What is the net ionic equation for the following reaction that takes place in water? Mg + H2SO4 ⟶ MgSO4 + H2

Answer:

The correct answer is - the second law of thermodynamics.

Explanation:

The second law of thermodynamics says that the in all heat energy exchange or transfer, and if there is no gain or lose of energy in a system, the potential energy of the particular state in that system will less than that of initial state of the system in any case.

It also suggests that the processes deals with the conversion of the heat energy are irreversible and the energy can be transfer from lower temperature system to higher temperate system without adding energy.

Thus, The fact that a heat pump requires energy to move heat from a colder object to a hotter object is a real life example of the second law of thermodynamics.

Answer:

87.67720999999963

Explanation:

Answer:

87.67720999999963

Explanation:

Solution:

Step 1: Calculate the molar mass of NaCl.

molar mass = (22.99 g/mol × 1) + (35.45 g/mol × 1)

molar mass = 58.44 g/mol

Step 2: Calculate the number of moles of NaCl.

Answer:

the Germany scientist Alfred Wagner describes fold mountains that are found in The world are the same also geological similarity that occur between this continent are the same for example the rock that are found in brazil are the same of that of south africa.

The compounds ranked by their expected lattice energy from greatest to least are: MgF_2, MgCl_2, MgBr_2, MgI_2.

Lattice energy is a measure of the energy released when gaseous ions come together to form an ionic solid. It is influenced by factors such as ion charge and ion size. In general, as the charges of the ions increase, the lattice energy also increases. However, when comparing ions with the same charge, the size of the ions becomes the determining factor.

In the given compounds, the common ion is Mg_2+ (with a +2 charge), while the anions are F-, Cl-, Br-, and I-. Among these anions, fluoride (F-) has the smallest ionic radius, followed by chloride (Cl-), bromide (Br-), and iodide (I-). Smaller ions have a higher charge density, meaning the positive charge is concentrated in a smaller space, leading to stronger attractive forces between the ions.

Therefore, based on ion size, the compound with the greatest expected lattice energy is MgF_2, followed by MgCl_2, MgBr_2, and MgI_2, with MgF_2 having the strongest bond and MgI_2 having the weakest bond.

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Answer:

That is Hydrolysis reaction.

\(HCl _{(aq)} \: + \: _{(aq)} \: - - > \: H ^{ + }_{(aq)} \: + \: Cl {}^{ - } _{(aq)}\)

Answer

moles = 5.81 mol

Explanation

Given:

Volume = 144 L

AT SATP

1 mole = 24.4651 L

Solution:

1 mole = 24.4651 L

x mole = 144 L

x = 144/24.4651

x = 5.8 mol

Answer: Fractional Distallation

Explanation: this technique relies on the compounds of the mixture. This is able to happen when there is diffrent boilling points.

Answer:

Metallic Bonding

Explanation:

Conductivity occurs when electrons or ions are free moving. The conductivity in metals is due to electrons being delocalized in a sea of electrons. Metals contain metallic bonding which allows the electrons to freely move.

Malleability happens when adjacent layers of positive ions move relative to one another while being in contact with the sea of electrons from the metallic bonding.

Given :

Half-life of Iodine , \(t_{0.5}=8 \ days\) .

Initial concentration , \([A_o]=100\ mg\) .

To Find :

The amount of sample remains after 32 days .

Solution :

Rate constant is given by :

\(k=\dfrac{0.693}{t_{0.5}}\\\\k=\dfrac{0.693}{8}\ s^{-1}\\\\k=0.086625\ s^{-1}\)

Now , by rate law :

\([A]=[A_o]e^{-kt}\)

Putting all given values, we get :

\([A]=100\times e^{-(0.086625)\times 32}\\\)

\([A]=6.25\ mg\)

Therefore , the remaining sample after 32 days is 6.25 mg .

Hence , this is the required solution .

Answer:

Mass is 5560 grams

Explanation:

\({ \boxed{mass = density \times volume}}\)

Density is 5.56 g/L

Volume is 1 m³ = 1,000 L

Substitute the following to get mass:

\(mass = (5.56 \times 1000) \\ { \boxed{ \boxed{mass = 5560 \: grams}}}\)

Answer:

replication

Explanation:

Replication is one of the characteristics of good research and it refers to the ability of research to be reproduced-able with similar results by an independent researcher or group of researchers.

Hence, when a scientist conducted an experiment and another scientist did the same with similar results, the process is known as replication.

A molecule having four total electron groups around the central atom has three bonding electron groups and one nonbonding electron group. Its molecular structure is trigonal pyramidal.

One or more atoms are joined by covalent (chemical) bonds to form molecules. Atoms can be represented as circles with a nucleus at their center (consisting of protons and neutrons) and one or more concentric circles around them, which represent the "shells" or "levels" in which the electrons surrounding the atom's nucleus are located, along with markings indicating the electron at each level. The lowest unit into which a substance can be divided while still being the same substance is a molecule. It is composed of two or more atoms that are chemically bonded to one another.

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Answer:

house fly = cellular    rabbit = cellular    crab = cellular

Explanation:

Answer:

50 Meters North

Explanation:

Displacement is the distance/direction from the start point to

the ending point, regardless of which route you took from the start to the end.

So, you would simply subtract:

1,500 meters North- 1,450 meters South= 50 meters North

The change in enthalpy when 5.00 g of CO2 is formed is -44.67 kJ. This means that the process of forming 5.00 g of CO2 from its constituent elements releases 44.67 kJ of heat.

The change in enthalpy when 5.00 g of CO2 are formed can be calculated using the following formula:

ΔH = n × ΔHf

where ΔH is the change in enthalpy, n is the number of moles of CO2 formed, and ΔHf is the heat of formation of CO2.

To determine the number of moles of CO2, we first need to convert the mass of CO2 into moles. CO2 has a molar mass of about 44.01 g/mol. As a result, the amount of CO2 in moles is:

n = mass/molar mass = 5.00 g/44.01 g/mol = 0.1135 mol

Substituting the value of n and the given value of ΔHf = -393.5 kJ/mol, we get:

ΔH = 0.1135 mol × (-393.5 kJ/mol) = -44.67 kJ

Therefore, the change in enthalpy when 5.00 g of CO2 are formed is -44.67 kJ.

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The mass of solution B is 1,023.75 kg. The mass of solution A is 866.25 kg.

Solution A is 5% salt and solution B is 11% salt. If a kg solution A and b kg solution B are mixed to create 1,890 kg solution that is 8.25% salt and 91.75% water.

The percentage of a solution is the ratio between the mass of the salt and the total mass of the solution.

\(Percentage = \frac{salt}{total \: solution} \times 100\%\)

\(8.25\% = \frac{0.05a \:+\: 0.11b}{a \:+\: b} \times 100\%\)

\(\frac{8.25}{100} = \frac{0.05a + 0.11b}{a + b}\)

8.25a + 8.25b = 5a + 11b

8.25a - 5a = 11b - 8.25b

3.25a = 2.75b

325a = 275b

13a = 11b

\(a = \frac{11}{13}b\)
Calculate mass of each solution.

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Answer:

B

Explanation:

chemical reaction a process in which one or more substance the recessed ants are converted to one or more different substances the products substances are either chemical elements or compounds a chemical reaction rearranges the consulstituent atoms of reactants to create different substances products

Answer:

E = hc/λ

Explanation:

To calculate the energy of a photon of radiation, we can use the formula:

E = hf = hc/λ

where:

E = energy of the photon (in Joules)

h = Planck's constant (6.626 x 10^-34 Joule-seconds)

f = frequency of the radiation (in Hertz)

c = speed of light (3.0 x 10^8 meters/second)

λ = wavelength of the radiation (in meters)

For a frequency of 8.24 x 10^14 Hz:

E = hf = (6.626 x 10^-34 J*s)(8.24 x 10^14 Hz) = 5.46 x 10^-19 J

For a wavelength of 6.44 x 10^-9 m:

E = hc/λ = (6.626 x 10^-34 J*s)(3.0 x 10^8 m/s)/(6.44 x 10^-9 m) = 3.07 x 10^-19 J

To calculate the wavelength of light that emits 3.3 x 10^-13 Joules of energy:

E = hc/λ

λ = hc/E = (6.626 x 10^-34 J*s)(3.0 x 10^8 m/s)/(3.3 x 10^-13 J) = 6.01 x 10^-7 m = 601 nm

Helium atoms do not combine to form he2 molecules, yet he atoms do attract one another weakly through dispersion forces.

The weakest intermolecular force is called the dispersion force. When the electrons in two nearby atoms occupy positions that cause the atoms to temporarily form dipoles, the resulting temporary attractive force is known as the London dispersion force. An induced dipole-induced dipole attraction is another name for this force. The attractive forces known as London forces are what cause nonpolar substances to condense into liquids and to freeze into solids when the temperature is sufficiently lowered.

An atom or molecule can produce an instantaneous (temporary) dipole when its electrons are dispersed asymmetrically around the nucleus due to the electrons' constant motion.

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Answer:

Mass is a measure of how much matter an object contains, while weight is a measure of the force of gravity on the object. An object has the same composition, and therefore mass, regardless of its location.

Explanation:

Answer:

7.224 × 10^28 atoms

Explanation:

The number of moles contained in a substance (n) can be calculated from this expression:

nA = n × 6.02 × 10^23 atoms

Where;

nA = number of atoms of substance

n = number of moles of substance

Avagadro's number or constant = 6.02 × 10^23 atoms

Using nA = n × 6.02 × 10^23 atoms

In this question, there are 1.2 x 10^5 moles of neon (N). The number of atoms (nA) is as follows:

nA of neon = 1.2 x 10^5 × 6.02 × 10^23

nA = 7.224 × 10^ (5 + 23)

nA = 7.224 × 10^28 atoms

The number of neon atoms in 1.2 x 10^5 is 7.224 × 10^28 atoms.

A solution comprises solute and solvent that can be in the form of the same or different composition. The water is solvent and the mixture is solute. Thus, option c is correct.

A mixture is a solution that may or may not have a definite and uniform composition. They even can have one or more phases. The mixture can be heterogeneous or homogeneous.

Here, the water is the solvent to which the solute, vinegar, and dye are added. The vinegar and dye both are liquid solutes that are added to the solvent to form a solution of definite composition.

Therefore, option c. mixture is the solute and water is the solvent.

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During the electrolysis process, a direct electric current is passed through the Cr3+ solution. This causes the Cr3+ ions to gain three electrons and form solid metallic chromium on the surface of the iron hubcap.

Now, let's move on to the second part of your question. The iron hubcap would serve as either the anode or the cathode during the electrolysis process. To determine which electrode it is, we need to consider the half-reaction.Since the Cr3+ ions are gaining electrons and being reduced to form metallic chromium, we can conclude that the iron hubcap is acting as the cathode.

In summary: The half-reaction that takes place to plate the hubcap with metallic chromium is: Cr3+ (aq) + 3e- → Cr(s The iron hubcap serves as the cathode during the electrolysis process.

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Answer:

I'm sorry, but I don't see an equation in your question to provide a specific answer. However, I can answer your general question.

Nitrogen has one more proton than Carbon because it has one more positively charged particle (proton) in its nucleus. This difference in the number of protons determines the atomic number and identity of the element.

Protons can only come from the nucleus of another atom, through a nuclear reaction. In nature, nitrogen is usually created by nuclear fusion in stars, where lighter elements combine under high pressure and temperature to form heavier elements.

Regarding the second part of your question, without the specific equation you are referring to, I cannot determine the type of reaction depicted. There are many types of chemical reactions, including synthesis, decomposition, combustion, acid-base, and redox reactions, among others.

If the pharmacy stocks 35% omeprazole suspension, it required 160 ml of the 35% omeprazole suspension for the dilution.

It is required to apply the idea of dilution equations to determine the quantity of 35% omeprazole suspension required for dilution.

Let C₁ be the concentration of the 8% omeprazole suspension (8%), and let V₁ be the volume of the 0.7 L 8% omeprazole suspension.

Let C₂ be the concentration of the 35% omeprazole suspension, and let V₂ be the volume of the 35% omeprazole suspension that we need to find.

The dilution equation states that the product of the starting volume and concentration (V₁ × C₁) and the end volume and concentration (V₂ × C₂) should be identical.

V₁ × C₁ = V₂ × C₂

Putting the given values:

0.7 L ×  8% = V₂  × 35%

0.056 L = V₂ × 35%

Dividing both sides by 0.35), get:

V₂ = 0.056 L / 0.35

V₂ = 0.16 L

Change 0.16 L to milliliters (ml):

0.16 L × 1000 ml/L = 160 ml

Thus, 160 ml of the 35% omeprazole suspension would be required for the dilution.

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