Using deionized water and sugar, prepare four standard solutions with 5.0, 10.0, 15.0 and 20.0 mass percent sugar concentrations. Determine the density of each solution as well as that of the deionized water.

Empty Container 5 ml + container 10 ml + container 15 ml + container
Deionized water (g) 41.672 46.581 51.499 56.444
5.00% solution 37.557 42.623 47.675 52.731
10% solution 41.648 46.797 51.924 57.041
15% solution 37.572 42.840 48.099 53.372
20% solution 37.364 42.737 48.118 53.500

Using these five data points, create your own calibration curve, with x axis being the mass percent and the y axis being the density.

16 fluid ounce bottle of witch hazel will have 66.24ml of ethyl alcohol.

volume percent of a solution is the ratio of the volume of a solute present in a solution to the volume of the solution as a whole.

Volume Percent  =  V solute(mL)/V solution(mL)  ×  100

Volume Percent  =  V solute(mL)/V solute(mL)+V solvent(mL)  ×  100

14% of 16 fluid ounce

=(14/100)×16

=0.14×16

=2.24 fluid ounce

=66.24ml

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The set of reactions that best represents the diagram of a precipitation reaction is given below:

Li₂SO₄ (aq) + AgNO₃ (aq)  ---->

The net ionic equation is given below:

SO₄²⁺ (aq) + 2 Ag⁺ (aq)  ----> Ag₂SO₄ (s) (a precipitate)

Precipitation reactions are reactions in which two soluble solutions when they are mixed result in the formation of an insoluble precipitate.

Precipitation reactions rea usually double replacement reactions.

Double replacement reactions also known as double displacement reactions are reactions in which an exchange of radicals occurs between two metallic cations resulting in the formation of an insoluble compound that forms the precipitate observed.

Considering the given reactions and the products obtained:

NH₄Br (aq) + Pb(C₂H₃O₂)₂ (aq) ---> forms no precipitate

KNO₃  (aq) + CuCl₂(aq) ---->  forms no precipitate

Li₂SO₄ (aq) + 2 AgNO₃ (aq)  ---->  2 LiNO₃ (aq) + Ag₂SO₄ (s) (forms a precipitate)

NaClO₄ (aq) + CaCl₂ (aq)  ---->  forms no precipitate

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Answer:

1) As the temperature increased what happened to the N2O4 concentration, it decreased

2) Formation of products, products are the right hand side of the equation.

3) Right to left is exothermic

4) Change in enthalpy N2O4 ⇔2NO2, HR = -14 kcal

As it's an exothermic reaction, the enthalpy of the reactants is higher than the products and the sign of the HR will be negative.

Explanation:

N2O4 ⇔2NO2

(colorless) (reddish-brown)

1) As the temperature increased what happened to the N2O4 concentration, it decreased

2) Formation of products, products are the right hand side of the equation.

3) Right to left is exothermic

4) Change in enthalpy N2O4 ⇔2NO2, HR = -14 kcal

As it's an exothermic reaction, the enthalpy of the reactants is higher than the products and the sign of the HR will be negative.

Answer:

Hydrogen bonding is a special type of dipole-dipole attraction between molecules, not a covalent bond to a hydrogen atom. It results from the attractive force between a hydrogen atom covalently bonded to a very electronegative atom such as a N, O, or F atom and another very electronegative atom.

Explanation:

The mass of FeSO4*7H2O in the sample is 1.21 grams.

Calculate moles of Fe2O3

moles of Fe2O3 = mass of Fe2O3 / Molar mass of Fe2O3

moles of Fe2O3 = 0.348 grams / 159.69 g/mole = 0.00218 moles

Calculate moles of Fe

4 Fe + 3O2 → 2Fe2O3

For 4 moles of Fe consumed there is 2 moles of Fe2O3 produced

This means it has a ratio 2:1

So 0.00218 moles of Fe2O3 produced , there is 2*0.00218 = 0.00436 moles of Fe consumed

Calculate moles of FeSO4*7H2O

Fe + H2SO4 + 7H2O → FeSO4*7H20 + H2

For 1 mole of Fe consumed there is 1 mole of FeSO4*7H2O produced

This means for 0.00436 moles there is 0.00436 moles of Fe2SO4*H2O produced

Calculate the mass of FeSO4*7H2O in the sample

mass of FeSO4*7H2O = 0.00436 moles * 278.01 g/mole = 1.212 g

The mass of FeSO4*7H2O in the sample is 1.21 grams.

Complete question: A powder contains FeSO4⋅7H2O (molar mass=278.01 g/mol), among other components. A 3.930 g sample of the powder was dissolved in HNO3 and heated to convert all iron to Fe3+. The addition of NH3 precipitated Fe2O3⋅xH2O, which was subsequently ignited to produce 0.348 g Fe2O3. What was the mass of FeSO4⋅7H2O in the 3.930 g sample?

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The Mass of water will be 4485 g

It is given that:

heat energy = 1500 kJ

heat capacity , c = 4.18 J/g °C

initial temperature = 20.0°C

boiling of water ,final temperature = 100 °C

Q = mcΔT

m = Q / (cΔT)

m = 1500 / ( 4.18 × ( 100 °C - 20 °C )

m = 1500 / 334.4

m = 4.485 kg = 4485 g

Therefore , 1500 kJ of energy were transferred to water at 20.0°C. Heat capacity (c) for liquid water is 4.18 J/g C. ​mass of water could be brought to the boiling point is 4485 g.

The question is incomplete the complete question is:

Suppose that 1500 kJ of energy were transferred to water at 20.0°C. What mass of water could be brought to the boiling point? Heat capacity (c) for liquid water is 4.18 J/g C​

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a. The de Broglie wavelength of the 50.0 g mass travelling at 0.2 m/s is \(6.626 * 10^{-32} m\).

b. The de Broglie wavelength of the 50.0 g mass travelling at 45 km/s is \(2.949 * 10^{-37} m.\)

c. The de Broglie wavelength of an He atom travelling at 1000 m/s is \(9.961 * 10^{-11} m.\)

The de Broglie wavelength (λ) of a particle can be calculated using the following formula: λ = h / p, where h is Planck's constant (\(6.626 * 10^{-34} J s\)) and p is the momentum of the particle, given by: p = m * v, where m is the mass of the particle and v is its velocity.

(a) For a mass of 50.0 g travelling at 0.2 m/s:

\(p = m * v = 50.0 g * 0.2 m/s = 10 g m/s\)

Converting the mass to kilograms:

m = 50.0 g = 0.0500 kg

Therefore,

\(p = 0.0500 kg * 0.2 m/s = 0.010 kg m/s\)

Using the de Broglie wavelength formula:

λ = \(h / p = 6.626 * 10^{-34} J s / 0.010 kg m/s = 6.626 * 10^{-32} m\)

Therefore, the de Broglie wavelength of the 50.0 g mass travelling at 0.2 m/s is \(6.626 * 10^{-32} m\).

(b) For the same mass travelling at 45 km/s:

Converting the velocity to m/s:

v = 45 km/s = 45,000 m/s

p = \(m * v = 0.0500 kg * 45,000 m/s = 2,250 kg m/s\)

Using the de Broglie wavelength formula:

λ = \(h / p = 6.626 * 10^{-34} J s / 2,250 kg m/s = 2.949 * 10^{-37} m\)

Therefore, the de Broglie wavelength of the 50.0 g mass travelling at 45 km/s is \(2.949 * 10^{-37} m.\)

(c) For an He atom travelling at 1000 m/s:

The mass of an He atom is approximately \(6.646 * 10^{-27} kg\).

\(p = m * v = 6.646 * 10^{-27} kg * 1000 m/s = 6.646 * 10^{-24} kg m/s\)

Using the de Broglie wavelength formula:

λ = \(h / p = 6.626 * 10^{-34} J s / 6.646 * 10^{-24} kg m/s = 9.961 * 10^{-11} m\)

Therefore, the de Broglie wavelength of an He atom travelling at 1000 m/s is \(9.961 * 10^{-11} m.\)

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we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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The balanced oxidation-reduction equation for the destruction of cyanate ion waste solution from gold-mining operations by treatment with hypochlorite ion in basic solution is:

OCN⁻(aq) + OCl⁻(aq) + 2OH⁻(aq) → CO₂⁻(aq) + N₂(g) + Cl⁻(aq) + H₂O(l)

In this reaction, the cyanate ion (OCN⁻) is oxidized to carbon dioxide (CO₂⁻) and nitrogen gas (N₂), while the hypochlorite ion (OCl⁻) is reduced to chloride ion (Cl⁻). The reaction takes place in basic solution, which provides the hydroxide ions (OH⁻) needed to neutralize the acidic H⁺ ions produced during the oxidation of the cyanate ion.

The reaction is exothermic, releasing heat energy as the products form. This reaction is an effective way to dispose of the cyanate ion waste generated by gold-mining operations, as it converts the hazardous waste into harmless gases and ions.

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250 L of 5.0% w/v glucose solution can be prepared using 125 g of glucose.

w/v = [ mass of solute (g) / volume of solution (mL) ] × 100

5.0 % w/v = [ 125 g / volume of solution (mL) ] × 100

volume of solution (mL) = [ 125 g / 5.0 % w/v ] x 100

volume of solution (mL) = [ 125 g / (5.0 / 100) ] x 100

volume of solution (mL) = [ 125 g / 0.05 ] x 100

Title: The First Amendment: Safeguarding Fundamental Freedoms

While all amendments are crucial, the First Amendment holds unparalleled significance in upholding the principles of liberty, equality, and democracy.

The First Amendment to the U.S. Constitution is undoubtedly the most important amendment as it safeguards fundamental freedoms that form the bedrock of a democratic society.

This amendment, which encompasses the rights of freedom of speech, religion, press, assembly, and petition, plays a vital role in protecting individual liberties and ensuring a just and inclusive society. There are three key reasons why the First Amendment stands out as the cornerstone of our democracy.

Firstly, freedom of speech allows citizens to express their ideas, opinions, and criticisms, fostering a robust marketplace of ideas essential for progress and social change. This right empowers individuals to challenge authority, hold public officials accountable, and engage in meaningful dialogue that drives societal progress.

Secondly, freedom of religion guarantees individuals the right to practice their faith without interference from the state. This principle promotes religious tolerance, diversity, and pluralism, creating a society where individuals can freely worship and live in accordance with their beliefs.

Lastly, freedom of the press ensures an informed citizenry by safeguarding independent journalism. A free press acts as a check on governmental power, exposes corruption, and provides essential information necessary for a functioning democracy.

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The pH scale is a cuantitative method to determine the acidity, basicity or neutrality of a solution. It goes from 1 to 14 because of the hydronium (and hydroxyl) ion concentration of the water:

Answer:

The answer is below

Explanation:

one gallon of gasoline produces 9.50 kg of carbon.

The total number of cars = 40 million

Distance covered by each car = 7930 miles

Consumption rate of the cars per miles traveled is 23.6 miles per gallon.

Hence the annual gasoline consumption by all the cars in the United States of America = (total number of cars × Distance covered by each car) ÷ Consumption rate of the cars per miles

annual gasoline consumption by all the cars = (40000000 × 7930 miles) ÷ 23.6 miles/gallon = `1.344067797 × 10¹⁰ gallons

1.344067797 × 10¹⁰ gallons = \(1.344067797*10^{10}\ gallons *\frac{9.50\ kg}{1\ gallon} =1.276864407*10^{11}\ kg\ of \ carbon\ dioxide\)

The given solution is a saturated solution. A homogeneous mixture composed of two or more substances is called a solution.

In a solution, there are two primary components, which are termed as,

At a given temperature and pressure, every solvent is capable of dissolving a particular amount of solute in it.

If a solution has dissolved less amount of solute than it is capable of dissolving, then the solution is known as an unsaturated solution.

If a solution has dissolved as much as it is capable of dissolving, then the solution is known as a saturated solution.

If a solution has dissolved more amount of solute than it is capable of dissolving, then the solution is known as a supersaturated solution.

In the given problem, when the solute crystals are added to the solution, they sink and remain on the bottom of the beaker.

Hence, the given solution is saturated.

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Answer:

This is a precipitation reaction: Ni(OH)2 is the formed precipitate.

Reactants:

NaOH

Names: Sodium hydroxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Caustic soda source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Lye source: wikidata, accessed: 2019-09-02

Appearance: White, waxy, opaque crystals source: wikipedia, accessed: 2019-09-27; White hygroscopic solid in various forms source: ICSC, accessed: 2019-09-04; Colorless to white, odorless solid (flakes, beads, granular form). source: NIOSH NPG, accessed: 2019-09-02

NiCl2

Products:

NaCl – Sodium chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02

Other names: {{unbulleted list source: wikipedia, accessed: 2019-09-27, Salt source: wikidata, accessed: 2019-09-02, Table salt source: wikidata, accessed: 2019-09-02

Appearance: Colorless cubic crystals source: wikipedia, accessed: 2019-09-27

Ni(OH)2 – Nickel(II) hydroxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02

Other names: Nickel hydroxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Theophrastite source: wikipedia, accessed: 2019-09-27

Appearance: Green crystals source: wikipedia, accessed: 2019-09-27

Search by reactants (NaOH, NiCl2)

1 NaOH + NiCl2 → NaCl + Ni(OH)2

2 NaOH + Br2 + NiCl2 → NaCl + NaBr + Ni(OH)3

Search by products (NaCl, Ni(OH)2)

1 NaOH + NiCl2 → NaCl + Ni(OH)2

Search by reactants (NaOH, NiCl2) and by products (NaCl, Ni(OH)2)

1 NaOH + NiCl2 → NaCl + Ni(OH)2

Explanation:

There are 0.2107 moles of KBr are dissolved in 60.2 mL of a 3.50 M solution.

The molarity of a substance is defined as the number of moles of solute present in 1 litre of a solution.

According to the given data, the molarity of the solution tells us that there are 3.50 moles of KBr in 1000mL of solution. But we only have 60.2mL of solution, so with a mathematical rule of three we can calculate the amount of moles in 60.2mL:

1000 ml - 3.50 moles

60.2 ml -x = 60.2 ml× 3.50 moles/1000 ml

x= 60.2 ml -0.2107 moles

So, there are 0.2107 moles of KBr.

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Hydroelectric Power: Harnessing Nature’s Energy

Let's imagine a huge wall blocking a river. On one side, the water level is high, and on the other, it's low. Now imagine that this wall has a mechanism to let the water flow from the high side to the low side, and in the process, it produces electricity. This is, in simple terms, how a hydroelectric power plant works!

Hydroelectric power plants work by using water to turn turbines that generate electricity. They are often built with dams, which are like giant walls across rivers. The dams are essential because they raise the water level on one side, creating a reservoir or a lake. This reservoir stores a huge amount of potential energy. When the water is released, it flows down through turbines, and this energy is converted into mechanical energy. The turbines are connected to generators, which turn the mechanical energy into electricity.

Now, let's talk about some of the environmental and economic benefits of hydroelectricity. It's like hitting two birds with one stone! Firstly, hydroelectric power doesn’t produce greenhouse gases or pollutants during operation, which means it’s much cleaner for our air compared to coal or gas power plants. For example, the Itaipu Dam in Brazil and Paraguay is a great case study. It generates so much electricity from hydro power that it reduces CO2 emissions equivalent to what 21.6 million cars would produce in a year!

Another economic benefit is that the electricity produced is usually cheaper in the long run. Hydroelectric plants have high upfront costs but can operate for a very long time. The Hoover Dam in the USA, built in the 1930s, still generates electricity at low cost, providing power to millions of homes.

However, there is no such thing as a free lunch. There are also environmental and cultural disadvantages to hydroelectric power. When a dam is built, the area behind it gets flooded. This means that plants, animals, and even people's homes can be submerged. For instance, the Three Gorges Dam in China displaced over 1.2 million people and flooded archaeological sites. Additionally, dams can impact fish populations. In the United States, salmon populations in the Pacific Northwest have decreased partly because dams block their migration routes.

Dams also affect the natural flow of rivers, which can have far-reaching consequences for ecosystems. The Aswan Dam in Egypt, for example, has reduced the fertility of the Nile Delta because the nutrients that used to flow down the river and enrich the soil are now trapped behind the dam.

In conclusion, hydroelectric power is an incredible way to generate clean energy, but it's important to weigh these benefits against the environmental and cultural costs. Finding ways to mitigate the negative impacts or looking at alternative renewable energy sources can help us move towards a more sustainable future.

*Keep in mind, you should paraphrase this or use it as your frame of reference, otherwise it would be plain plagiarism.*

The power of water has been harnessed by humans for centuries to generate electricity, and hydroelectric power is a renewable and sustainable energy source that has been used for many years. In this essay, we will explore the inner workings of hydroelectric power plants, the advantages and disadvantages of this energy source, and the potential it holds for a sustainable energy future. Hydroelectric power plants use the force of falling water to turn turbines, generating electricity through a process that is clean and efficient. Dams are built as part of large hydropower plants to control the flow of water and store it for later use. When the water is released from the dam, it flows through a penstock and turns the turbine, which generates electricity. Moreover, hydropower plants can be easily adjusted to meet peak demand for electricity, making them a valuable source of reliable and flexible energy.

One of the main advantages of hydroelectricity is its sustainability. Water is a renewable resource that is constantly replenished by the water cycle, making hydropower an almost infinite source of energy. Additionally, hydropower plants can provide a range of ecosystem services, such as flood control, irrigation, and recreation. For example, the Itapúa Dam on the Paraná River in Brazil provides water for irrigation, supports local fishing industries, and generates electricity for millions of homes. Nevertheless, there are also environmental and cultural drawbacks to hydropower. Large dams can cause significant harm to river ecosystems, altering the natural flow of water and affecting the habitats of fish and other aquatic species. Moreover, the construction of dams can displace local communities and destroy cultural heritage sites. For example, the construction of the Three Gorges Dam in China has caused the displacement of over one million people and has destroyed numerous cultural heritage sites.

Despite these challenges, the potential of hydroelectric power for a sustainable energy future cannot be ignored. As we move towards a world that is less reliant on fossil fuels, hydropower can play a critical role in providing clean, renewable, and reliable energy. Furthermore, new technologies are being developed to reduce the environmental impact of hydropower, such as fish ladders and other measures to support fish migration. Furthermore, hydroelectric power is a powerful and sustainable source of energy that harnesses the power of falling water to generate electricity. Although there are challenges associated with hydropower, such as the environmental and cultural impacts of large dams, the benefits of this energy source are significant. As we continue to seek sustainable solutions to our energy needs, hydroelectric power will undoubtedly play a critical role in meeting our energy demands while also protecting the environment and supporting economic growth.

Thank you, I genuinely hope this helps.

The application of force in the direction of the motion of an object. The second scenario involves applying force to a moving item that is traveling in the opposite direction.

A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. A force has both a direction and a magnitude.

Force is used to describe a body's tendency to modify or change its state as a result of an external cause. When force is applied, the body can also alter its size, shape, and direction.

A push or pull that an object experiences as a result of interacting with another item is known as a force. Every time two items interact, a force is exerted on each of the objects. The force is no longer felt by the two objects when the interaction ends.

Thus, Force applied to an item in motion that originates in any direction constitutes the third situation where force is created.

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Taking into account the reaction stoichiometry, if 10.3 g of Ca(OH)₂ reacts, 5.01 grams of H₂O are formed.

The balanced reaction is:

2 H₃PO₄ + 3 Ca(OH)₂  → 6 H₂O + Ca₃(PO₄)₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

By reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 222 grams of Ca(OH)₂ form 108 grams of H₂O, 10.3 grams of Ca(OH)₂ form how much mass of H₂O?

mass of H₂O= (10.3 grams of Ca(OH)₂ ×108 grams of H₂O)÷ 222 grams of Ca(OH)₂

mass of H₂O= 5.01 grams

Finally, 5.01 grams of H₂O are formed.

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The molar mass in grams of "one mole" of each substance is:

Fe: 55.845 g/mol

\(Cl_2\): 70.906 g/mol

\(FeCl_3\): 162.204 g/mol

To calculate the molar mass in grams of "one mole" of each substance, we need to determine the atomic masses of the elements involved in the equation.

The atomic mass of iron (Fe) is 55.845 g/mol.

For chlorine (\(Cl_2\)), we need to consider that the molar mass of \(Cl_2\) is twice the atomic mass of chlorine because the formula shows that two chlorine atoms combine to form one molecule of \(Cl_2\). The atomic mass of chlorine is 35.453 g/mol, so the molar mass of \(Cl_2\) is 2 * 35.453 g/mol = 70.906 g/mol.

The formula for iron(III) chloride (\(FeCl_3\)) indicates that one mole of \(FeCl_3\)contains one mole of iron and three moles of chlorine. Therefore, we can calculate the molar mass of \(FeCl_3\)by summing the atomic masses of iron and chlorine:

Molar mass of \(FeCl_3\)= (1 * atomic mass of Fe) + (3 * atomic mass of Cl)

Substituting the values, we have:

Molar mass of \(FeCl_3\) = (1 * 55.845 g/mol) + (3 * 35.453 g/mol)

= 55.845 g/mol + 106.359 g/mol

= 162.204 g/mol

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Answer:

30ml

Explanation:

the acid-base solution just begins to turn pink and the pH reaches 7, indicating that the base has neutralized the acid. By reading the buret, it is found that 30 ml of NaOH was needed to neutralize the HCl.

The chemical structure of the compound is shown in the image attached.

Ascertain the molecule's atomic composition and the types of bonds (covalent, ionic, etc.) that each atom forms.

The skeletal structure, which is a straightforward illustration of the molecule's framework, should be drawn first. To do this, a series of lines are drawn to symbolize the atoms' bonds.

By positioning the atoms at the ends of the bond lines, you may complete the skeleton framework.

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Step 1 - Understanding the gas equation

The volume (V), the pressure (p) and the temperature (T) of a gas samples can be related to its number of moles (n) by the gas equation:

In this equation, R represents the universal gas constant, which may have different values depending on which unities are used.

Let's use L for volume, mmHGg for pressure and K for temperature. In these conditions, R = 62.3 L.mmHg/K.mol.

Step 2 - Calculating how many moles of H2 gas are produced

Now let's set the values in the equation. The exercise states that:

Substituting in the equation:

Therefore, 1.1*10^(-3) moles of H2 gas were produced.

Step 3 - Calculating the required mass of Mg

The given equation is:

We can see that one mole of Mg produces one mole of H2 gas. This is a fixed proportion. We will always have the same amount of Mg and H2 in moles for this reaction.

Therefore, if 1.1*10^(-3) moles of H2 were produced, it means the same amount of moles of Mg were required: 1.1*10^(-3) moles.

We can convert this value to mass of Mg by multiplying it by its molar mass (24 g/mol)

We would need thus 2.64*10^(-2) g of Mg for this reaction.

Answer:

Answer:

an acid is a molecule or ion capable of donating a proton or alternatively capable of forming a covalent bond with an electron pair

bases are substance which read with acid as originally proposed by G.F Rouelle in the mid-18th century

AND YOUR WELCOME

gasoline is the chemical that is coming out of the air

Answer:

To find the number of atoms in 1.525 moles of potassium, you can use the formula:

Number of atoms = Number of moles * Avogadro's number

Avogadro's number is a constant that is equal to 6.022 x 10^23 atoms/mole. Plugging in the values for the number of moles and Avogadro's number, you get:

Number of atoms = 1.525 moles * (6.022 x 10^23 atoms/mole)

= 9.149 x 10^23 atoms

Therefore, there are approximately 9.149 x 10^23 atoms of potassium in 1.525 moles of potassium.

According to Avogadro's number there are 9.18×10²³ atoms of potassium  which  make up 1.525 moles of potassium.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number

In the given question number of atoms =number of moles×Avogadro's number=1.525×6.023×10²³=9.18×10²³ atoms .

Thus ,there are 9.18×10²³ atoms of potassium  which  make up 1.525 moles of potassium.

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