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Answer:

See Explanation

Explanation:

a) The word equation is;

silver chlorate + sodium phosphate ------> silver phosphate + sodium chlorate

b) The balanced reaction equation of the reaction is;

3AgClO3(aq) + Na3PO4(aq) ------->Ag3PO4(s) + 3NaClO3(aq)

c) amount of silver chlorate reacted = 287 g/191.319 g/mol = 1.5 moles

3 moles of silver chlorate yields 1 mole of silver phosphate

1.5 moles of silver chlorate yields 1.5 * 1/3 = 0.5 moles of silver phosphate

Amount of sodium phosphate reacted = 52.8 g/163.94 g/mol = 0.3 moles

1 mole of sodium phosphate yields 1 mole of silver phosphate

0.3 moles of sodium phosphate yields 0.3 moles of silver phosphate.

Hence the maximum number of grams mass of silver phosphate produced = 0.3 moles * 418.58 g/mol = 125.6 g

d) The excess reactant is silver chlorate while the limiting reactant is sodium phosphate

e) 3 moles of silver chlorate  reacts with 1 mole of sodium phosphate

  x moles of silver chlorate reacts with 0.3 moles of sodium phosphate

x = 3 * 0.3 = 0.9 moles of silver chlorate reacted

Mass of 0.9 moles of silver chlorate = 0.9 moles * 191.319 g/mol  = 172 g of silver chlorate

Hence mass of silver chlorate left over =  287 g - 172 g = 115 g

Answer: Ionic bonds result from transfer of electrons, whereas covalent bonds are formed by sharing. ... Ionic bonds are electrostatic in nature, resulting from that attraction of positive and negative ions that result from the electron transfer process; charge separation between covalently bonded atoms is less extreme.

Explanation:

A minimum of 2 square feet (ft2) should be left open near the floor and 2 ft2 should be left open towards the ceiling. RCP- 200V 200,000 Reddy Heater Ample ventilation should be provided. Allow at least 6 feet2 of fresh outside air before using the heater.

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1. It is widely expected that greenhouse gas emissions will continue to increase over the next 50 years, primarily due to population growth, industrialization, and increasing energy demands.

2. Alongside rising temperatures, other changes that may occur include shifts in global precipitation patterns, changes in the distribution of species and ecosystems, increased frequency.

3. While current efforts to reduce greenhouse gas emissions are important, it is widely recognized that they may not be sufficient to prevent significant climate change impacts.

4. Addressing climate change requires a multi-faceted approach, involving policy changes, technological advancements, behavioral shifts, and international cooperation.

1.  As a result, global climate will likely continue to warm, leading to various impacts such as rising sea levels, more frequent and intense extreme weather events, shifts in precipitation patterns, and ecosystem disruptions. The exact extent of these changes will depend on several factors, including future emission levels, technological advancements, and policy decisions.

Alongside rising temperatures, other changes that may occur include shifts in global precipitation patterns, changes in the distribution of species and ecosystems, increased frequency and intensity of droughts and heatwaves, melting of glaciers and polar ice caps, and ocean acidification. These changes can have far-reaching consequences for agriculture, water resources, biodiversity, human health, and socio-economic systems.

3. While current efforts to reduce greenhouse gas emissions are important, it is widely recognized that they may not be sufficient to prevent significant climate change impacts.

Additional and more ambitious measures are needed, including transitioning to renewable and cleaner energy sources, improving energy efficiency, adopting sustainable land-use practices, enhancing public transportation, promoting carbon capture and storage technologies, and implementing policies that incentivize emission reductions across various sectors.

4. In addition to reducing dependence on fossil fuels, other solutions to combat greenhouse gas emissions and global warming include promoting sustainable agriculture and land management practices, protecting and restoring forests and other natural carbon sinks, advancing green technologies and innovation.

Enhancing resilience to climate impacts and investing in climate adaptation measures is also crucial to mitigate the risks associated with ongoing changes. Ultimately, addressing climate change requires a multi-faceted approach, involving policy changes, technological advancements, behavioral shifts, and international cooperation.

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Answer:

1). Scientific

2). Plating the diluted bacteria on media that supports the growth of only living micro organisms. Statistically accurate.

Answer:

The equation for percent composition is (mass of element/molecular mass) x 100.

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Methane is a hydrocarbon that is composed of four hydrogen and one carbon atom as shown.

A molecular model refers to a physical, mathematical, or computer-generated representation of a molecule, which can be used to predict its properties and behavior.

Methane can be modeled as per the compound that have been shown in the image that have been attached to the answer that we have in the question here.

It can be shown that a model can help us to be able to conceptualize the molecule.

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Answer:

Methane gas will burn in air. This is an example of a combustion reaction. This type of reaction produces CO2 and H2O.

Explanation:

Elements: C, H, O

Reactants: 1, 4, 2

Products: 1, 2, 3

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The molarity of the aqueous acid, H₂SO₄ solution, given that 19.5 mL of the acid is needed to neutralize 25.9 mL of 0.0266 M LiOH solution is 0.0177 M

We'll begin by obtaining the mole ratio of the acid and based from the balanced neutralization equation for the reaction. This is given below:

H₂SO₄ + 2LiOH —> Li₂SO₄ + 2H₂O

Finally, we shall determine the molarity of the aqueous acid, H₂SO₄ solution. Details below

MaVa / MbVb = nA / nB

(Ma × 19.5) / (0.0266 × 25.9) = 1 / 2

Cross multiply

Ma × 19.5 × 2 = 0.0266 × 25.9

Divide both side by 19.5 × 2

Ma = (0.0266 × 25.9) / (19.5 × 2)

Ma = 0.0177 M

Thus, the molarity of the acid is 0.0177 M

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Answer:

Polar Covalent Bonds. A polar covalent bond exists when atoms with different electronegativities share electrons in a covalent bond. Consider the hydrogen chloride (HCl) molecule. Each atom in HCl requires one more electron to form an inert gas electron configuration.

Explanation:

Answer:

The third one.

Explanation:

It goes from one reactant to two products.

Answer:

Reaction #3

Explanation:

Decomposition reactions always involve a singular reactant being broken down into multiple products, and the only reaction that involves the reactant being separated into multiple substances is the third reaction.

A buffer solution can resist a change in pH even when a strong acid or a strong base is added to it. A buffer solution is made up of a weak acid and its conjugate base, or a weak base and its conjugate acid.A hydrofluoric acid-sodium fluoride buffer solution can be made from hydrofluoric acid and sodium fluoride.

The buffer solution can be calculated as follows: Hydrofluoric acid is a weak acid, with a Ka of 7.1 × 10−4.Moles of Hydrofluoric acid (HF) = 0.30 × VolumefHF = [HF]/V = 0.30 mMoles of sodium fluoride (NaF) = 0.70 × VolumefNaF = [NaF]/V = 0.70 mMoles of Hydrogen Fluoride (H+) = Molarity × Volume = 0.30 × VolumepH = pKa + log ([A-]/[HA])Ka = [H+][A-]/[HA]7.1 × 10−4 = [H+][NaF]/[HF][H+] = 5.3 × 10−4[Naf]/[HF] = 7/3log [NaF]/[HF] = log (7/3) = 0.851pH = pKa + log ([A-]/[HA])pH = 3.86 + 0.851 = 4.71Therefore, the pH of a buffer solution made from equal amounts of 0.30 M hydrofluoric acid and 0.70 M sodium fluoride is 4.71.

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Answer:

fractional distillation

Uno de los componentes del “sal de uvas”, es el bicarbonato de sodio, es un sólido cristalino blanco, debido a su capacidad de neutralizar el exceso de ácido clorhídrico del estómago.

La acidez estomacal es ocasionada por un exceso en la producción de ácido clorhídrico (HCl) en el jugo gástrico del estómago. Uno de los componentes del “sal de uvas”, utilizada como antiácido, es el bicarbonato de sodio (NaHCO₃), es un sólido cristalino blanco, que neutraliza el exceso de ácido clorhídrico. La reacción de neutralización es:

HCl(aq) + NaHCO₃(aq) ⇒ NaCl(aq) + H₂O(l) + CO₂(g)

Uno de los componentes del “sal de uvas”, es el bicarbonato de sodio, es un sólido cristalino blanco, debido a su capacidad de neutralizar el exceso de ácido clorhídrico del estómago.

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The rules scientists will have to follow to give an element a symbol is by verifying it and naming it with a one-, or two-letter symbol which is usually derived from the name of the element.

This is referred to as substance which can't be broken down into simpler units by any form of chemical means.

When an element is discovered by an individual, it is best for it to be verified before it is named by the discoverer. The possible name for the element Jofrofrinium is Jo which is a two letter symbol or it could be J which is referred to as a one letter symbol.

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The sensory process that made Jane perform this action is called "depth perception".

Depth perception is the ability of the brain to perceive the distance of an object and the spatial relationship of objects in our environment. In a 3D movie, the images are presented in a way that creates an illusion of depth, which makes the audience feel like they are part of the scene. When the character in the movie threw a ball towards the audience, Jane's brain interpreted the ball as moving towards her, causing her to instinctively move her head backwards. This is a natural response that is triggered by our brain's sensory process of depth perception.

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Answer:

It blocks pathogens from getting inside our body.

Explanation:

The skin is the biggest organ, it cover the whole body and organ system from any toxic things.

Ions are formed when atoms lose or gai electron in order to fulfill the octet rule

The magnitude of the initial acceleration of the balloon is 19.6 m/s^2.

The magnitude of the initial acceleration of the balloon can be determined using the principle of buoyancy. Buoyancy is the upward force exerted on an object immersed in a fluid (in this case, the enclosed gas inside the balloon) due to the difference in pressure between the top and bottom surfaces of the object. This force is equal to the weight of the fluid displaced by the object.

In this scenario, the balloon is released from a tall building, so it experiences the force of gravity pulling it downwards. The initial acceleration of the balloon can be found by considering the net force acting on it.

The net force on the balloon is the difference between the weight of the balloon (due to its mass) and the buoyant force acting on it. The weight of the balloon can be calculated using the equation:

Weight = mass * gravitational acceleration

Given that the total mass of the balloon is 2.0 kg and the acceleration due to gravity is approximately 9.8 m/s^2, the weight of the balloon is:

Weight = 2.0 kg * 9.8 m/s^2 = 19.6 N

The buoyant force acting on the balloon is equal to the weight of the air displaced by the balloon. This can be calculated using the equation:

Buoyant force = density of air * volume of balloon * gravitational acceleration

The density of air is approximately 1.2 kg/m^3. Substituting the given values, we have:

Buoyant force = 1.2 kg/m^3 * 5.0 m^3 * 9.8 m/s^2 = 58.8 N

Finally, the net force acting on the balloon is:

Net force = Weight - Buoyant force = 19.6 N - 58.8 N = -39.2 N

The negative sign indicates that the net force is acting in the opposite direction of the weight. Since force is equal to mass times acceleration, we can calculate the magnitude of the initial acceleration:

Magnitude of initial acceleration = |Net force| / mass

Substituting the values, we have:

Magnitude of initial acceleration = |-39.2 N| / 2.0 kg = 19.6 m/s^2

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The molarity of the HCl solution is 1.99 M

For a variety of uses in chemistry, neutralizing reactions between acids and bases are utilized to create a neutral product (salt). As a result, since the HCl and NaOH reaction is the subject of this question, we can write:

HCl+NaOH ⇒NaCl +H₂O

The following formula can be used to determine a solution's molarity:

M₁V₁ = M₂V₂

Where;

M₁ is the acid's molarity.

M₂ is the base's molarity.

V₁ = acid volume

V₂ is the base volume.

Where there is a 1:1 mole ratio between the acid and the base, allowing us to set up the following:

M acid Vacid =Mbase Vbase

Macid 14. 00 ml = 2. 15 M 13. 00 ml

M acid = 2.15 x 13 / 14

M acid = 1.99 M

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Answer: the answer is a histogram

Explanation:

The chemical formula for aluminum oxide based on ionic bonding from valence electrons is Al₂O₃.

The chemical formula of a compound is a symbolic representation of its chemical composition.

Chemical formulae gives information about the elements that constitute the molecules of a compound and also about the ratio in which the atoms of these elements combine to form such molecules.

In this compound, aluminum (Al) donates three electrons to oxygen (O), resulting in the formation of Al³⁺ cations and O²⁻ anions. The ionic bond is formed between these oppositely charged ions, resulting in the formula Al₂O₃.

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The volume of sulfuric acid required to make desired solution is 125 mL

It is given that

Initial volume of sulfuric acid V1 = 500.0 mL

Initial molarity M1 = 2.5 M

Final volume of sulfuric acid V2 = ?

Final molarity M2 = 10.0 M

Volume is the amount of space taken up by an object, while capacity is the measure of an object's ability to hold a substance, like a solid, a liquid or a gas.

We can find by using formula

M1V1 = M2V2

2.5 M x 500.0 ml = 10.0 M x V2

V2 = 125 mL

Hence, volume of sulfuric acid required to make desired solution is 125 mL

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Mass of NH4NO3 use for every 100 g of water is 32.56g.

Calculation:-

m = 100.0 g

dT = 50 -25 = 25 oC

Cp = 4.184 J / oc g

Q  = m Cp dT

Q = 100 x 4.184 x 25

Q = 10460 J

Q = 10.46 kJ

delta H = Q / n

25.7  = 10.46 / n

n = 10.46 /25.7

n = 0.407

moles of NH4NO3 = 0.407

mass of NH4NO3 = moles x molar mass

= 0.407 x  80

= 32.56 g

mass of NH4NO3 needed = 32.56 g

If you are using an already-used instant cold pack strain the liquid and evaporate until dry. The crystals are ammonium nitrate. Dissolve 80 grams of ammonium nitrate in 70 milliliters of hot water. This will take some time, so please be patient. Adding ammonium nitrate to water cools the mixture, a good example of an endothermic chemical reaction. An endothermic reaction occurs at the moment the substances come into contact with each other.

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Answer: 1. Two protons within the Sun fuse. Most of the time the pair breaks apart again, but sometimes one of the protons transforms into 2.a neutron via a weak nuclear force. Along with the transformation into a neutron, a positron, and neutrino are formed. This resulting proton-neutron pair that forms sometimes is known as deuterium.

3. A third proton collides with the formed deuterium. This collision results in the formation of a helium-3 nucleus and a gamma ray. These gamma rays work their way out from the core of the Sun and are released as sunlight.

4Two helium-3 nuclei collide, creating a helium-4 nucleus plus two extra protons that escape as two hydrogens. Technically, beryllium-6 nuclei form first but are unstable and thus disintegrate into the helium-4 nucleus.

Explanation:

The final helium-4 atom has less mass than the original 4 protons that came together (see E=mc2). Because of this, their combination results in an excess of energy being released in the form of heat and light that exits the Sun, given by the mass-energy equivalence. To exit the Sun, this energy must travel through many layers to the photosphere before it can emerge into space as sunlight. Since this proton-proton chain happens frequently - 9.2 x 1037 times per second - there is a significant release of energy.[3] Of all of the mass that undergoes this fusion process, only about 0.7% of it is turned into energy. Although this seems like a small amount of mass, this is equal to 4.26 million metric tonnes of matter being converted to energy per second.[3] Using the mass-energy equivalence, we find that these 4.26 million metric tonnes of matter are equal to about 3.8 x 1026 joules of energy released per second!