how many moles of silver is 8.46x10^24 atoms of silver

This is mind numbing, but I got you.

3NaOH + 1FeCl3 = 1Fe(OH)3 + 3NaCl

3Mg + 2H3(PO)4 = 1Mg(PO4)2 + 3H2

3C⁻⁻ on reaction with HI gives I⁻⁻⁻ as the main products and not H⁻ and C₂H₅I.

When 3C⁻⁻ is reacted with HI, the reaction product obtained is I⁻⁻⁻ as the main product. The C₂H₅I and H⁻ are not produced in significant quantities and cannot be considered the main product.The 3C⁻⁻ compound reacts with HI in the presence of a solvent to produce hydrogen gas, H⁻, C₂H₅I, and I⁻⁻⁻. The primary product obtained is I⁻⁻⁻ because it is stable and has a higher energy than C₂H₅I and H⁻.However, the reaction can be controlled to obtain C₂H₅I and H⁻ as the primary products by changing the reaction conditions. The reaction must be carried out in anhydrous conditions and at a low temperature so that the reaction proceeds in the desired direction.

3C⁻⁻ on reaction with HI gives I⁻⁻⁻ as the main products and not H⁻ and C₂H₅I. However, the reaction can be controlled to obtain C₂H₅I and H⁻ as the primary products by changing the reaction conditions.

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Answer: Atoms lose energy as a gas changes to a solid.

Explanation:

Answer:

Atoms lose energy as a gas changes to a solid.

Explanation:

The balanced chemical equation for the reaction between K3PO4 and NiCl2 is K3PO4(aq) + 3NiCl2(aq) → Ni3(PO4)2(s) + 6KCl(aq). From the balanced equation, we can see that 2 moles of K3PO4 are required to react with 3 moles of NiCl2.

We are given that the concentration of the K3PO4 solution is 0.205 M and the volume of the NiCl2 solution is 126 mL. We can use these values to calculate the number of moles of NiCl2 in the solution.

Moles of NiCl2 = Concentration * Volume = 0.0116 M * 0.126 L = 0.00144868 mol

Since 2 moles of K3PO4 are required to react with 3 moles of NiCl2, the volume of K3PO4 solution required to react with 0.00144868 mol of NiCl2 is:

Volume of K3PO4 = (0.00144868 mol NiCl2 / 2 mol K3PO4) * 1 L = 0.00072434 L = 7.2434 mL

Therefore, 7.2434 mL of 0.205 M K3PO4 solution is necessary to completely react with 126 mL of 0.0116 M NiCl2.

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Answer: Carbon,Hydrogen, Chlorine

Explanation:

C=Carbon

H=Hydrogen

Cl=Chlorine

Hope this helps :)

The total number of protons are 6 and the total number of neutrons are 7 in an atom of the naturally occurring carbon isotope with the largest mass number.

Isotopes of almost all elements save hydrogen get their names from the mass number of their nuclei. Carbon atoms, for instance, have a mass number of 12 since the sum of their six protons and six neutrons equal 12. As a result, these atoms are referred to as carbon-12. The atomic mass of carbon atoms with seven neutrons is 13, which is equal to six protons plus seven neutrons. The isotope known as carbon-13 can be found in these atoms.

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Explanation:

The most common hot dipping process for industrial applications is galvanizing, which refers to the coating of zinc over iron or steels for rust proofing. It is an extremely versatile and easy means of providing corrosion protection for construction materials exposed to atmospheric conditions

X-ray is not a part of particulate radiation. The correct answer is option d.

Particulate radiation is composed of particles with mass such as protons, neutrons, and electrons. X-rays, on the other hand, are a form of electromagnetic radiation and do not have mass or charge.

X-rays are produced when high-energy electrons collide with a metal target and can penetrate through materials, making them useful for medical imaging and industrial inspection.

However, they can also be harmful to human health if exposure is prolonged or at high doses. In contrast, particulate radiation can be stopped by a material barrier, such as clothing or walls, but can be more damaging to biological tissue if absorbed due to their mass and charge.

It is important to be aware of the different types of radiation and their potential effects to take appropriate safety precautions.

Therefore, option d is correct.

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Answer:

A. relative humidity B. air temperature C. air pressure D. atmospheric

Explanation:

The sentences can be completed as follows; Humidity is the amount of water vapor in the air compared to the amount of water vapor the air can actually hold. Air temperature is a measure of how hot or cold the air is,  Air pressure is the force exerted per unit area by the particles in the air. These conditions influence weather patterns.

Humidity refers to the amount of water vapor or moisture present in the air. Specifically, it is the measure of the amount of water vapor present in the air compared to the amount of water vapor the air can actually hold at a particular temperature and pressure.

It is often expressed as a percentage, known as relative humidity, which describes the amount of moisture in the air relative to the maximum amount it can hold at a given temperature.

The given sentences can be completed as :

Humidity is the amount of water vapor in the air compared to the amount of water vapor the air can actually hold. Air temperature is a measure of how hot or cold the air is,  Air pressure is the force exerted per unit area by the particles in the air. These conditions influence weather patterns.

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(a) pH before addition of any HBr: It is basic since pyridine is a weak base.

(b) pH after addition of 12.5 mL of HBr: pH is calculated using the Henderson-Hasselbalch equation since pyridine acts as a buffer.

(c) pH after addition of 23.0 mL of HBr: pH is still calculated using the Henderson-Hasselbalch equation.

(d) pH after addition of 25.0 mL of HBr: pH is at the equivalence point, where the pyridine is completely neutralized, resulting in a pH close to 7.

(e) pH after addition of 31.0 mL of HBr: pH becomes acidic as excess HBr is added.

(a) Before adding any HBr, the solution contains only pyridine, which is a weak base. The pH will be basic, likely above 7.

(b) After adding 12.5 mL of HBr, the solution forms a buffer system. The Henderson-Hasselbalch equation can be used to calculate the pH, which is determined by the ratio of the concentration of the conjugate acid (pyridinium ion) to the concentration of the base (pyridine).

(c) As more HBr is added (23.0 mL), the buffer system is still present, and the pH can be calculated using the Henderson-Hasselbalch equation.

(d) When 25.0 mL of HBr is added, it is at the equivalence point. The pyridine is completely neutralized, resulting in a pH close to 7, which is considered neutral.

(e) Adding more HBr (31.0 mL) beyond the equivalence point makes the solution increasingly acidic, as the excess HBr dissociates and increases the concentration of H+ ions.

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Any electrically conducting path that makes up an electric circuit in which the entire current passes through each component is referred to as a series circuit.

Thus, A series circuit's total current is equal to the current flowing through each resistor.

All of the parts of a series circuit are wired together end to end to create a single path for current flow. In a parallel circuit, one component is linked across the other by the same voltage at exactly two electrically common nodes.

More than two circuit components can be connected in two basic ways: series and parallel. In order to build more sophisticated series-parallel circuits, these two fundamental connection techniques can be combined.

Thus, Any electrically conducting path that makes up an electric circuit in which the entire current passes through each component is referred to as a series circuit.

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Answer:

The energy that is associated with the motion or position of an object

or simply kinetic or potential Energy

Give names to equations 1, 2, and 3.Equation 3.2 N2O (g) N2 (g) + 0.5 O2 (g) H = -81.6 kJEquation 2: NO (g) + 1/2 O2 (g) + (1/2) NO2 (g) = +56.55 kJ

Equation 1 states that N2 (g), O2 (g), 2NO (g), and H = +180.7 kJ.

See Equation of state for cosmological applications of this (cosmology). See Optimum control General technique for further information on how this idea is used in optimal control theory.An equation of state is a thermodynamic formula used in physics, chemistry, andthermodynamics to describe the state of matter under a particular set of physical parameters, such as pressure, volume, temperature, or internal energy.[1] The Helmholtz free energy is used to formulate the majority of current equations of state. The characteristics of pure substances and mixtures in their liquid, gaseous, and solid forms as well as the state of matter

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Answer:

Unbalanced

Explanation:

\(\text{Fe}(\text{NO}_3)}_3+ \text{NaOH} \rightarrow \text{Fe(OH)}_3 + \text{NaNO}_3\\\\\text{Balanced reaction:}\\\\\text{Fe}(\text{NO}_3)}_3+ 3\text{NaOH} \rightarrow \text{Fe(OH)}_3 + 3\text{NaNO}_3\)

Answer:

Light energy is a form of electromagnetic radiation. Light consists of photons, which are produced when an object's atoms heat up.

Explanation:

Answer:

Light energy is a kind of kinetic energy with the ability to make types of light visible to human eyes. Light is defined as a form of electromagnetic radiation emitted by hot objects like lasers, bulbs, and the sun. Light contains photons which are minute packets of energy.

Explanation:

hope it's helpful for you.

32.0662

We have given an element X which is made up of two isotopes, one isotope has an atomic mass of 63.9358, which is 48.632% abundant, and the other isotope has an atomic mass of 65.9343, which is 51.368% abundant. We need to calculate the average atomic mass for X. Solution: We know that: Atomic mass = (mass of isotopes 1 x % abundance of isotope 1) + (mass of isotope 2 x % abundance of isotope 2)/100. Let the atomic mass of element X be m. Then, Substituting the values of the atomic mass and abundances, we get, m = (63.9358 × 48.632) + (65.9343 × 51.368)/100= 31.045288 + 33.991912/100= 32.0662. Average atomic mass for X is 32.0662 rounded to 5 significant figures.

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Answer:

The bowling ball is red, has stripes, and has 3 finger holes.

Answer:

The shape of the bowling ball is round. The color of the bowling ball is red. The bowling ball is hard. The bowling ball is smooth.

Explanation: Hope I helped

The bubbles that you feel on your tongue when you drink soda pop are due to corbon dioxide (CO2).

People have the feel the bubbles bursting in their mouths when they drink soda pop these bubbles happen because of carbonation process. corbon dioxide beverages are produced by dissolving carbon dioxide in liquid, under high pressure. popping open a can or bottle of the liquid reduces that pressure, and releasing the carbon dioxide in the form of bubbles. that's why the bubbles that you feel on your tongue is because of corbon dioxide (CO2) which is present on drink soda as a chemical substance.

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MgCl₂ & PbSO₄ is the correct product for the given double replacement reaction.

In the double displacement reaction displacement of two substrate will take place among two reactants and formation of products takes place.

In the question, PbCl₂ reacts with MgSO₄ and displacement between the cations takes place and formation of  MgCl₂ and insoluble precipitate PbSO₄ is formed.

Given reaction is represented as:

PbCl₂ + MgSO₄ → MgCl₂ + PbSO₄

According to the activity series, reactivity of Magnesium is more as compared to the lead atom. So lead is displaced by the magnesium atom and form the above given products.

Hence, option (3) is correct i.e. MgCl₂ & PbSO₄.

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Answer:

1st Question: C

2nd Question: A

Explanation:

bc i said so

The statement of fact is that Gregor Mendel demonstrated that traits are passed from parents to offspring independently of one another under all circumstances that he tested.

The independent assortment of genes is the theory that states that traits are inherited from parents by offspring independent of each other.

Gregor Mendel from experiments using pea plants was able to demonstrate this observation by many scientists.

Since, scientific theories are proven by experiments, Mendel's experiments provided facts for this observation.

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The exponential equation is required to be written to express the amount of chemical dissolved, y, in terms of temperature, L, in degrees Celsius.

The equation can be represented as given below:

Substituting the given values of temperature and the amount of chemical dissolved in the equation, we get8 = ae^(0k)15 = ae^(10k)Dividing the second equation by the first equation we get:

Substituting the value of k in the second equation, we get:

Therefore, the exponential equation to express the amount of chemical dissolved, y, in terms of temperature, L, in degrees Celsius is y = 1.76e^(0.0562L).

Now, we are required to find out the temperature at which 17 g of the chemical will dissolve. Using the above equation, we can find out the value of L as follows:

Temperature shows the degree or size of the heat of an object. Simply put, the higher the temperature of an object, the hotter it is. Microscopically, temperature shows the energy possessed by an object. What is the use of temperature? Temperature or temperature is a quantity used to determine whether an object is hot or cold.

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The value of the acid-dissociation constant, Ka, can be related to the pH of a solution. A lower pH value indicates a stronger acid and therefore a larger Ka value.

From the table, it appears that Acid 2 has the lowest pH values and therefore the largest Ka value, meaning it has the smallest acid-dissociation constant.

The acid-dissociation constant, Ka, is a measure of the strength of an acid in solution. A lower pH value indicates a stronger acid, and thus a larger Ka value. In the table, the pH of Acid 2 is consistently lower than that of the other acids, with the lowest value being 0.98. This indicates that Acid 2 is the strongest acid and has the largest Ka value, meaning it has the smallest acid-dissociation constant. In general, the Ka value can be used to compare the strengths of different acids and to predict the behavior of acids in solution. Understanding the Ka value is important in a wide range of applications, including in the pharmaceutical, food, and environmental industries.

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Complete question is in the image attached

Answer:

a) 1.567 x 10^9

b) 2.36 x 10^(-5)

The mass of acetaminophen that contains 8.94 × 10²² molecules is 22.52grams.

The mass of a substance can be calculated by multiplying the number of moles of the substance by its molar mass as follows:

mass = no of moles × molar mass

According to this question, a tablet of acetaminophen contains 8.94 × 10²² molecules. The number of moles in this substance must first be calculated as follows:

no of moles = 8.94 × 10²² ÷ 6.02 × 10²³

no of moles = 1.49 × 10-¹

no of moles = 0.149moles

mass = 0.149 × 151.2 = 22.52g

Therefore, 22.52grams is the mass of acetaminophen tablet.

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The mass of the cell wall, assuming the cell is spherical and the wall is a thin spherical shell, is approximately 0.91 milligrams.

To calculate the mass of the cell wall, we first need to determine the volume of the wall.

The given diameter of the cell is 0.00 μm, which means the radius (r) of the cell is half of that, so r = 0.00/2 = 0.00 μm = 0.00 nm.Now, we need to find the volume of the cell wall, which can be approximated as a thin spherical shell. The volume of a thin spherical shell can be calculated using the formula:

V = 4/3 * π * (r_outer^3 - r_inner^3)

Since the cell is spherical, the inner radius of the shell is the same as the radius of the cell (r), and the outer radius of the shell is the sum of the radius of the cell (r) and the thickness of the wall (60.0 nm). Thus, the outer radius (r_outer) of the shell is:

r_outer = r + thickness = 0.00 + 60.0 = 60.0 nm

Substituting the values into the formula, we have:

V = 4/3 * π * (60.0^3 - 0.00^3)

= 4/3 * π * (216,000 nm^3)

= 288,000 π nm^3

Next, we need to calculate the mass of the cell wall using the density of pure water. The density (ρ) is given as 1000 kg/m^3, which is equivalent to 1000 kg/1,000,000,000 nm^3 since 1 m = 1,000,000,000 nm. Thus, the mass (m) of the cell wall is:

m = ρ * V

= 1000 kg/1,000,000,000 nm^3 * 288,000 π nm^3

= 0.000288 π kg

Now, we can calculate the mass of the cell wall by substituting the value of π (pi) as 3.14159:

m = 0.000288 * 3.14159 kg

= 0.000905 kg

≈ 0.91 mg

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It would take approximately 672 seconds or 11 minutes and 12 seconds to walk to school at an average speed of 2 m/sec.

The average speed is the total distance traveled divided by the total time taken to cover that distance. It is a measure of how fast an object or a person moves on average.

The unit of average speed is usually expressed in kilometers per hour (km/h) or miles per hour (mph) in the English system. For example, if a car travels a distance of 100 kilometers in 2 hours, its average speed is 50 km/h.

To calculate the time it would take to walk to school, we can use the formula:

time = distance / speed

where distance is the distance between home and school, and speed is the average walking speed.

Plugging in the given values, we get:

time = 1344 meters / 2 m/sec

time = 672 seconds

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Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass = 100 g

volume = 12 mL

We have

\(density = \frac{100}{12} = \frac{25}{3} \\ = 8.333333...\)

We have the final answer as

Hope this helps you

Answer:

The answer is A

Explanation:

Nuclear power plants produce non-radioactive waste

Answer:

A

Explanation:

Answer:

B

Explanation:

Answer:

D. 3 mol/0.5 L

Explanation:

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