Which type of radiation has the greatest penetrating power.

Answer:

Winter

Explanation:

Answer:

winter

Explanation:

because it is away from the sun

Answer:

Nuclear power plants use heat produced during nuclear fission to heat water. In nuclear fission, atoms are split apart to form smaller atoms, releasing energy. Fission takes place inside the reactor of a nuclear power plant. At the center of the reactor is the core, which contains uranium fuel

Explanation:

Answer:

b. cost to implement conservation policies

Explanation:

Answer: Urbanization implications

Environmental implications

Benefit vs The cost

Explanation:

Conservation involves preservation of organisms and their natural habitat to encourage biodiversity and reduces the risk of extinction.

Urbanization involves the loss of organism’s natural habitat due to deforestation and building of more structures such as buildings and road structures. Government must consider before passing conservation policies if the urbanization will have a bigger impact than conservation.

Environmental implications is also taken into account as the environment is where we live and makes it very important to ensure there are no negative effects.

The benefit and cost are weighed and the one with a lower cost and higher benefit is usually embraced.

0.0146 g of sodium chloride should be added to 250.0 mL of 0.25 M aqueous solution of ammonia to produce a solution of pH 10.70.

\(NH_4\)+ + Cl- → \(NH_3\)+ HCl

For every mole of ammonium ion, one mole of sodium chloride is required. The number of moles of ammonium ion in 250.0 mL of 0.25 M solution is:

moles \(NH_4\)+ = (1.0 x \(10^{-3\) M)(0.250 L) = 2.5 x \(10^{-4\) moles

Therefore, the mass of sodium chloride required is:

mass NaCl = (2.5 x \(10^{-4\) moles)(58.44 g/mol) = 0.0146 g

pH is a measure of the acidity or alkalinity of a solution in physics. It is defined as the negative logarithm (base 10) of the concentration of hydrogen ions (H+) in a solution. A solution with a pH of 7 is considered neutral, indicating that it has an equal concentration of hydrogen ions and hydroxide ions (OH-). Solutions with a pH less than 7 are considered acidic, meaning that they have a higher concentration of hydrogen ions, while solutions with a pH greater than 7 are considered alkaline or basic, indicating a higher concentration of hydroxide ions.

The pH scale is logarithmic, which means that each whole number change in pH represents a ten-fold difference in the concentration of hydrogen ions. For example, a solution with a pH of 3 has ten times more hydrogen ions than a solution with a pH of 4, and 100 times more than a solution with a pH of 5. pH is an important concept in many areas of physics, including electrochemistry, biochemistry, and environmental science. Accurate measurement of pH is critical in many laboratory procedures, such as titrations and enzyme assays, and is also important in understanding the behavior of natural and engineered systems, such as soils, water bodies, and industrial processes.

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Explanation:Mg(s)+Zn(NO3)2(aq) → Mg(NO3)2(aq)+Zn(s)

A renewable fuel called ethanol is created from various plant elements known as "biomass."

Thus, Ethanol is used to oxygenate more than 98% of the gasoline sold in the United States. E10 (10% ethanol, 90% gasoline) is typically added to gasoline, which lowers air pollution.

Ethanol is also available in the form of E85 (also known as flex fuel), which can be used in vehicles that can run on any gasoline and ethanol mixture up to an 83% concentration.

Since ethanol has a greater octane rating than gasoline, it offers superior mixing qualities. Engine knocking is prevented and drivability is ensured by minimum octane number regulations for fuel.

Thus, A renewable fuel called ethanol is created from various plant elements known as "biomass."

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Answer:

Because something at absolute zero would have no kinetic energy, and atoms can never stop vibrating.

Explanation:

If something were to reach absolute zero, that means that the particles would reach a position were we are able to detect precisely their velocity and position in the atom.

This cannot be possible because it would violate Heisenberg's Uncertainty Principle, which in brief states that we can measure the velocity of electron but we would be uncertain about the position and vice versa. We cannot predict both velocity and position accurately.

Answer:

Im assuming a glass of water

Explanation:

there is less water that needs to be heated up

The assertion, "Baking soda can be manufactured from nacl, H2O, CO2 and NH3" is: correct, and the reason, "Washing soda can be manufactured by heating baking soda." is: also correct and provides a logical explanation for the assertion.

Baking soda (sodium bicarbonate, NaHCO3) can indeed be manufactured from the combination of NaCl (sodium chloride), H2O (water), CO2 (carbon dioxide), and NH3 (ammonia).

The process involves several steps.

First, ammonia (NH3) is reacted with carbon dioxide (CO2) to form ammonium carbonate (NH4)2CO3.

Next, ammonium carbonate is further reacted with sodium chloride (NaCl) and water (H2O) to produce sodium bicarbonate (NaHCO3), also known as baking soda.

This reaction results in the formation of ammonium chloride (NH4Cl) as a byproduct. The overall reaction can be represented as follows:

2NH4Cl + CO2 + H2O + NaCl → 2NaHCO3 + NH4Cl

The reason provided states that washing soda can be manufactured by heating baking soda, which is also correct.

Heating baking soda (NaHCO3) drives off carbon dioxide (CO2) and results in the formation of sodium carbonate (Na2CO3), commonly known as washing soda. The reaction can be represented as follows:

2NaHCO3 → Na2CO3 + H2O + CO2

Therefore, the reason complements the assertion by explaining a subsequent transformation of baking soda into washing soda through a thermal decomposition reaction.

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Baking soda can be produced from sodium chloride, water, carbon dioxide, and ammonia. It reacts with an acid in baking, leading to gas formation which makes the batter 'rise'. Baking soda can then be converted into washing soda by heating.

The process of producing baking soda (sodium bicarbonate) involves a series of chemical reactions involving nacl (sodium chloride), h2o (water), co2 (carbon dioxide), and nh3 (ammonia). The resultant baking soda can then be converted into washing soda, another useful household substance, through heating. This is a classic example of acid-base chemistry.

When it comes to baking, baking soda reacts with an acid (like lemon juice or buttermilk) in batter, leading to the formation of bubbles of carbon dioxide from the decomposition of the resulting carbonic acid. The release of this gas causes the batter to 'rise' which is a crucial part of baking.

Furthermore, baking soda can be used as an ingredient in cleaning agents, toothpaste, and antacids due to its chemical properties. Therefore, the statement made in your question is indeed accurate: these substances can be manufactured from the given ingredients using chemistry.

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Answer:

a reaction in which oxidation numbers change

Explanation:

here you go happy to help

Answer: Yes because that's when they form a compound

Answer:

Para que se cumpla el balanceo en la reacción química, en el espacio se debe asignar 2 como coeficiente estequiométrico.

Explanation:

La ley de conservación de la materia establece que, dado que no se puede crear ni destruir ningún átomo en una reacción química, el número de átomos que están presentes en los reactivos debe ser igual al número de átomos presentes en los productos.

Luego, debes equilibrar la ecuación química. Para eso, primero debe mirar los subíndices al lado de cada átomo para encontrar el número de átomos en la ecuación. Si el mismo átomo aparece en más de una molécula, debes sumar sus cantidades.

Los coeficientes ubicados frente a cada molécula indican la cantidad de cada molécula para la reacción. Este coeficiente puede modificarse para equilibrar la ecuación, del mismo modo que nunca debe alterar los subíndices.

Al multiplicar el coeficiente mencionado por el subíndice, obtienes la cantidad de cada elemento presente en la reacción.

En este caso la reacción química es:

Fe₂O₃ + 3 H₂O ⇒ ____ Fe(OH)₃

Entonces, teniendo en cuenta todo lo anterior, se puede determinar la cantidad de elementos en cada lado de la ecuación:

Se puede observar que la reacción química no esta balanceada porque se tiene diferentes cantidades de cada elemento a cada lado de la reacción. Para equilibrarla, se comienza balanceando el hierro. Para eso, el coeficiente estequiométrico debe ser dos:

Fe₂O₃ + 3 H₂O ⇒ 2 Fe(OH)₃

Entonces:

Ahora, a cada lado de la reacción se tiene la misma cantidad de cada elemento, por lo que la reacción esta balanceada.

Para que se cumpla el balanceo en la reacción química, en el espacio se debe asignar 2 como coeficiente estequiométrico.

Answer: The new volume of the gas is smaller.

Explanation:

Volume and pressure are inversely proportional (as one goes up, one goes down). So as you increase the pressure, you decrease the volume.

The pressure of a fixed mass of gas is increased from 100 kPa to 600 kPa at a constant temperature. The new volume of the gas is smaller than the initial volume.

Boyle's Law states that for a given amount of gas at constant temperature and mass, the pressure and volume of the gas are inversely proportional. In other words, when the pressure of a gas increases, its volume decreases, and when the pressure decreases, its volume increases.

Mathematically, Boyle's Law can be expressed as:

P₁ * V₁ = P₂ * V₂

Where:

P₁ and P₂ are the initial and final pressures, respectively.

V₁ and V₂ are the initial and final volumes, respectively.

Boyle's Law is particularly important when studying gases, as it helps us understand how changes in pressure and volume affect the behavior of gases. It is essential for various applications, including in the design of engines, gas compressors, and other systems where gas behavior plays a crucial role.

In this question, as the pressure of the fixed mass of gas is increased from 100 kPa to 600 kPa while the temperature and amount of gas remain constant, the volume of the gas will decrease. However, we can confidently say that the new volume will be smaller than the initial volume due to the increase in pressure, as per Boyle's Law.

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Answer:

the answer is stimilus!

Explanation:

Answer

47.73 g CuO

Explanation

Given:

Chemical equation: 3CuO+ 2H3PO4 = Cu3(PO4)2 + 3H20

mass of orthophosphate acid (Cu3(PO4)2) = 39.2 g

Required: The mass of CuO

Solution:

Second method:

Step 1: Find the moles of H3PO4

n = m/M where m is the mass and M is the molar mass of H3PO4

n = 39.2g/97.994g.mol^-1

n = 0.400 mol

Step 2: Use the stoichiometry to find the moles of CuO

The molar ratio between CuO and H3PO4 is 3:2

Therefore the moles of CuO = 0.400 mol x (3/2) = 0.600 mol

Step 3: Find the mass of CuO, now that we have moles

m = n x M m is the mass, n is the moles and M is the molar mass

m = 0.600 mol x 79,545 g/mol

m = 47.73 g

Explanation:

2 KOH (aq) + H2SO4 (aq) →K2SO4 (aq) + 2 H2O (l)

Answer: 4.5165 *10^-23 moles Carbon

Explanation:

There are 6.022*10^23 atoms in a mole.

Therefore, there would be 6.022*10^-23*0.75 atoms in 0.75 moles of Carbon.

= 4.5165 *10^-23 moles Carbon

Answer: 4.5165 *10^-23 moles Carbon

Explanation:

There are 6.022*10^23 atoms in a mole.

Therefore, there would be 6.022*10^-23*0.75 atoms in 0.75 moles of Carbon.

= 4.5165 *10^-23 moles Carbon

Answer:

firstly:scientist communicate with each other to share what they learn

secondly; they question and check each other's work

Answer:

Forming a hypothesis

Explanation:

Cuz why not

Beer's law, also known as the Beer-Lambert law, is a relationship between the concentration of a solute in a solution and the amount of light it absorbs. It is commonly used to determine the concentration of a solute in a solution by measuring the absorbance of light at a specific wavelength.

When the concentration of a solute in a solution is too high, the solute particles can interact with each other, forming clusters or aggregates. These clusters can affect the way that the solution absorbs light, leading to deviations from Beer's law.

At high concentrations, the solute particles can scatter the light instead of absorbing it. This scattering effect can cause the absorbance to be lower than expected, leading to a lower than predicted concentration.

Additionally, the clusters of solute particles can interact with the solvent molecules, changing the refractive index of the solution. This can also lead to deviations from Beer's law.

As a result, when creating a calibration curve for a solute, it is important to include a range of concentrations that are representative of the expected concentration range of the samples being analyzed.

Including higher concentrations in the calibration curve can help to account for deviations from Beer's law that occur at high concentrations. However, it is important to note that the linearity of the calibration curve may be affected at higher concentrations. This can lead to errors in the prediction of sample concentrations at higher concentrations.

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The positively charged center in an atom is called as Nucleus. It is made up of positively charged protons and neutral sub-atomic particle called as neutrons.

What is meant by protons ?

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Answer:

stay the same.

Explanation:  Period 3 consists of the full 1s, 2s, and 2p electron orbitals, plus the 3s and 3p valence orbitals, which are filled with a total of 8 more electrons as we move from left (Na) to the far right (Ar):

Na:  1s2 2s2 2p6 3s1

Ar:    s2 2s2 2p6 3s2 3p6

As we move from left to right, and ignoring the already-filled 1s, 2s, and 2p orbitals, the period three starting and ending elements have the following:

Na: 3s1

Ar: 3s2, 3p6

All the new electrons electrons filled the third energy level (3s and 3p).  So the energy level does not change, just the orbitals.

Certain nitrogen atoms contain seven neutrons, whereas others contain eight. Such two varieties of nitrogen have the same isotopes.

The only element that may contain seven protons was nitrogen, having the atomic number 7. Each isotope of nitrogen was represented by the given arrangement. This atom, which has eight neutrons, corresponds to nitrogen-15.

Isotopes have atoms with the same amount of protons but differing numbers of neutrons. They varies in mass, which affects their physical characteristics even when they have nearly identical chemical properties.

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Answer:

Law of conservation of linear momentum :- when there is no any external force applied on a system of particles then , momentum of system of particles will be conserved or you can say that if external force is zero. Then momentum of system of particles in intially = momentum of system of particles in finally

Explanation:

According to Newton's second law of motion, because no external force occurs on the system, The change in momentum is equal to zero; hence, the linear momentum is conserved. The entire linear momentum of an isolated system, that is, a system that is not subjected to any external forces, is conserved.

1. The total amount of momentum of the collection of objects in the system is the same before the collision as after the collision.

2. It must be conserved in an isolated system because isolated systems do NOT exchange matter or energy with their surroundings.

Answer:

Lithosphere plate boundaries are found in that area.

Explanation:

Answer:

C is the right answer

Explanation:

Answer:

I believe it would be Law of conservation of mass (sorry if I'm incorrect)

When soluble mercury compounds get into the water supply, they can pose a serious health risk to humans and wildlife. Aluminum sulfate, also known as alum, is commonly added to the water flowing through treatment plants as a coagulant. Coagulation is a process that involves adding chemicals to the water to make the mercury and other contaminants clump together into larger particles, which can then be more easily removed from the water.

Alum works by creating positively charged aluminum ions, which attract the negatively charged mercury ions in the water. As these ions come together, they form larger particles that can be more easily filtered out of the water. Additionally, alum can also help to remove other contaminants, such as suspended solids, bacteria, and viruses, which can also pose health risks.

Once the mercury and other contaminants have been coagulated and removed from the water, it can then be treated with other chemicals, such as activated carbon or chlorine, to further remove any remaining pollutants and disinfect the water. This ensures that the water is safe for human consumption and does not pose a risk to public health.

In summary, adding aluminum sulfate to water treatment plants helps to remove mercury and other contaminants from the water supply by coagulating the particles and making them easier to filter out. This is an important step in ensuring that the water is safe for human consumption and does not pose a health risk to the public.  

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