how to find the average speed of something

The 2.9 grams would this oxygen (0₂) weigh in its liquid form.

What is oxygen ?

The sole sort of atom in oxygen makes it a chemical element, which is a substance. An oxygen atom has eight protons in its nucleus, as indicated by its atomic number of 8, which is represented by the letter O in its official chemical formula. At room temperature, oxygen is a gas that lacks all other flavors, smells, and colours. Molecular oxygen can be found in nature.

What is liquid ?

Unlike a solid, which is more rigid than a liquid, a liquid is a kind of substance with unique qualities. The opposite of a solid, which has a defined shape, is a liquid, which can flow. An alternative is that a liquid will take on the shape of the container it is held in.

Therefore, 2.9 grams would this oxygen (0₂) weigh in its liquid form.

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The advantage of using telescopes launched into orbit around Earth or sent out into deep space is that the images gathered are usually clearer because they do not have to look through our atmosphere.

What is an atmosphere?

The atmosphere can distort and blur images, making it difficult to observe distant objects with high precision. By placing telescopes in space, scientists can avoid this problem and obtain much clearer and more detailed images of objects in the universe. Additionally, space telescopes can observe a wider range of the electromagnetic spectrum, including ultraviolet and infrared radiation, which are absorbed by Earth's atmosphere.

What is telescopes?

A telescope is an instrument used to observe and study distant objects in space by collecting and focusing electromagnetic radiation. Telescopes can be used to study visible light, infrared radiation, ultraviolet radiation, X-rays, and other forms of electromagnetic radiation. They are important tools in astronomy and have helped scientists make many discoveries about the universe. There are many different types of telescopes, including refracting telescopes, reflecting telescopes, and radio telescopes.

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Answer:

4/15

Explanation:

we can write out an equation by doing (1/5 ÷ 3/4) and then switch the sign to multiplication and we can keep the first fraction the same (in this case 1/5) and then we flip the second fraction BUT when we flip the second fraction upside-down we have to change the symbol to multiplication (1/5x4/3)

then after that all we do is multiply the denominators and numerators :)

1 x 4 = 4

_______

5 x 3 = 15

answer would be 4/15

Answer: the best option to answer the question is the second one (letter B).

Explanation:

The question requires us to choose, among the options given, which one best corresponds to the correct form of disposal fo high-level nuclear waste.

High-level nuclear waste corresponds mainly to highly radioactive materials produced as byproducts of reactions that occur inside nuclear reactors. When they are not of use anymore, they are disposed in underground repositories, without any recycling. The place of disposal of this type of nuclear waste is usually placed in cannister which are placed underground and sealed with rocks. Since the time of decay of high-level nuclear waste can reach hundreds of thousands of years, this type of waste must be disposed of in a way that provides adequate protection for a long time.

Considering the information above, we can say that the best option to answer the question is the second one (letter B).

The combination of alloys 1 and 5 would give the largest temperature-sensitive deflection for your bimetallic temperature sensor design. Thus, the correct option is C.

A bimetallic temperature sensor works by using two different metals with different thermal expansion coefficients that are bonded together. When the temperature changes, one metal will expand more than the other, causing the bond to bend. To achieve the largest temperature-sensitive deflection, it is important to use two metals with the largest possible difference in thermal expansion coefficients.

In this case, alloys 1 and 5 have the largest difference, with thermal expansion coefficients of 25 m/m-K and 2 m/m-K respectively, resulting in the largest deflection and making it the most suitable combination for a temperature sensor design.

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Answer: 23.8

Explanation:

191 Types of Chemical Reactions Do atoms rearrange in predictable patterns during ... When two ratios are set equal, this is called a proportion and the whole ... A sample of gas occupies a volume of 450.0 mL at 740 mm Hg and 16°C. ... at 25° C = 23.8 torr) P 736.2 torr 740 torr P 760.0 torr - 23.8 torr P P -P gas

If a fixed amount of gas occupies 450.0mL at -10.0 C and 191 Torr, the volume of the same gas be at 25.0 C and 1142 Torr is 85.27ml.

The combined gas law is the law of of gaseous state which is made by combination of Boyle's law, Charle's law, Avogadro's law and Gay Lussac's law.

It is a mathematical expression that relates Pressure, Volume and Temperature.

(P1 × V1)÷T1 = (P2 × V2)÷T2

Given,

V1 = 450.0mL

T1 =  -10.0 C

P1 = 191 Torr

T2 = 25.0 C and

P2 = 1142 Torr

V2 = ?

(P1 × V1)÷T1 = (P2 × V2)÷T2

Putting all the values, we get

V2 = 85.27ml

Therefore, If a fixed amount of gas occupies 450.0mL at -10.0 C and 191 Torr, the volume of the same gas be at 25.0 C and 1142 Torr is 85.27ml.

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This element is in group 1.

According to the octet rule, this element would be expected to form an ion with a charge of +1.

If X is in period 5, the ion formed has the same electron configuration as the noble gas Krypton

The symbol for the ion is Rb⁺

Electronic configuration refers to the arrangement of electrons in the orbitals of an atom or molecule, indicating the energy level of the electrons, the number of electrons in each energy level, and the number of electrons in each orbital.

Considering the given element:

It has one valence electron, hence it is in group 1. Group 1 elements form ions with a charge of +1.

Losing one electron will give the ion the same electron configuration as Kyrton since it is the noble gas in Period 4.

The element is rubidium and the ion is Rb⁺.

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Answer:

They all contain sone hydrogen atoms.

Explanation:

H is hydrogen doi

The mass of copper that will be produced from copper oxide is determined as 3.19 g.

The mass of copper that will be produced from copper oxide is calculated as follows;

2Cu + O₂  -----> 2CuO

2          1             2

2(63.5) ------------ 2(79.5)

x ---------------------- 4 g

x = (4 x 2 x 63.5)/(2 x 79.5)

x = 3.19 g

Thus, the mass of copper that will be produced from copper oxide is determined as 3.19 g.

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Answer:

What’s the answer

Explanation:

I neeeddsdd

When you see  or visit grasslands you know that :

Grasslands are a type of vegetation found mostly in areas with favourable weather conditions such as mild summers and right amount of precipitation which provides the grasslands with enough water for proper growth.

Other types of vegetation include :

Desert vegetation expreciences very hot summers and little precipitation which leads to the scarcity of green vegetation, while forest vegetation expreciences a very high level of precipitation.

Hence we can conclude that When you see  or visit grasslands you know that :They have mild to hot summers ,They have a lot of precipitation  

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Answer:

They have little precipitation.

They have cold winters.

They have mild to hot summers.

the final temperature of the calorimeter after the combustion reaction is approximately -3.51°C

To determine the final temperature of the calorimeter after the combustion reaction, we can use the principle of conservation of energy. The heat released by the combustion of TNT will be absorbed by the bomb calorimeter, resulting in a temperature increase. The heat released can be calculated using the equation:

Heat released = (mass of TNT) × (combustion heat of TNT)

Heat released = (3.00 g) × (-3403.5 kJ/mol / 227.13 g/mol) = -45.00 kJ

Next, we can use the heat capacity of the calorimeter to calculate the temperature change:

Heat released = (heat capacity of calorimeter) × (temperature change)

-45.00 kJ = (1.93 kJ/°C) × (final temperature - 19.8°C)

Solving for the final temperature:

(final temperature - 19.8°C) = -45.00 kJ / 1.93 kJ/°C

(final temperature - 19.8°C) = -23.31°C

Final temperature = -23.31°C + 19.8°C = -3.51°C

Therefore, the final temperature of the calorimeter after the combustion reaction is approximately -3.51°C.

To calculate the vaporization enthalpy of TNT, we need to know the enthalpy change associated with the vaporization process. Unfortunately, the given information does not include the vaporization enthalpy of TNT.

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Answer:

below•

Explanation:

6.1 g total?

I don't really know alot about Chemistry

Answer:

A and b are the both the answers

(a) The mass of hydrogen sulfide produced in the reaction is 9.44 g.

(b) Water is the limiting reagent in the given reaction.

Al2S3 + 6H2O ---> 2Al(OH)3 + 3H2S

mass of water in the reaction = 6(18 g/mol) = 108 g/mol

mass of hydrogen sulfide in the reaction: = 3(34) = 102 g/mol

108 g/mol of H2O ------- > 102 g/mol of H2S

10 of H2O -----------> ?

= 9.44 g

Aluminum sulfide will be completely consumed by the reaction while some fraction of water will remain. Thus, water is the limiting reagent in the given reaction.

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Heat can be transmitted from a test tube to the surroundings by several different mechanisms, including conduction, convection, and radiation.

Conduction is the transfer of heat through a material, from a region of higher temperature to a region of lower temperature. In the case of a test tube, heat can be conducted through the glass walls and into the surrounding air or other materials that the test tube is in contact with.
Convection is the transfer of heat through the movement of fluids or gases. In the case of a test tube, as the contents of the test tube heat up, convection currents can be set up within the liquid or gas, which can transfer heat to the surrounding air or other materials.

Radiation is the transfer of heat through electromagnetic waves, such as infrared radiation. As the test tube and its contents heat up, they will emit some amount of infrared radiation, which can be absorbed by the surrounding air or other materials and contribute to the transfer of heat to the surroundings.
In general, the mechanism of heat transfer that dominates will depend on a variety of factors, such as the specific materials involved, the temperature difference between the test tube and the surroundings, and the rate of heating.

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Answer:

11 electrons

Explanation:

The number of electrons is the same as the number of protona in a ATOM.

They will most likely be different in a ion, simple bond or a convalent bond.

Answer:

It is called 2,4-dinitrophenylhydrazine benzene which confirms presence of a carbonyl compound such as ketone and aldehyde

\({}\)

Answer:

2,4-Dinitrophenylhydrazine

Explanation:

Brady's reagent or Borche's reagent is prepared by dissolving DNPH in a solution containing methanol and some concentrated sulfuric acid. This solution is used to detect ketones and aldehydes. A positive test is signaled by the formation of a yellow, orange, or red precipitate of the dinitrophenylhydrazone

Global warming is a phenomenon that has become an increasing concern worldwide.

The increase in Earth's average surface temperature due to rising levels of greenhouse gases, particularly carbon dioxide, in the atmosphere is referred to as global warming.

It is most closely associated with climate change.

It is a long-term trend that has become one of the most pressing environmental problems facing our planet today.

The primary cause of global warming is human activity.

Human beings are responsible for releasing large amounts of carbon dioxide, methane, and other greenhouse gases into the atmosphere through the burning of fossil fuels such as coal, oil, and natural gas.

These gases trap heat from the sun's rays and cause the Earth's temperature to rise, leading to global warming.

The effects of global warming can be seen in rising sea levels, more frequent and severe weather events such as hurricanes, droughts, and floods, and the melting of ice caps and glaciers.

It is also having a significant impact on the world's ecosystems, with changes in temperature and precipitation patterns affecting the distribution and abundance of plant and animal species.

Although global warming is a serious issue, there are ways to reduce its impact.

Reducing our dependence on fossil fuels by transitioning to renewable energy sources such as wind and solar power can help to reduce greenhouse gas emissions.

Additionally, planting trees and other vegetation can help to absorb carbon dioxide from the atmosphere and store it in the ground. Education and awareness-raising can also help individuals and communities take action to mitigate the effects of global warming.

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Answer:

cornfield

Explanation:

The radius of the atom of Al in the face-centered cubic structure is calculated to be 143 pm.

The face-centered cubic lattice has been contributed with atoms at the edge of the cubic structure.

The face-centered cubic consists of 4 atoms in a lattice.

The mass of the unit cell of Al can be calculated as follows;

6.023 × 10^23 atoms = 1 mole

4 atoms = 4 / 6.023 × 10^23 moles

The mass of 1 mole Al is 26.98 g/mol.

The mass of 4 / 6.023 × 10^23 moles = (4 / 6.023 × 10^23) × 26.98

The mass of 1 unit cell of Al = 1.792 × 10^-22 g

The volume of the Al cell can be calculated as follows;

Volume = Density × Mass

The volume of Al unit cell = 2.71 × 1.792 × 10^-22

The volume of Al cell = 6.613 × 10^-23 cm³

The volume of the cube can be given as follows;

Volume = edge length³

6.613 × 10^-23 cm³ = edge length³

Edge length =  \(\sqrt[3]{6.613 X 10^{-23} }\) cm

Edge length = 4.044 × 10^-8 cm

Edge length = 4.044 × 10^-10 m

In a face-centered cubic lattice structure, the radius of the atom can be given as follows;

Edge length = √8 × radius

4.044 × 10^-10 m = √8 × radius

Radius = 1.430 × 10^-10 m

1 m = 10^12 pm

1.430 × 10^-10 m = 143 pm

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Answer:

1330 mm Hg

1 atm = 760 mm Hg

there will be a multiplication or division based on the direction of the change

Answer:

Valence electrons

Explanation:

A material changes physically when its state changes. They don't involve any alterations to the matter's chemical composition and are reversible. State changes that occur frequently include melting, freezing, sublimation, deposition, condensation, and vaporization.

Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1?

"Arrow 4."

The energy required to go from a liquid to a gas is equivalent to that required to go from a gas to a liquid.

The process by which a substance transforms from the liquid phase to the gaseous state is known as boiling.

Diagram of water in phase:

Water changes from a liquid to a gas through the phase-shifting process of evaporation (water vapor).

Water changes its state from a gas to a liquid during the phase shift process known as condensation, and the resulting vapor turns into a cloud.

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Answer: arrow 4

Explanation: just took the test ;-)

Answer:

1 watt is conduned by you ok