nahco3(s) ⇌ naoh(s) co2(g) which is the equilibrium-constant expression for this reaction?

Answer:

In this reaction, the hydrogen from the HCl is taken up by ammonia.

NH₃ (aq) + HCl (aq)  ----> NH₄⁺ (aq)  + Cl⁻ (aq)

In this reaction, ammonium (NH₄⁺) is the acid and the chorine ion (Cl⁻) is the base.

When acid and base combine then formation of salt take place and the reaction is called neutralization reaction. Hence the balanced equation is NH₃(aq) + HCl(aq)  \(\rightarrow\)NH₄Cl

Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side. The principle behind the balanced equation is the conservation of mass that is mass can neither be created nor be destroyed.

Since, HCl is acid and NH₃ is base so H⁺ will be transferred from acid to base

The balanced equation is

NH₃(aq) + HCl(aq)  \(\rightarrow\) NH₄⁺(aq)  + Cl⁻ (aq)

Cl⁻ and NH₄⁺  combine to form salt ammonium chloride

Here NH₃  is Lewis base as it can donate its lone pare of electron to H⁺ coming from acid and HCl is a Bronsted acid as it give H⁺.

Hence the balanced equation is

NH₃(aq) + HCl(aq)  \(\rightarrow\)NH₄Cl

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The low concentration of phosphates in soil solution can be attributed to factors such as adsorption, precipitation, and immobilization.

Phosphates (PO₄³⁻) are an essential nutrient for plant growth, and their availability in soil solution is crucial for plant uptake. However, several factors contribute to the low concentration of phosphates in the soil solution:

1. Adsorption: Phosphates have a strong affinity for soil particles, particularly clay and organic matter. They can readily adsorb onto the surfaces of these particles, reducing their concentration in the soil solution and making them less accessible to plants.

2. Precipitation: Phosphates can react with cations, such as calcium (Ca²⁺) and iron (Fe³⁺), to form insoluble compounds like calcium phosphate or iron phosphate. These precipitates further decrease the concentration of phosphates in the soil solution.

3. Immobilization: Soil microorganisms and organic matter can immobilize phosphates by incorporating them into their biomass. This immobilization process temporarily removes phosphates from the soil solution, limiting their availability to plants.

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Answer:

due to the formation of an oxide or hydroxide layer

Explanation:

magnesium is a reactive metal...when left in air it reacts with oxygen to form an oxide layer of MgO and it can react with moisture to form Mg(OH)2 LAYER ON THE SURFACE.

40.55ml volume of acetone has a mass of 32.00 g.

Acetone is a common solvent with a density of 0.791 g/ml. Acetone is a chemical compound with the molecular formula C3H6O. It is a colorless, flammable liquid with a distinct odor.

Acetone is most commonly used as a solvent for cleaning and degreasing, but it also has a wide range of other uses, such as in the manufacture of plastics, pharmaceuticals, and cosmetics.

To calculate the volume of acetone with a mass of 32.00 g, we need to use the following equation:

Volume (ml) = Mass (g) / Density (g/ml)

Plugging in the given values, we get:

Volume (ml) = 32.00 g / 0.791 g/ml

Therefore, the volume of acetone with a mass of 32.00 g is 40.55 ml.

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Answer: 6 moles

Take a look at the balanced chemical equation for this synthesis reaction

N 2(g] + 3 H 2(g] → 2 NH 3(g]

Notice that you have a  1:3  mole ratio between nitrogen gas and hydrogen gas. This means that, regardless of how many moles of nitrogen gas you have, the reaction will always consume twice as many moles of hydrogen gas.

So, if you have  2 moles of nitrogen taking part in the reaction, you will need

2 moles N 2 ⋅ 3 moles H 2 /1 mole N 2 = 6 moles H 2

Answer:

313.2 g of \({K_{2} }S O_{4}\)  must be added to 1.20 liters of water to produce a 1.50 molar solution.

Explanation:

What is molarity?

According to the given question,

Solution :

∴ Number of moles of solute, here, \({K_{2} }S O_{4}\)

= molarity x volume of the solution

= 1.20 x  1.50 = 1.8

∴ Mass of 1.8 moles of \({K_{2} }S O_{4}\) = 1.8 x molar mass of   \({K_{2} }S O_{4}\)  

Now the molar mass of \(K_{2} SO_{4}\)

= (Gram atomic mass of K x 2) + (Gram atomic mass of S) + (Gram atomic mass of O x 4)

= (39x2) + 32 + (16 x 4) g

= 174 g.

∴ Mass of 1.5 moles of \({K_{2} }S O_{4}\)

= 1.8 x molar mass of   \({K_{2} }S O_{4}\)  

= 1.8 x 174 g

= 313.2 g.

Thus, 313.2 g of \({K_{2} }S O_{4}\)  must be added to 1.20 liters of water to produce a 1.50 M solution.

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Both polarity and bond length have an impact on the strength of an acid. But bond length has an effect on limited number of acids. So while comparing polarity has more impact on strength of the acid.

Strength of an acid is determined by how easily the acid dissociates and ionizes in water. Dissociation of acid is governed by the following factors.

1. Size of the atom

2. Electronegativity differences

3. Charge on the acid

4. Oxidation state of the central atom.

As the size increases, the bond length increases. The bond becomes weaker and dissociates easily. So the acid become stronger. This trend is usually seen in hydro halides. HCl will be a stronger acid than HF. But the bond length determines the strength of an acid only to a certain extend.

As difference in electronegativity increases, the polarity between atoms increases. So dissociation will become easier. So higher the polarity, greater the acid strength. In almost all acids, polarity determines its strength.

So polarity has more impact than bond length.

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The type of Co(OH)2 (Cobalt(II) hydroxide) is Ionic, KNO3 (Potassium nitrate) is ionic, PCl3 (Phosphorus trichloride) is molecular type, CrBr3 (Chromium(III) bromide) is ionic, N2O4 (Dinitrogen tetroxide) is molecular, and MgSO4 (Magnesium sulfate) is ionic. Also, PF3 has 26 total valence electrons (24 bonding electrons and 2 non-bonding electrons.) and CBr2O has 24 total valence electrons (20 bonding electrons and 4 non-bonding electrons).

The table is completed below for other compounds.

Part A  :Type , Formula, and Name of the compound are to be filled in the table provided.

1. Type: Ionic ; Formula: Co(OH)2 ; Name: Cobalt(II) hydroxide

2. Type: Ionic ; Formula: KNO3 ; Name: Potassium nitrate

3. Type: Molecular ; Formula: PCl3 ; Name: Phosphorus trichloride

4. Type: Ionic ; Formula: CrBr3 ; Name: Chromium(III) bromide

5. Type: Molecular ; Formula: N2O4 ; Name: Dinitrogen tetroxide

6. Type: Ionic ; Formula: MgSO4 ; Name: Magnesium sulfate

Part B of the question:

1. a) PF3 has 26 total valence electrons.

  c) PF3 has a total of 24 bonding electrons.

  d) PF3 has a total of 2 non-bonding electrons.

2. a) CBr2O has 24 total valence electrons.

  c) CBr2O has a total of 20 bonding electrons.

  d) CBr2O has a total of 4 non-bonding electrons.

Thus, the type of Co(OH)2 is Ionic with formula name Cobalt(II) hydroxide. Similarly, KNO3 (Potassium nitrate) is ionic, PCl3 (Phosphorus trichloride) is molecular type, CrBr3 (Chromium(III) bromide) is ionic, N2O4 (Dinitrogen tetroxide) is molecular, and MgSO4 (Magnesium sulfate) is ionic. Also, PF3 has 26 total valence electrons (24 bonding electrons and 2 non-bonding electrons.) and CBr2O has 24 total valence electrons (20 bonding electrons and 4 non-bonding electrons).

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Ester is the major product formed in the reaction involving an acid anhydride dissolved in alcohol.

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Answer: When I opened the doc it didn't work..

Explanation:

False. Infants do need omega-3 sources for their development, particularly for the growth and development of their brain and eyes. Omega-3 fatty acids are essential for healthy brain function and development in infants.

Breast milk is a rich source of omega-3 fatty acids, and it is recommended that mothers consume enough omega-3 fatty acids during pregnancy and breastfeeding to support their infant's development. Omega-3 fatty acids can also be found in some infant formulas. While omega-3 fatty acids are important for preventing cardiovascular disease in adults, they serve many other functions in the body, including supporting healthy brain development in infants.
In conclusion, it is false that infants don't need omega-3 sources. Omega-3 fatty acids are essential for the development of their brain and eyes. Mothers should ensure they consume enough omega-3 fatty acids during pregnancy and breastfeeding, and some infant formulas contain omega-3 fatty acids as well. While omega-3 fatty acids are also important for preventing cardiovascular disease in adults, they serve many other vital functions in the body.

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Answer:

(A) Use volume displacement and the mass of the rock to calculate density.

Explanation:

An element is the sum of protons and neutrons in an atom

An element is a fundamental thing that is difficult to divide into smaller parts. A substance that cannot be broken down by non-nuclear reactions is referred to as an element in chemistry and physics. An element is a unique component of a bigger system or set in computing and mathematics.

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A temperature of -280°C is impossible because it is below absolute zero which is the lowest possible temperature that can be reached.

Absolute zero is defined as -273.15°C or 0 Kelvin.

a mushroom

Explanation:

it don't make sense because the tree is not food chain

Answer:

they are both primary producers so i would say they are at the same level, hope this helps

Answer:

Hyponym is the another name for hard water.

Explanation:

Please Mark me brainliest

Answer:

Workplace Hazardous Materials Information System

WHMIS is a short form for Workplace Hazardous Materials Information System. It is a comprehensive plan for providing information on the safe use of hazardous materials used in Canadian workplaces. Information is provided by means of product labels, material safety data sheets (MSDS) and worker education programs.

Answer:

Workplace Hazardous Materials Information System

Explanation:

Answer:

Hydrogen

Explanation:

It is pretty much present everywhere :)

car, truck, bike, wheelchair

The trend of atomic radius refers to the predictable pattern of the size of atoms as one moves across or down the periodic table of elements.

Moving across a period (from left to right), the atomic radius of an element generally decreases. This is because the number of protons and electrons in the atom increases, leading to a stronger attractive force between the positively charged nucleus and negatively charged electrons. The increased pull causes the electron cloud to be pulled in closer to the nucleus, making the atomic radius smaller.

Moving down a group (from top to bottom), the atomic radius generally increases. This is because each successive element has one additional energy level than the element above it, and the electrons in these energy levels are farther from the nucleus. The increase in distance between the outermost electrons and the nucleus results in an increase in the atomic radius.

Therefore, the general trend of atomic radius is that it decreases from left to right across a period and increases from top to bottom down a group.

The following would have a larger atomic radius in the pair;

1) Ge

2) Fe

3) Kr

4) Sr

5) Na

6) I

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Answer:

Physically, yes. Heating and cooling does have an effect on matter and can change the physical form and organization of substances, but matter cannot be destroyed or created through heating and cooling.

Explanation:

Answer:

The sun is at the (edge) of our solar system

and is much (hotter) than anything else in the solar system (95%) of the entire mass of the solar system is contain in the sun

The form of transportation that accounts for the majority of greenhouse gas (GHG) emissions in Canada is passenger transport, including cars, trucks, and motorcycles.

Specifically, these modes of transportation emit carbon dioxide (\(CO_2\)) and contribute significantly to climate change.Several modes of transportation contribute to greenhouse gas emissions in Canada. However, according to the graph titled "Transportation GHG Emissions by mode, Canada,"

passenger transport such as cars, trucks, and motorcycles account for a significant percentage of total emissions. The data in the chart is presented below:- Passenger transport (Cars, trucks, and motorcycles):

44%- Light trucks (SUVs, vans, and pickups): 10%- Aviation: 9%- Heavy trucks: 8%- Rail: 3%- Electric vehicles: 1%- Transit buses: 1%- Walk/bike: 1%- Light rail transit (LRT): <1%

Therefore, passenger transport, including cars, trucks, and motorcycles, accounts for the majority of GHG emissions in Canada.

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When additional 0.25 moles of H2 are added to the reaction at equilibrium, the equilibrium would shift to the right to relieve the stress caused by the increase in H2 concentration.

According to Le Chatelier's principle, the system would respond by favoring the forward reaction to restore equilibrium. This means that more HI would be formed from the excess H2 and I2. As a result, the concentrations of H2 and I2 would decrease, while the concentration of HI would increase. The reaction would continue until a new equilibrium is reached. Note that the extent of the shift and the change in concentrations depend on the reaction's equilibrium constant and stoichiometry.

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Answer:

true

...................

The reaction of ammonia burning in the presence of a platinum catalyst to give nitric oxide is exothermic, but the exact value of heat evolved (kJ) cannot be determined.

The reaction being described is the burning of ammonia in the presence of a platinum catalyst to give nitric oxide. The experiment also mentions that the reaction evolves a certain amount of heat, measured in kilojoules (kJ).

To determine if the reaction is endothermic or exothermic, we need to consider the sign of the heat evolved. If heat is released (negative value), the reaction is exothermic, meaning it releases energy. If heat is absorbed (positive value), the reaction is endothermic, meaning it requires energy.

Since the question states that the reaction "evolves" heat, we can assume that the value of heat evolved (kJ) is negative. This indicates that the reaction is exothermic and releases energy.

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As shown in the picture, the chemical formula for glucose is C6H12O6. This means that there are 6 carbons, 12 hydrogens and 6 oxygens in one molecule of glucose.

Your Answer: 12

The solutes in an aqueous solution of KF in order of increasing concentration are : Lowest concentration: K+ (aq),H+ (aq),OH- (aq),F- (aq),Highest concentration: HF (aq)

In an aqueous solution of KF, K+ ions come from the dissociation of KF, but KF is a strong electrolyte and dissociates almost completely, so the concentration of K+ ions is relatively high. H+ ions are present in water due to the self-ionization of water, but their concentration is relatively low. OH- ions are also present due to the self-ionization of water, but their concentration is lower than that of H+ ions. F- ions come from the dissociation of KF, so their concentration is higher than that of OH- ions. HF is a weak acid that partially dissociates in water, resulting in a higher concentration of HF compared to the other ions in the solution.

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1A.matter can neither be created nor be destroyed

6.balencing equation steps:--

balencing other than hydrogen nd oxygen

balencing oxygen

balencing hydrogen

balencing charge

Answer: B. Fire is releasing energy

Explanation: