Na2co3(aq) + cocl2(aq) --> express your answer as a chemical equation. enter noreaction if no precipitate is formed. nothing

Answer:

One

Explanation:

In a hydrogen atom, the first outer shell only consists of two valence electrons, because it would already have one, the atom only needs one more.

It requires two electrons to completely occupy its outer shell, it frequently forms a single covalent bond with another atom. Because of this configuration, hydrogen can gain access to two electrons and completely occupy its valence shell.

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When a nucleus emits an alpha particle, the mass number of the nucleus decreases, and its atomic number also decreases.

Therefore, the correct answer is: (c). The mass number decreases and its atomic number increases.

The nuclei are incredibly tiny and dense. They are 10 thousand times smaller than an atom and have more than 99.9% of its mass! Protons, which have a positive charge, and neutrons, which have no electrical charge, make up the nucleus.

When a nucleus emits an alpha particle, the mass number of the nucleus decreases, and its atomic number also decreases.

An alpha particle is composed of two protons and two neutrons, which is equivalent to a helium nucleus (He²⁺). When an alpha particle is emitted from a nucleus, the mass number decreases by 4 (as the alpha particle has a mass of 4 atomic mass units) and the atomic number decreases by 2 (since the nucleus loses two protons).

Therefore, the correct answer is:

c. The mass number decreases and its atomic number increases.

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Answer:

A noble gas configuration of an atom consists of the elemental symbol of the last noble gas prior to that atom, followed by the configuration of the remaining electrons. So for sodium, we make the substitution of [Ne] for the 1s22s22p6 part of the configuration. Sodium's noble gas configuration becomes [Ne]3s1. That is the answer.

Explanation:

Brainliest Please.

Answer:

9.77x10⁻³M HCl

Explanation:

Assuming the solution of AgNO₃ is in excess:

Based on the chemical equation:

AgNO₃ + HCl → AgCl + HNO₃

We must find the moles of AgCl that will be produced. With the moles and knowing 1 mole of AgCl is produced from 1 mole of HCl we can find the moles of HCl and its concentration as follows:

Moles AgCl -Molar mass: 143.32g/mol-:

0.7g AgCl * (1mol / 143.32g) = 4.88x10⁻³moles AgCl = Moles HCl

As the volume of the solution is 500cm³ = 0.500L, the concentration of HCl is:

4.88x10⁻³moles HCl / 0.500L =

Filtration, drying, and weighing are the actual yield.

What is the procedure of  facilitate the measurement of the actual yield?

Filtering the precipitate, drying the precipitate, and weighing the precipitate are the processes that would make it easier to quantify the real yield of the solid.

The reaction's resultant liquid/solid mixture can be separated using the filtration method and filter paper. The solid component of the reaction's byproduct would be the residue in the filter paper, and the liquid component would be the filtrate.

After allowing the residue to dry, it can be weighed with a laboratory-grade weighing balance. The solid's weight is a representation of its actual yield.

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Answer:

inert ; take up electrons

Ironing clothes is Conduction.

Conduction is one of the means of Heat transfer ,others includes

Conduction is the transfer of heat energy from one object to another object from particles in a hotter object to particles in a cooler object, For Example: Ironing clothes is conduction.

This is because The heat from the iron which transfers to the clothes is conduction.

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During the product isolation portion of the reaction, extracting the reaction mixture with nahco3(aq) accomplished the removal of acidic impurities.

This is because nahco3(aq) is a basic solution that can neutralize and react with acidic compounds in the reaction mixture. As a result, acidic impurities were converted into their corresponding salt and separated from the product. This process helped to increase the purity and yield of the desired product.
During the product isolation portion of the reaction, extracting your reaction mixture with NaHCO3(aq) accomplished the following: it neutralized any remaining acidic impurities present in the reaction mixture. This process helps to separate the desired product from unwanted side products and impurities, leading to a cleaner and purer final product.

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128.8 atm is the work in atm done on the gas during this process.

W=pV, W = p V, where W is work, p is pressure, and V is the change in gas volume, can be used to calculate the work performed by a gas under a constant pressure.

The formula Work = Force Distance can be used to compute work. The joule (J) or Newton-meter (N-m) is the SI unit for work. The amount of work required to move an item one meter with one newton of force is equal to one joule.

Work done during a gas's expansion includes:

W = -PΔV

W = -P( Vfinal - Vintial)

w =  -92 ( 2.5 - 1.1 )

w = 128.8 atm

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One way to reduce the gassiness which is associated with eating legumes is to soak them in water overnight before cooking.

Soaking helps to remove some of the indigestible sugars and oligosaccharides present in legumes, which are the primary cause of flatulence. It is also important to change the soaking water at least once to remove any of the water-soluble compounds that are responsible for causing gas.

Additionally, adding herbs and spices like cumin, fennel, ginger, and asafoetida to the cooking process may also help to reduce flatulence. Finally, slowly increasing the amount of legumes in the diet over time can also help to reduce gas, as the body gradually adjusts to the increased fiber and oligosaccharide intake.

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Answer:

Ortho nitrophenol is more acidic than ortho-methoxyphenol.

Reason:

This is because the nitro-group is an electron-withdrawing group. In the case of ortho methoxyphenol; methoxy group is an electron-releasing group. Thus, it increases the electron density in the O−H bond and hence, the proton cannot be given out easily.

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Answer:

the mass is of potassium is 88.38 rounded to the nearest hunndred.

Explanation:

Answer: 1.34 M

Explanation:

Answer:

This is just a quick tip.

Explanation:

An electric current is the movement of particles, starting at the moment when an external voltage is applied at one of the ends of the conductor. That, in turn, generates an electric field on the negatively charged electrons that are attracted to the positive terminal of the external voltage.

The answer is option

The reaction:

is a Synthesis reaction, because from 2 different substances it is produced

Answer:

1.204 × 10²⁴ atoms

Explanation:

According to this question, one mole of aluminum (Al) atom contains 6.02 × 10²³ atoms.

If two moles of aluminum are given, this means that there will be 2 × 6.02 × 10²³ atoms of aluminum

2 × 6.02 × 10²3

= 12.04 × 10²³

= 1.204 × 10²⁴ atoms.

From the tables of the standard densities of object, the block is made of iron.

We know that one of the ways that we can be able to identify what a substance is would be by the use of the density of the substance. The density is the ratio of the mass to the volume of the object.

The density of an object is an intrinsic property of the object. It does not depend on the amount of substance and it can be used to identity what kind of material that we have. This is because the density of an object must always be a constant. We can not have the volume of the object changing since it is a constant property of a substances as we know.

Given that;

Mass =  85.7 g

Volume of the object = 10.9 cm3

Density of the object = 85.7 g/10.9 cm^3

= 7.86 g/cm^3

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According to the ideal gas law, the reaction can make 47 liters of water.

What is the ideal gas law?

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Answer: When HNO3 is added to a saturated solution of silver acetate, it will react with the acetate anions to form nitric acid and acetic acid. This will shift the equilibrium of the solubility reaction to the right, according to Le Chatelier's principle, resulting in an increase in the solubility of silver acetate.

AgC2H3O2(s) ⇌ Ag+(aq) + C2H3O2-(aq)

Adding NH3 to the saturated solution of silver acetate will react with the silver ions to form the complex ion Ag(NH3)2+. This will remove the silver ions from the solution, thus decreasing the concentration of Ag+ in the solution. According to Le Chatelier's principle, the equilibrium of the solubility reaction will shift to the left to compensate for the decrease in Ag+, resulting in a decrease in the solubility of silver acetate.

Ag+(aq) + 2NH3(aq) ⇌ Ag(NH3)2+(aq)

Therefore, the addition of HNO3 will increase the solubility of silver acetate, while the addition of NH3 will decrease the solubility of silver acetate.

Explanation:

Answer:

0.05 moles of Ca(OH)2

Explanation:

The formula for molarity is: mol/L = M

First, convert 200.0 mL to L.

200 mL/1000 = 0.2 L

Next, plug in the values given.

mol/0.2 = 0.250

Rearrange the equation.

mol = 0.2*0.250

mol = 0.05

If you'd like to check it, simply plug in 0.05 to mol and divide it by 0.2. In theory, you should get 0.250.

We expect the release of PCO2 from the bottle, When the cork is pulled.

When the cork is pulled, we expect the release of PCO2 in the atmosphere to happen because there is high concentration of PCO2 in the bottle but there is no concentration of PCO2 in the atmosphere so due to diffusion, the PCO2 gas moves outside the bottle.

So we can conclude that When the cork is pulled, the release of PCO2 from the bottle will be expected.

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To determine how many moles of oxygen can be produced from 25 grams of potassium chlorate, we first need to calculate the number of moles of potassium chlorate in 25 grams.

The molar mass of potassium chlorate (KClO3) is 122.55 g/mol. Therefore, the number of moles of KClO3 in 25 grams is:

25 g / 122.55 g/mol = 0.204 moles of KClO3

Next, we can use the stoichiometry of the chemical equation to determine the number of moles of oxygen produced. According to the balanced equation, for every 1 mole of KClO3, 3 moles of oxygen are produced. Therefore, the number of moles of oxygen produced from 0.204 moles of KClO3 is:

0.204 moles KClO3 x 3 moles O2 / 1 mole KClO3 = 0.612 moles O2

Therefore, 25 grams of potassium chlorate can produce 0.612 moles of oxygen.

Q = mcΔt

Q = 50 g x 4.184 J/g°c (100 - 20)°C

Q = 16736 J

Answer:

Q = mcΔt

Explanation:

Specific heat capacity of water = 4.18 J °C g

Mass of water = 50g

Δt = 100 - 20 = 80°C

Q = (50) x (4.18) x (80)

Q = 16720 J is required to raise the temperature of the water

Answer:

Uranium-235 absorbing a neutron and breaking into Barium-141,  Krypton-92 and three neutrons

Explanation:

A fission reaction is said to have occurred when an unstable nucleus is bombarded with a neutron such that it disintegrates into daughter nuclei and produces more neutrons in the process. Hence, Uranium-235 absorbing a neutron and breaking into Barium-141,  Krypton-92 and three neutrons is a fission reaction.

This fission reaction is often a self sustaining reaction. The neutrons produced in the reaction bombards more of the parent nucleus and the process continues indefinitely(chain reaction).

Control rods and moderators are used to keep the chain reaction in check.

Sulfuric acid (aq) + zinc hydroxide (s) --->  zinc sulfate (aq) + water (l) :

H₂SO₄(aq)   +  Zn(OH)₂(s)    ---->   ZnSO₄(aq)    +   2H₂O(l). This is a type of neutralization reaction.

The reaction is given as :

H₂SO₄(aq)     +     Zn(OH)₂(s)    ---->   ZnSO₄(aq)    +   2H₂O(l).

Sulfuric acid      zinc hydroxide       zinc sulfate         water

This is reaction it the type of the neutralization reaction. The neutralization reaction is the reaction in which the acid base will react and produces the salt and the water. In this type of the reaction the H⁺ ions and OH⁻ ions forms the water. This is also called as the acid - base neutralization reaction.

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Given that

• T1 = 290K,

• T2 = 250K

• V1 = 1L

• V2=...?

We will use Charles's law formula to determine the resulting volume

V1 / T1 = V2 / T2.

→V2 = (V1*T2 )/T1

=1*250/290

=0.86 L

This is true because when temperature decreases , volume also decreases .