Asteroids in the main asteroid belt at certain distances from the Sun are in an orbital resonance with Jupiter, creating gaps in the belt called Kirkwood gaps Jupiter orbits the Sun with a period of 11.9 years What is the period of a belt asteroid in an 11:5 orbital resonance with Jupiter

Answer:

The father of Chemistry is Antoine Lavoisier. He was born in 26 August 1743 and died in 8 May 1794.

Explanation:

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As the temperature of the ocean increases, its ability to absorb carbon dioxide (CO2) decreases.

Under normal pressure and temperature, carbon dioxide (CO2) is a colourless, non-flammable gas. Carbon dioxide has a significant role in the composition of our planet's air, while being far less prevalent than nitrogen & oxygen in the atmosphere. One carbon atom & two oxygen atoms make up the molecules of carbon dioxide (CO2).

Carbon dioxide is utilized as a coolant, in fire extinguishers, to blow coal, foam rubber and plastics, inflate life rafts & life jackets, blast coal, promote plant growth in greenhouses, immobilise animal before slaughter, & in carbonated drinks.

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If the 13.5 mol of the Zn and 3.5 mol of S are mixed together and the heated, the mass of the ZnS will be produced is 93.97 g.

The chemical equation is as :

Zn + S -->  ZnS

The moles of the zinc, Zn the = 13.5 mol

The moles of the sulfur, S = 3.5 mol

1 mole of the Zn produces the 1 mole of the ZnS

1 mole of the S produces the 1 mole of the ZnS

The S is the limiting reactant. The production of the ZnS is depends on the the sulfur.

1 mole of the S produces the 1 mole of the ZnS

The moles of the ZnS = 3.5 mol

The mass of the ZnS = moles × molar mass

The mass of the ZnS = 3.5 × 97.47

The mass of the ZnS = 93.97 g

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Explanation:

loosing or gaining one or more electrons

A small drop of oil in water assumes a spherical shape. This is due to the property of surface tension.

Surface tension is defined as, " The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules". In other words, this property of the liquid holds the liquid molecules together and resists any external force on the surface.

The surface tension of a drop of oil tends to have a minimum surface area, therefore the drop of oil acquires a spherical shape. Also, oil is made up of non-polar molecules which doesn't form any interactions with the polar water molecule, so there is an adhesive force between the molecules of oil and water.

As  a result, due to this property of surface tension, a drop of oil in water assumes a spherical shape.

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Answer:

43 i think

Explanation:

Answer:

Explanation:

What’s 3%

The following balanced chemical equation may be used to describe the interaction between aluminum (Al) and calcium nitrate (Ca(NO₃)₂):

2 Al + 3 Ca(NO₃)₂ → 2 Al(NO₃)3 + 3 Ca

Reactants are the chemicals that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.

The substances that initiate a chemical reaction. Products are the substances that are created during the reaction. Compounds or elements can act as reactants and products.

Aluminium and calcium nitrate interact in this reaction to form aluminium nitrate (Al(NO₃)₃) and calcium (Ca), which are the end products.

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Answer:

See explanation

Explanation:

If we look at the question closely, we will notice that the metal in question must be aluminum.

When aluminum is treated with sodium hydroxide, a precipitate, aluminium hydroxide is formed as follows;

Al(s) + 3NaOH(aq) ---> Al(OH)3(s) + 3Na(s)

In excess sodium hydroxide, the precipitate dissolves as follows;

Al(OH)3(s) + NaOH(aq) ----> [NaAlOH4]^-(aq)

The complex formed is sodium aluminum tetrahydroxo aluminate III.

The reaction of aluminum faith dilute hydrochloric acid occurs as follows to yield aluminum chloride;

2Al(s) + 6HCl(aq) ----> 2AlCl3(aq) + 3H2(g)

When aluminum metal is heated strongly, it yields aluminum oxide;

2Al(s) + 3O2(g) ---> Al2O3(s)

The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B

The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.

Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.

In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.

Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.

Option B

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Barium chloride turned from sparkly white into dull white during the heating process.

An inorganic substance with the formula BaCl2 is barium chloride. It is among the most popular barium salts that dissolve in water. Like the majority of some of the other water-soluble barium salts, is also white, extremely hazardous, and gives flames a yellow-green tint.

Among the most common barium salts is barium chloride. Bacl2 is hygroscopic and soluble in water. Deep hypokalemia, generalized muscle weakness, and eventually paralysis of the limbs and breathing muscles can occur within 1 to 4 hours of consumption.

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Answer:

In Parts I and II of the lab, what happened to the electrons of each element to produce the different colors of light? ... When heat was added to the elements, the electrons absorbs the energy and moves to its excited state. Once the electron starts to fall back to a lower orbit, it emits energy in the form of light.

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Explanation:

Answer:

Ca(OH)2 + HCI

Explanation:

Calcium hydroxides formula is: Ca(OH)2

Hydrochloric Acids formula is : HCI

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In the given diagram of photosynthesis:

1. Carbon dioxide CO₂

2. Glucose C₆H₁₂O₆

3. ATP

Photosynthesis can be described as a process by which phototrophs convert light into chemical energy. This chemical energy is stored in the form of sugars, which are generated from water and carbon dioxide.

Photosynthesis reaction involves carbon dioxide and water which yield two products oxygen and glucose. Therefore, the photosynthesis reaction is said to be an endothermic reaction.

\(6CO_2 + 6H_2O \longrightarrow C_6H_{12}O_6 + 6O_2\)

Photosynthesis takes place when plants use light energy to transform carbon dioxide gas and water into glucose and oxygen gas. Each chloroplast in plants contains a green-colored pigment known as chlorophyll. Sunlight is absorbed by chlorophyll whereas carbon dioxide and oxygen enter via the tiny pores of the stomata of leaves.

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The mass of the cereal that you would need to consume can be obtained as 84.8 g

The number of moles, denoted by the symbol "n," is a fundamental unit of measurement in chemistry that represents the amount of a substance. It is used to quantify the quantity of atoms, molecules, or ions in a sample.

Number of moles of sucrose in the cereal = 11g/342 g/mol

= 0.03 moles

Now;

0.03 moles of sucrose is contained in 60 g of cereal

0.0424 moles of sucrose would contain 0.0424 moles * 60 g/0.03 moles

= 84.8 g

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The correct answer in this case is binding energy, which is the energy released when a collection of nucleons form a nucleus.

The correct answer is the last choice.

CuI2 is not a known compound. Copper compounds typically have different oxidation states for copper, resulting in various compound names.

Copper(II) oxide (CuO): It is a black solid compound where copper is in the +2 oxidation state. It is commonly used as a pigment and in catalytic reactions.

Copper(II) sulfate (CuSO4): It is a blue crystalline compound in which copper is in the +2 oxidation state. It is used in various applications such as agriculture, electroplating, and as a laboratory reagent.

Copper(I) oxide (Cu2O): It is a red crystalline compound in which copper is in the +1 oxidation state. It is used as a pigment, in solar cells, and as a catalyst.

Copper(II) chloride (CuCl2): It is a greenish-brown solid compound in which copper is in the +2 oxidation state. It is utilized in various chemical processes, including etching and catalyst synthesis.

Copper(II) nitrate (Cu(NO3)2): It is a blue crystalline compound where copper is in the +2 oxidation state. It is commonly used in the production of catalysts, as a coloring agent, and in electroplating.

These are just a few examples of copper compounds with different oxidation states and properties. It's important to note that the compound CuI2 mentioned in the question, if it exists, would be an exception to the typical nomenclature for copper compounds.

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Answer:

Explanation:

Just saw your request regarding answering this so here it is:

All of them belong of Group 1 in periodic table and thus are highly reactive! Pattern of reactivity for Group 1 (Alkali metals) increases as you move down the group as their radius keeps increasing and thus electrons can be easily lost. Thus, to ID the lumps, Sheena should look at their reactivity and she should get the following trend:

Most reactive: Potassium (K)

Intermediate: Sodium (Na)

Least reactive: Lithium (Li)

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Answer:

1(a) Second order

1(b) 44.0 minutes

2(a) Ea, forward = 85.6 kJ/mol

Ea, reverse = 60.1 kJ/mol

3) k = 9.47 M⁻¹s⁻¹

Explanation:

1(a) We are given mass of product vs time.  We need to find the concentration of reactant.

For example, at t = 0 min, there is 0 g of product.  Therefore, there is 22.9 g − 0 g = 22.9 g of reactant.  The molar mass is 60 g/mol, so there is (22.9 g) / (60 mol/g) = 0.382 mol.  The volume is 1.0 L, so the concentration is (0.382 mol) / (1.0 L) = 0.382 M.

Next, we'll graph [A] vs time, ln[A] vs time, and 1/[A] vs time.

From the graphs, we can see that 1/[A] is linear.  That means the reaction is second order.

1(b) The slope of the line is equal to the rate constant k.

k = 0.0596 M⁻¹min⁻¹

The half life is:

t = 1/(k [A₀])

where [A₀] is the initial concentration of reactant.

t = 1 / (0.0596 M⁻¹min⁻¹ × 0.382 M)

t = 44.0 min

(Notice the mass of product approximately doubles from t = 20 min to t = 45 min.  This confirms that the half life is about 44 minutes.)

2(a) To make an Arrhenius graph, we need to graph ln(k) vs 1/T, where T is temperature in Kelvin.  We'll make two graphs, one for ka (the forward reaction) and one for kb (the reverse reaction).

The slope of each line is -Eₐ/R, where R is the gas constant.  For the forward reaction:

Eₐ = -8.314 × -10300 = 85,600 J/mol = 85.6 kJ/mol

For the reverse reaction:

Eₐ = -8.314 × -7227.6 = 60,100 J/mol = 60.1 kJ/mol

2(b) Make a graph showing the energy changes as the reaction goes from the reactants to the products.  The difference between the reactants and the highest point is the forward activation energy.  The difference between the products and the highest point is the reverse activation energy.

3) Like problem #1, we're going to graph [A], ln[A], and 1/[A] vs time.

Once again, 1/[A] vs t is linear, so this is a second order reaction.

The rate constant is the slope of this line, so k = 9.47 M⁻¹s⁻¹.

Answer:

see below

Explanation:

K.E. = 1/2 * m * v^2

      = 1/2 * 2 * 5^2     j

Answer:

Fine chemicals are used as starting materials for specialty chemicals, particularly pharmaceuticals, biopharmaceuticals and agrochemicals. ... The term "fine chemicals" is used in distinction to "heavy chemicals", which are produced and handled in large lots and are often in a crude state.

Explanation:

The price of lithium ion batteries is a significant drawback. They typically cost about 40% more to produce than nickel-cadmium cells.

Rechargeable batteries for cell phones, computers, digital cameras, and electric vehicles are the most significant applications for lithium. Many non-rechargeable batteries for devices like heart pacemakers, toys, and clocks also include lithium.

With 8 million tons, Chile possesses the largest known lithium resources in the world. In comparison, Russia (1.2 million tons), Australasia (2.7 million tons), and Argentina (2 metric tons) are all ahead of the South American country (1 million tons). Compared to the rest of Europe, Portugal has fewer of the expensive raw materials.

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Answer:

The solar system formed from a cloud of gas and dust, known as the solar nebula, that collapsed under its own gravity about 4.6 billion years ago. As the solar nebula collapsed, it formed a spinning disk of gas and dust, with most of the material concentrated at the center. Over time, the material in the disk began to clump together due to gravity, forming small rocky and icy planetesimals, which collided and merged to form larger bodies. These larger bodies eventually became the planets, moons, asteroids, and other objects that make up the solar system today. The exact composition of the solar nebula and the materials that formed the solar system varied depending on the distance from the Sun and the temperature and pressure conditions in different regions of the nebula. Generally, the inner solar system (including the Sun, Mercury, Venus, Earth, and Mars) is composed mostly of rocky materials, while the outer solar system (including the gas giants Jupiter, Saturn, Uranus, and Neptune, as well as the dwarf planet Pluto) is composed mostly of ices, such as water, ammonia, and methane, as well as gases like hydrogen and helium.

short term answer: dust and gas.

Explanation: learned it in 5th grade science class, bye have a great day !

Based on the provided steps, we are conducting an experiment involving copper(II) sulfate solution and zinc powder. We are measuring the temperature change that occurs when zinc reacts with copper(II) sulfate.

Measurement:

Initial temperature (°C): This is the temperature of the copper(II) sulfate solution before adding zinc powder. Use a thermometer to measure and record this temperature.

Final temperature (°C): This is the highest temperature reached by the solution after adding the zinc powder and allowing the reaction to occur. Watch the thermometer for a couple of minutes and record the highest temperature observed.

Temperature change (°C): Calculate the difference between the initial and final temperatures. Subtract the initial temperature from the final temperature and record the result as the temperature change.

Follow the steps provided to carry out the experiment and record the corresponding measurements in the table. Make sure to use the pipette to transfer 10 milliliters of copper(II) sulfate solution to test tube 3, then add 0.25 grams of zinc powder to the test tube.

Monitor the temperature using a thermometer and record the initial and final temperatures accurately. Finally, calculate the temperature change by subtracting the initial temperature from the final temperature and record the value in the table.

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Answer:

1.67 ×10^-24g

Explanation:

counting from the first digit after the point till I got to the first non zero digit

Answer:

Refer to the picture. I managed to solve a few.

In the carbon dioxide molecule has four shared pairs of electrons, there will be four covalent bonds created, hence option B is correct.

In organic chemistry, covalent bonds are far more prevalent than ionic ones. Two nuclei are simultaneously drawn to one or more pairs of electrons to form a covalent connection. Bonding electrons are those that are present between the two nuclei.

When atoms share electron pairs, covalent bonding results. Atoms create covalent bonds with one another in order to build a complete electron shell, which increases stability.

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The major properties of matter are volume, mass, and shape.

All matter however too is made up of tiny particles known as atoms.

Other characteristics properties of matter which can be measured include object's density, color, length, malleability, melting point, hardness, odor, temperature, and others

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The property of matter should be volume, mass, and shape.

The following information should be considered:

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The statement is correct. The photoelectric effect refers to the phenomenon where electrons are ejected from the surface of a material when it is exposed to light. The frequency of light striking an electron in a metal must be above the threshold frequency in order for the photoelectric effect to occur.

The statement is correct. The photoelectric effect refers to the phenomenon where electrons are ejected from the surface of a material when it is exposed to light. However, for the photoelectric effect to occur, the frequency of the incident light must be above a certain threshold frequency.

The threshold frequency is the minimum frequency of light required to dislodge electrons from the material. Below this threshold frequency, regardless of the intensity or duration of the light, no electrons will be emitted.

This behavior can be explained by the particle-like nature of light, where light is composed of discrete packets of energy called photons. The energy of a photon is directly proportional to its frequency. Only photons with energy greater than or equal to the binding energy of the electrons in the material can dislodge them.

Therefore, the frequency of light striking an electron in a metal must be above the threshold frequency in order for the photoelectric effect to occur.

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Answer:

move or looker deeper underground for watee