have the same atomic size.

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Other Questions
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Nitrate pollution is also a suspected cause of anoxic "dead zones" in the ocean. Which of the following might help reduce nitrate pollution? Use of synthetic fertilizers often leads to the contamination of groundwater with nitrates. Nitrate pollution is also a suspected cause of anoxic "dead zones" in the ocean. Which of the following might help reduce nitrate pollution? adding nitrifying bacteria to the soil using ammonia instead of nitrate as a fertilizer growing improved crop plants that have nitrogen-fixing enzymes adding denitrifying bacteria to the soil Carrie and nine of her friends go out to dinner. The total bill comes to $200. They decide to leave a 15% tip. Each person will contribute an equal amount to the total tip. What each person should contribute This is a very long thing, Answer any of the questions that you can please anything helps just make sure you put the numbers for the questions you answer: Question 1: Laws of Conservation of Matter and Energy (2 points)a. Law of conservation of matter (1 point) i. What does the law say about matter? ii. What about matter can change and what does not change, according to the law?b. Law of conservation of energy (1 point) i. What does the law say about energy? ii. What about energy can change and what does not change, according to the law?Question 2: Phases of Matter (2 points)a. What are the four states, or phases, of matter? Describe the shape and volume properties of each phase. Can they change, or are they fixed? (1 point) i. _______________________Shape:Volume: ii. _______________________Shape:Volume: iii. _______________________Shape:Volume: iv. _______________________Shape:Volume:b. When heat energy is absorbed by matter, the matter's temperature increases. When heat energy is released by matter, the matter's temperature decreases. The matter can also change from one phase to another when heat energy is absorbed or released. 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