Why would Pluto be colder than all of the other planets?​

Answer: it is group1 or group 3 on god

Explanation:

Mine tailings contain sulphide, which harms fish and other aquatic organisms.

Fish can swiftly perish from hydrogen sulfide's extreme toxicity. Fish that are exposed experience an increase in secondary bacterial, parasitic, and fungal infections as well as a possible premature demise. Water-life is harmed by hydrogen sulfide, a poisonous gas, especially when it is unionized. It might naturally occur at concentrations that are harmful to fish reproduction and survival (Colby and Smith, 1967). The materials left over after an ore is separated into its valuable and economically unviable components are known as tailings in the mining industry. The materials left over after an ore is separated into its valuable and economically unviable components are known as tailings in the mining industry.

Learn more about Sulfide

brainly.com/question/12856403

#SPJ4

Answer:

8

Explanation:

Answer:

The explanation of the type of situation would be characterized below.

Explanation:

Metallic bonding produces a material that, when solid, may conduct electricity.

The passage of electrons determines the conductance of electricity. Atoms and molecules in the crystal lattice are arranged in a certain way in the solid state with the help of metallic bonding. Therefore, the electrons shouldn't be permitted to travel at all. The solids must be in a constant condition since they cannot carry electricity. However, certain solid substances do carry electricity.

Conductors are solid substances that have the ability to conduct electricity. This group includes the metals. The delocalized electrons are what give this material such a high conductivity. The flux of electrons affects conductance. Metals have relatively loosely bonded valence electrons that are simple to remove from their orbitals. They boost the conductivity by producing an ocean of electrons.

Learn more about Metallic here:

https://brainly.com/question/29762857

#SPJ4

The total energy required to heat 38.0 g of liquid water from 55 °C to 100 °C and change it to steam at 100 °C is 94.4 kJ.

First, let's break the problem into two parts:

1. Heating the liquid water from 55 °C to 100 °C

2. Changing the liquid water to steam at 100 °C

For part 1, we can use the formula:

Q = m * c * ΔT

Where Q is the amount of heat energy required, m is the mass of the water, c is the specific heat capacity of water, and ΔT is the change in temperature.

Plugging in the values we have:

Q = 38.0 g * 4.18 J/goC * (100 °C - 55 °C)

Q = 8,692.4 J

This tells us that it takes 8,692.4 J of energy to heat the water from 55 °C to 100 °C.

For part 2, we need to find the energy required to change the water to steam. This is known as the molar heat of vaporization, which is the amount of energy required to turn one mole of a substance from a liquid to a gas.

The molar heat of vaporization of water is 40.6 kJ/mol. We need to figure out how many moles of water we have so we can use this value.

To do this, we can use the molar mass of water, which is approximately 18 g/mol.

38.0 g / 18 g/mol = 2.11 mol

So we have 2.11 moles of water.

Now we can use the formula:

Q = n * ΔH

Where Q is the amount of energy required, n is the number of moles of water, and ΔH is the molar heat of vaporization.

Plugging in the values we have:

Q = 2.11 mol * 40.6 kJ/mol

Q = 85.7 kJ

This tells us that it takes 85.7 kJ of energy to change 38.0 g of water to steam at 100 °C.

To find the total energy required, we can add the energy required for part 1 and part 2:

Total energy = 8,692.4 J + 85.7 kJ

Total energy = 94.4 kJ

If I lift 20 kilogram weight over my head ten times, then I have lifted 200 kilograms.

According to the question, each of the weight has a mass of 20 kilogram.

I have to lift this weight over my head ten times. Now i want to measure the total weight that i have lifted to the correct number of significant figures.

This now becomes; 20 kilogram * 10 = 200 kilograms.

Learn more; https://brainly.com/question/10850346

Answer:le système international d’unite(SI)

Explanation:

The kinetic energy is 0.5177 × 10⁻²¹ J more at 50°C compared to 25°C.

The average kinetic energy of a molecule is directly proportional to the absolute temperature of a gas.

KE = ( 3/2 ) ( R / Nₐ ) T

Where T is the temperature of the molecule, R is the gas constant, and Nₐ is Avogadro's number.

Now, R = 8.314 J/mol.K

Avogadro's number, Nₐ = 6.022 × 10²³ atoms/ mol

The average kinetic energy at 50° C is:

T = 50° C = 323 K

KE₁ = ( 3/2 ) × ( R / Nₐ ) × T₁

KE₁ = ( 3 × 8.314 × 323 ) / ( 2 × 6.022 × 10²³ )

KE₁ = 668.90 × 10⁻²³ J

KE₁ = 6.6890 × 10⁻²¹ J

The average kinetic energy at 25°C is:

KE₂ = ( 3/2 ) × ( R / Nₐ ) × T₂

KE₂ = ( 3 × 8.314 × 298 ) / ( 2 × 6.022 × 10²³ )

KE₂ = 617.13 × 10⁻²³ J

KE₂ = 6.1713 × 10⁻²¹ J

Now,

The average kinetic energy of the molecules at 50° C compared to 25° C is:

KE = KE₁ - KE₂

KE = 6.6890 × 10⁻²¹ - 6.1713 × 10⁻²¹

KE = 0.5177 × 10⁻²¹ J

Hence, the average kinetic energy is 0.5177 × 10⁻²¹ J more at 50° C compared to 25° C.

Learn more about kinetic energy here:

https://brainly.com/question/8101588

#SPJ9

Answer:

As molecules move more quickly, temperature increases.

Explanation:

Kinetic energy can be defined as an energy possessed by an object or body due to its motion.

Any material or object that allow the conduction (transfer) of electric charge or thermal energy is generally referred to as a conductor. Some examples of a conductor are metals, copper, aluminum, graphite, etc.

In the process of heat conduction, thermal energy is usually transferred from fast moving particles to slow moving particles during the collision of these particles. Also, thermal energy is typically transferred between objects that has different degrees of temperature and materials (particles) that are directly in contact with each other but differ in their ability to accept or give up electrons.

Hence, the relationship between temperature and kinetic energy is that as molecules move more quickly, temperature increases due to the absorption of heat.

In the single-displacement reaction between zinc and hydrochloric acid solution, the temperature typically increases, and the pressure may also increase.

When zinc (Zn) is added to a hydrochloric acid (HCl) solution, a chemical reaction takes place. The zinc reacts with the hydrochloric acid to form zinc chloride (ZnCl2) and hydrogen gas (H2). This reaction is exothermic, meaning it releases heat energy.

The release of heat energy during the reaction causes an increase in temperature in the immediate vicinity of the reaction mixture. The temperature rise can be observed by measuring the temperature of the solution or feeling the container if it is not insulated.

As the reaction proceeds, hydrogen gas is produced. If the reaction takes place in a closed container, such as a sealed flask or test tube, the production of gas can lead to an increase in pressure within the container. The pressure increase is a result of the accumulation of gas molecules in a confined space.

It is important to note that the magnitude of the temperature and pressure changes depends on the specific conditions of the reaction, such as the concentration of the acid and the amount of zinc used. The reaction rate and extent of temperature and pressure changes can be influenced by various factors, including the reaction vessel size, presence of catalysts, and reaction stoichiometry.

Learn more about single-displacement visit:

https://brainly.com/question/7959057

#SPJ11

To determine the time it takes to form 0.20 moles of O2, we need to first find the initial concentration of NO2 and the final concentration of NO2 after the reaction.
Initial concentration of NO2 = (0.50 moles) / (1.00 L) = 0.50 M

Reporting the answer to 2 significant figures, the time it takes to form 0.20 moles of O2 is 1.6 s.

To solve this problem, we need to use the rate law equation and the given values to calculate the time required to form 0.20 moles of O2. The rate law equation for this reaction is rate = k [NO2]^2.
First, we need to calculate the initial concentration of NO2 in the reaction vessel. Since the vessel contains 1.00 L of gas and 0.50 moles of NO2, the initial concentration of NO2 is 0.50 M.
Next, we can use the rate law equation to calculate the rate of the reaction at the initial concentration of NO2:
rate = k [NO2]^2
rate = 0.25 M-1 s-1 x (0.50 M)^2
rate = 0.0625 M/s
To form 0.20 moles of O2, we need to calculate the time required at this rate:
0.20 moles O2 / 2 moles NO2 = 0.10 moles NO2 used
0.10 moles NO2 / (0.0625 M/s) = 1.6 s
Therefore, it would take 1.6 seconds (reported to 2 significant figures) to form 0.20 moles of O2 in the reaction vessel.
To know more about significant figures visit:

https://brainly.com/question/23396760

#SPJ11

Answer:

Light vs electron

Explanation:

Light Microscope vs Electron Microscope. Light microscopes and electron microscopes both use radiation - in the form of either light or electron beams, to form larger and more detailed images of objects (e.g. biological specimens, materials, crystal structures, etc.) than the human eye can produce unaided.

Answer:

They all produce H+ ions in solution, making them acids.

Answer:

That means that mixture is HeteroGeneous.

Explanation:

Hope this Helps!

Answer:

Outside or External

Explanation:

Take for example, an Exothermic reaction. This just means that the reaction releases heat to the outside.

Answer:

It means out of, away from, outer, external, outside, or exterior.

Explanation:

Hope this helps!

Brainliest if correct pls

Answer:

In physics, the law of conservation of energy states that the total energy of an isolated system cannot change—it is said to be conserved over time. ... Energy can be neither created nor destroyed, but can change form; for instance, chemical energy can be converted to kinetic energy.

Explanation:

Answer:

if u combined them itd would be BN

Answer: B) the forces in the solid hold the atoms tightly in place

Explanation:This is because there is no room for the atoms to move around much and because they are very close together which makes the phase a solid.

Answer:

-3169

Explanation:

trust the process

-3169 kJ/mol is the enthalpy of combustion when 1 mol \(C_6H_6(g)\) completely reacts with oxygen.

Explanation:

Given:

The reaction of combustion of \(C_6H_6(g)\) along with enthalpies of formation of the compounds.

To find:

The enthalpy of combustion when 1 mol \(C_6H_6(g)\)  completely reacts with oxygen.

Solution:

\(2C_6H_6(g) + 15O_2(g) \rightarrow 12CO_2(g) + 6H_2O(g)\)

Enthalpy of the reaction:

\(\Delta H^o_{rxn}=\sum [\Delta H^o_{f,products}]-\sum [\Delta H^o_{f,reactants}]\\=[12mol\times \Delta H^o_{f.CO_2(g)}+6mol\times \Delta H^o_{f,H_2O(g)}]-[2 mol\times \Delta H^o_{f.C_6H_6(g)}+15\times \Delta H^o_{f,O_2(g)}]\\=[12mol\times (-393.50 kJ/mol)+6mol\times (-241.82 kJ/mol)]-[2mol\times 82.90kJ/mol+15mol\times 0 kJ/mol]\\=-6338.72 kJ\)

\(2C_6H_6(g) + 15O_2(g) \rightarrow 12CO_2(g) + 6H_2O(g).\Delta H^o_{rxn}=-6338.72 kJ\)

When 1 mole of \(C_6H_6(g)\)  reacts with oxygen gas:

\(=\frac{\Delta H^o_{rxn}}{\text{2 mol of } C_6H_6}\\=\frac{-6338.72 kJ}{2 mol}\\=-3169.36 kJ/mol\approx -3169 kJ/mol\)

-3169 kJ/mol is the enthalpy of combustion when 1 mol \(C_6H_6(g)\) completely reacts with oxygen.

Learn more about enthalpy of combustion here:

brainly.com/question/10583725?referrer=searchResults

brainly.com/question/4075722?referrer=searchResults

Answer:

Structure of boron trifluoride, an example of a molecule with trigonal planar geometry.

Explanation:

We know the standard reduction potentials of the half-cells involved, so we can find the cell voltage and the spontaneous reaction. Thus;

The anode reaction is:

Pb(s) → Pb2+(aq) + 2e-

This is the oxidation half-reaction that occurs in the Pb half-cell.

The cathode reaction is:F2(g) + 2e- → 2F-(aq).

This is the reduction half-reaction that occurs in the F2 half-cell.

The spontaneous cell reaction is

:Pb(s) + F2(g) → Pb2+(aq) + 2F-(aq).

This is the combination of the oxidation and reduction half-reactions, with the electrons canceled out from both sides.

The cell voltage is 2.996 V The standard cell potential is calculated as follows:

standard cell potential = E°(reduction) - E°(oxidation)standard cell potential = 2.870 V - (-0.126 V)standard cell potential = 2.996 V, The cell voltage is positive, indicating that the reaction is spontaneous.

To know more about oxidation half-reaction visit;

https://brainly.com/question/12686471

#SPJ11

Answer:

2.5 g of platinum

Explanation:

Recall that a catalyst is a specie added to a reaction system to increase the rate of reaction. A catalyst does not participate in the chemical reaction hence it remains unchanged at the end of the chemical reaction. A catalyst merely provides an alternative reaction pathway by lowering the activation energy of the reaction system. Hence a catalysed reaction usually proceeds faster with less energy requirement than the uncatalysed reaction.

Since the catalyst does not participate in the reactions and remains unchanged at the end of the reaction, the mass of platinum will remain the same (2.5g). The mass can only change if a specie participates in the chemical reaction. Hence the answer.

2.5 g of platinum will there be left in the vessel at the end of the reaction

The following information should be considered:

learn more: https://brainly.com/question/2514933?referrer=searchResults

The elements Bromine(Br) and Sulphur(S) undergo changes in oxidation number in the given reaction.

Given reaction:

\(2H_2SO_4(aq) + 2NaBr(s) - > Br_2(l) + SO_2(g) + Na_2SO_4(aq) + 2H_2O(l)\)

The elements that undergo changes in oxidation number are:

Bromine (Br):

In NaBr, the oxidation number of Br is -1.

In \(Br_2\), the oxidation number of Br is 0.

Sulfur (S):  

In \(H_2SO_4\), the oxidation number of S is +6.

In \(SO_2\), the oxidation number of S is +4.

All other elements in the reaction (H, O, Na) maintain a consistent oxidation number throughout the reaction.

To know more about oxidation number, refer here:

https://brainly.com/question/29100691

#SPJ4

Answer:

B) 22 atoms

Explanation:

Aluminum Acetate has a formula of C6H9AlO6, meaning that it has 6 Carbon atoms, 9 Hydrogen atoms, 1 Aluminum atom, and 6 Oxygen atoms.

In total there are: 6+9+1+6 atoms, or a total of 22 atoms.

Hope this helps!

Answer:

The molecular or chemical formula of Aluminium Acetate is C6H9AlO6.

6-carbon atoms

9-hydrogen atoms

6-oxygen atoms

1-aluminium atom

b. 22 is the right answer

If for this ion, the nitrate ligands produce a very strong crystal field, 2 unpaired electrons are there in the complex ion [Co(NO\(_{3}\))\(^{6}\)\(]^{4-}\). Option c.

The complex ion [Co(NO\(_{3}\))\(^{6}\)\(]^{4-}\) has a coordination number of 6, meaning that it has 6 ligands attached to the central cobalt ion. The nitrate ligands produce a strong crystal field, causing the d-orbitals to split into two sets of three. According to Hund's rule, electrons will first fill up the lower-energy set of orbitals before pairing up in the higher-energy set.  Since there are 4 electrons in the d-orbital of cobalt, we can fill up the lower-energy set with 1 electron in each orbital, leaving 2 unpaired electrons in the higher-energy set. Therefore, the answer is (c) 2 unpaired electrons.

More on electrons: https://brainly.com/question/29656941

#SPJ11

A ionic bond will form between potassium and chlorine.

Potassium (K) has one valence electron, while chlorine (Cl) has seven valence electrons. In order to achieve a stable electron configuration, potassium will donate its valence electron to chlorine, forming a positively charged potassium ion (K+) and a negatively charged chloride ion (Cl-). The opposite charges of the ions attract each other, forming an ionic bond.

This bond is relatively strong and requires a large amount of energy to break, making potassium chloride (KCl) a stable compound at room temperature and pressure. Ionic bonds are common between elements with large differences in electronegativity, where one element donates an electron to the other to achieve a stable configuration.

To know more about potassium, here

brainly.com/question/14989117

#SPJ4

Answer:

lithosphere

Explanation:

Earth's interior layers are ordered by density. The densest layer is the solid metal inner core, the mantle is of intermediate density, and the least dense layer is the lithosphere, particularly the continental lithosphere.

The crust is the layer of the earth with the lowest density.

The crust is the rock layer that is the lightest and most buoyant on Earth. 41% of the Earth's surface is covered by continental crust, with a quarter of that covered by ocean floor. The thickness of the continental crust is 20 to 80 kilometers. Four billion years of Earth's history are stored in its rocks.

The crust is the outermost layer of the Earth, and it is only about 5-70 km deep. The mantle is the layer beneath the crust, which is about 2,900 km thick and has a thickness that varies. The core is divided into two sections: the inner core, which is solid, and the outer core, which is liquid. The Earth's surface is made up of several plates, which are continuously changing due to forces within the Earth.

Know more about crust:

https://brainly.com/question/13428623

#SPJ6