CHEMISTRY HIGH SCHOOL

Which Kelvin temperature is equal to 200.°C?

Answers

Answer 1

Answer:

C = Celsius
K = k=Kelvin

C + 273.15 = K
200 + 273.15 = K
473.15 = K

Answer 2

Answer: Celsius + 273.15 = temperature in Kelvins

200 + 273.15 = 473.15 Kelvins

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100 Points and Brainliest to the correct answer, if you type a random answer I will reportHow can matter and energy be described and conserved in a variety of systems? Hypotheses: As you view each scenario, make a prediction about what will occur when prompted by the video. The Iced Tea Debate The Salty Soup Predictions—What do you think will happen? Materials: 1. Demonstrations: “The Iced Tea Debate” and “The Salty Soup.” Procedures: 1. Observe and analyze the following video demonstrations: “The Iced Tea Debate” and “The Salty Soup.” 2. Use the data table to record observations on physical and chemical change, and the conservation of matter and energy. Variables: List the variables for The Iced Tea Debate: Independent: Dependent: Control: List the variables for The Salty Soup: Independent: Dependent: Control: Data and Observations: Record your detailed observations and draw some brief conclusions in the table below. The Iced Tea Debate The Salty Soup Describe the physical changes you observed. Describe the chemical changes you observed. Describe the instances of conservation of matter and energy in each demonstration. Questions and Conclusion 1. How was matter and energy conserved in each demonstration? 2. What phase changes did you observe? 3. What kind/s of energy transfers did you notice in each scenario? 4. Identify an example of matter and energy conservation in the world around you. Conclusion: How did your observations support or contradict your predictions? Describe an experiment that could further explore physical or chemical change.

Answers

Final answer:

The experiments 'The Iced Tea Debate' and 'The Salty Soup' illustrate different physical changes and energy transfers in the context of the Law of Conservation of Matter and Energy.

Explanation:

In 'The Iced Tea Debate', the independent variable could be the temperature of the tea, the dependent variable could be how quickly the ice melts and the control variable could be the amount of tea used in each trial. The Law of Conservation of Matter and Energy states that matter and energy cannot be created or destroyed in an isolated system. In this case, the ice melting is a physical change, and the energy transferred is thermal energy from the tea to the ice.

In 'The Salty Soup,' the independent variable could be the amount of salt added, the dependent variable could be the taste of the soup, and the control variable could be the type of soup used. The added salt dissolving into the soup is a physical change, and no noticeable energy transfer occurs.

One example of conservation of matter and energy in everyday life is the process of photosynthesis in plants. The plant absorbs sunlight (energy), carbon dioxide, and water, and converts them into glucose and oxygen, thus conserving matter and energy.

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Final answer:

In these demonstrations, matter and energy were conserved, as total mass and energy stayed constant. Significant phase and energy transformations were observed, like the melting of ice and the dissolving of salt. The total mass before and after the transformations remained the same, demonstrating the law of conservation of mass.

Explanation:

Matter and energy can be described as being conserved in a variety of systems because they can neither be created nor destroyed, only transferred between objects or converted from one form to another. In 'The Iced Tea Debate' and 'The Salty Soup' demonstrations,

Variables would include: Independent variable: the substance added (be it ice tea or salt); Dependent variable: physical and chemical changes observed; Control variables: the initial conditions of the system, like temperature and pressure.

When analyzing the results of each of these demonstrations, you should observe energy transfers, in the form of heat in both scenarios.

Moreover, there would be conservation of matter observable in both scenarios. This can be proven by extracting and weighing all substances before and after their reactions, summing up the total mass, which should stay constant.

To answer the questions:

In each demonstration, matter was conserved as the total mass remained constant despite the transformations. Energy was conserved as it was converted from one form to another.
Phase changes observed would be the melting of ice in the Iced Tea and the dissolving of salt in the soup.
Energy transfer in both scenarios was likely in the form of heat, from the hotter substance to the colder one.
An example of matter and energy conservation in the world around you could be photosynthesis.

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Which of the following is not a state of matter?A. solid
B. liquid
C. water
D. plasma

Answers

Answer: Option (C) is the correct answer.

Explanation:

Solid and liquid are the states of matter. Plasma is also a state of matter where a number of electrons move freely around the nucleus of an atom.

Whereas water is a liquid itself and liquid is a state of matter but water is not a state of matter.

Therefore, we can conclude that water is not a state of matter.

$\boxed{{\text{C}}{\text{. Water}}}$ is not a state of matter.

Further Explanation:

Matter:

Anything that acquires space and has mass is termed as matter. It is made up of atoms. These atoms can be bonded so strongly or can be far apart from each other. The states of matter can be classified on the basis of features that are visible or can be felt.

States of matter:

1. Solid

It has a definite shape and volume. These are generally hard and have a regular arrangement of its constituent particles. These can be amorphous or crystalline. The intermolecular forces in the solids are very strong and thus the motion of particles in solid is almost negligible. Rock, wood, sugar, and diamond are examples of solids.

2. Liquid

It has a definite volume but can have the shape of any container in which it is placed. The intermolecular forces in the liquids are weaker than that in solids and thus the motion of particles in liquids is more as compared to solids. These have the property to flow. Water, mercury and bromine are examples of liquids.

3. Gas

It has neither a definite shape nor a definite volume. These are highly compressible and have an irregular or disordered arrangement of its constituent particles. The intermolecular forces in the gases are the weakest and thus the motion of particles in a gas is very high. Oxygen, hydrogen and carbon dioxide are examples of gases.

4. Plasma

It has neither a definite volume nor a definite volume. It is present in ionized gases but its uniqueness differentiates it from gases. Plasma contains free charges that make it conductive. Stars and neon signs are examples of plasma.

So solid, liquid and plasma are the states of matter. But water is an example of liquid and therefore an example of a state of matter. Therefore water is not a state of matter.

Learn more:

1. The subatomic particle with the least mass: brainly.com/question/2224691

2. Bohr’s model of the atom: brainly.com/question/2965079

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Matter in our surroundings

Keywords: state of matter, solid, liquid, water, plasma, matter, bromine, hydrogen, diamond, volume, shape, hard, flow, regular arrangement, constituent particles,

NEED HELP!!!!!!1s² 2s² 2p⁶ 3s² 3p⁵ is the electron configuration for which element? *

fluorine
chlorine
sulfur
bromine

Answers

1s² 2s² 2p⁶ 3s² 3p⁵ is the electron configuration for B)chlorine.

What are the 4 types of electron configuration?

The 4 special types of orbitals (s,p,d, and f) have distinctive shapes, and one orbital can hold a most of twoelectrons. The p, d, and f orbitals have different sublevels, accordingly can keep extraelectrons. As stated, the electronconfiguration of each detail is precise to its position on the periodic table.

In atomic physics and quantumchemistry, the electronconfiguration is the distribution of electrons of an atom or molecule (or different bodily structure) in atomic or molecularorbitals.

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Chlorine.

If you search Google images for "Aufbau principle periodic table," you'll find some handy diagrams that will make it much easier to determine an element based on its electron configuration. Determine the number of electrons in the last part of the configuration (in this case, 5), locate that group on the Aufbau periodic table diagram, then count that number from left to right within that group. In this case, within the "3p" portion of the Periodic table, count to 5 and you'll find Chlorine as the answer.

Select all that apply. The three subatomic particles are _____. neurons photons protons neutrons charges electrons

Answers

Neutrons, Electrons, and Protons
Neutrons are the neutrally charged particles that are found in the nucleus.
Protons are the positively charged particles that are found in the nucleus.
Electrons are the negatively charged particles that are found in the atom's orbitals/shells

Answer:Neutrons, Electrons, and Protons

When metals form ions, they tend to do so by what

Answers

Losing electrons and forming positive ions

Metals need to give away atoms. Therefore, they tend to give away atoms and become positively charged ions. They're called 'cations' when they become positive.

A balloon that had a volume of 3.50 L at 25.0°C is placed in a hot room at 40.0°C. If the pressure remains constant at 1.00 atm, what is the new volume of the balloon in the hot room?

Answers

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Charles' gas law is used here. Therefore the new volume of the balloon in the hot room is 3.68 L.

What is ideal gas equation?

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. Vanderwaal gas can behave as ideal gas low pressure and high temperature.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of gas

V= volume of gas

n =number of moles of gas

T =temperature of gas

R = Gas constant = 0.0821 L.atm/K.mol

Combining Boyle's and Charles' gas law

V₁/T₁ = V₂/T₂

3.50 L ÷298 K = V₂÷313 K

V₂ = 3.68 L