To convert between units, you need to know the relationship between units. For example, one mile equals 5280 feet. This relationship can now be used as a conversion factor, set up as required by the question. For each conversion, choose the correct arrangement of the conversion factor and complete the calculation 1. Convert 7860 feet to miles 7860 feet x (A)
A: 1 mile
B: 5280 feet 7860 feet miles 2. Co 0.5 miles to feet 0.565 miles x (C) TD
C: Choose...
D: Choose 0.565 miles feet

There are various intermolecular forces between molecules. Dipole-dipole interactions are what create the strongest intermolecular attraction.

Compared to London dispersion forces, H-bonds are more powerful, although they are not as powerful as covalent or ionic bonds. The least powerful intermolecular force is the London dispersion force. The London dispersion force, a fleeting attractive attraction, results when the electrons in two neighboring atoms occupy positions that cause the atoms to momentarily form dipoles. Dipole-dipole interactions are a specific case of hydrogen bonding. H-bonds produce the strongest intermolecular force. Ionic bonds typically outweigh covalent connections in strength. Ionic bonds result in a stable composite when all of the electrons between the components are transferred. The only electron sharing that occurs in a covalent bond is between two elements.

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The final concentration of I ions in the resulting solution is approximately 0.0311 M, expressed with three significant figures.

To determine the final concentration of I ions in the resulting solution, we need to consider the stoichiometry and volumes of the solutions being mixed.Given:

Volume of NH4l solution = 129.13 mL

Concentration of NH4l solution = 112.9 mM = 0.1129 M (converting from millimolar to molar)

Volume of Mgl2 solution = 105.31 mL

Concentration of Mgl2 solution = 0.87 M

First, we need to determine the moles of NH4l and Mgl2 in their respective solutions:

Moles of NH4l = Volume of NH4l solution * Concentration of NH4l solution

Moles of NH4l = 0.12913 L * 0.1129 M = 0.01459 moles NH4l

Moles of Mgl2 = Volume of Mgl2 solution * Concentration of Mgl2 solution

Moles of Mgl2 = 0.10531 L * 0.87 M = 0.09157 moles Mgl2

Next, we determine the limiting reagent, which is the reactant that is completely consumed and determines the maximum amount of product formed. In this case, the limiting reagent is NH4l because it has fewer moles than Mgl2.

The balanced chemical equation for the reaction between NH4l and Mgl2 is:

2 NH4l + Mgl2 → 2 NH4+ + MgI2

From the balanced equation, we can see that for every 2 moles of NH4l, we get 1 mole of MgI2.

Since the moles of NH4l is the limiting reagent, it will be completely consumed, and the moles of MgI2 formed will be half of the moles of NH4l.

Moles of MgI2 = 0.01459 moles NH4l * (1 mole MgI2 / 2 moles NH4l) = 0.007295 moles MgI2

Finally, we calculate the final concentration of I ions in the resulting solution:

Volume of resulting solution = Volume of NH4l solution + Volume of Mgl2 solution

Volume of resulting solution = 0.12913 L + 0.10531 L = 0.23444 L

Final concentration of I ions = Moles of MgI2 / Volume of resulting solution

Final concentration of I ions = 0.007295 moles / 0.23444 L = 0.0311 M

Therefore, the final concentration of I ions in the resulting solution is approximately 0.0311 M, expressed with three significant figures.

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Answer:

quadrant

Explanation:

sextant (astron.) instrument resembling a quadrant having a graduated are equal to ⅙ of a circle.

please rate brainliest if helps and follow

Answer:

False.

Explanation:

I majored in Chemistry

Answer:

A

Explanation:

Utility knife

Answer:

Utility knife

Explanation:

Answer:

Explanation:

55647 for b

The pressure in the aerosol can is 3.47 atm.

First  we can use the ideal gas law:

PV = nRT

Where

First, we need to calculate the number of moles of propane in the can:

moles of C3H8 = mass of C3H8 / molar mass of C3H8

moles of C3H8 = 3.18 g / 44.1 g/mol = 0.072 mol

Next, we need to convert the volume of the can to liters:

V = 450 mL = 0.450 L

We also need to convert the temperature from Celsius to Kelvin:

T = 20°C + 273.15 = 293.15 K

The universal gas constant is R = 0.0821 L·atm/K·mol.

Now we can plug in the values and solve for P:

P = nRT / V

P = (0.072 mol) * (0.0821 L·atm/K·mol) * (293.15 K) / (0.450 L)

P = 3.47 atm

Therefore, the pressure in the aerosol can is 3.47 atm.

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The atomic number 11 element is sodium. It's from the s block. Sodium is a very soft metal. Praseodymium is an element with the atomic number 59.

An element is a material that, when heated or illuminated, cannot be divided into two or maybe more simpler compounds by any chemical technique.

For example, when a piece of gold is melted, it still melts as well as stays as the gold element. Praseodymium is an element with the atomic number 59. It is a member of the Lanthanide series. The atomic number 11 element is sodium. It's from the s block. Sodium is a very soft metal.

Therefore, the atomic number 11 element is sodium. It's from the s block. Sodium is a very soft metal. Praseodymium is an element with the atomic number 59.

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The name of LiBr is lithium bromate and the charge of the cation (K) is +.

A cation is a positively charged ion, i.e. one that would be attracted to the cathode in electrolysis. The opposite of a cation is an anion.

Cations and anions make up an ionic compound and determine the charge on the compound. For example, an ionic compound; Lithium bromate is given in this question.

Lithium bromate is made up of Lithium (Li+) as the cation and chlorine (Cl-) as the anion.

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The partial pressure of hydrogen gas in the collected gas is 746 torr.

To determine the partial pressure of hydrogen gas in the collected gas, we need to consider the difference between the total pressure of the collected gas and the vapor pressure of water at the given temperature. The partial pressure of hydrogen gas is the pressure exerted by hydrogen alone.

Given information:

Total pressure of the collected gas (Ptotal) = 767 torr

Vapor pressure of water (Pwater) = 21.0 torr

The partial pressure of hydrogen gas (Phydrogen) can be calculated using Dalton's law of partial pressures, which states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of each individual gas.

Phydrogen = Ptotal - Pwater

Plugging in the given values:

Phydrogen = 767 torr - 21.0 torr

Phydrogen = 746 torr

Therefore, the partial pressure of hydrogen gas in the collected gas is 746 torr.

It's important to note that in this calculation, we assume that the water vapor does not react with or dissolve in the hydrogen gas and that the gases behave ideally. Additionally, it's assumed that the collected gas is dry, meaning all the water vapor has been removed or does not significantly contribute to the total pressure.

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Answer:

   \(Hope this helps you\) A typical atom consists of three subatomic particles: protons, neutrons, and electrons (as seen in the helium atom below). Other particles exist as well, such as alpha and beta particles (which are discussed below). The Bohr model shows the three basic subatomic particles in a simple manner. Most of an atom's mass is in the nucleus—a small, dense area at the center of every atom, composed of nucleons. Nucleons include protons and neutrons. All the positive charge of an atom is contained in the nucleus, and originates from the protons. Neutrons are neutrally-charged. Electrons, which are negatively-charged, are located outside of the nucleus. \(Enjoy your day\)

Explanation:

Answer:

Atoms are the fundamental building blocks of all matter and are composed of protons, neutrons, and electrons. Because atoms are electrically neutral, the number of positively charged protons must be equal to the number of negatively charged electrons. Since neutrons do not affect the charge, the number of neutrons is not dependent on the number of protons and will vary even among atoms of the same element.

Explanation:

hope it helps

It's a chemical change.

Explanation:-

Formation of crystals of sugar from a sugary syrup is a chemical change. Because, we cannot get sugary syrup back from the sugar crystals. Yet, it is chemical change.

Answer:

Plants are made of gas and mass

Answer:

hello again :-)))))))

Answer: Sugar and fat

Explanation:

Answer:

A 20.0 L

20.0

L

nickel container was charged with 0.500 atm

0.500

a

t

m

of xenon gas and 1.50 atm

1.50

a

t

m

of fluorine gas at 400 ∘C

400

∘

C

. The xenon and fluorine react to form xenon tetrafluoride. What mass of xenon tetrafluoride can be produced assuming 100%

100

%

yield?

Explanation:

The energy of a photon is hv. Where h is plank's constant and v be the frequency. The frequency of a photon with an energy of 3.75 × 10⁻²¹ J is 5.66 × 10¹² Hz.

Frequency of a wave is the number of wave cycles per unit time. It is the inverse of the time period. Thus, has a unit of s⁻¹ which is equivalent to Hz.

Frequency of a wave is directly proportional to the energy.

The energy of a photon = hv

h is the planck constant = 6.62 × 10⁻34 J.s

Given the energy of a photon = 3.75 × 10⁻²¹ J

Thus, frequency = energy/planck's constant

= 3.75 × 10⁻²¹ J/ 6.62 × 10⁻34 J.s

= 5.66 × 10¹² Hz.

Therefore, the frequency of the photon is 5.66 × 10¹² Hz.

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Answer:

Elements that occupy the same column on the periodic table

Answer:

1940K and 1939K Isotopes are two forms of the same element that have different numbers of neutrons in the nucleus. This means same symbol, and same atomic number (subscript), but different mass number (superscript).

The formula of the hydrate is NiCl2·4.27H2O. The name of the hydrate is nickel (II) chloride tetrahydrate.

To determine the formula and name of the hydrate, we need to first find the value of "x" in the formula NiCl2·xH2O using the given information.

Mass of water = Initial mass - Mass of anhydrous salt

Mass of water = 0.470 g - 0.256 g

Mass of water = 0.214 g

The molar mass of H2O is 18.015 g/mol, so the number of moles of water present in the hydrated salt can be calculated as:

Moles of water = Mass of water / Molar mass of water

Moles of water = 0.214 g / 18.015 g/mol

Moles of water = 0.0119 mol

The number of moles of anhydrous salt can be calculated by dividing its mass by its molar mass:

Moles of anhydrous salt = Mass of anhydrous salt / Molar mass of anhydrous salt

Moles of anhydrous salt = 0.256 g / (Ni: 58.69 g/mol + 2Cl: 2 x 35.45 g/mol)

Moles of anhydrous salt = 0.00279 mol

The ratio of moles of water to moles of anhydrous salt is equal to "x" in the formula NiCl2·xH2O:

Moles of water / Moles of anhydrous salt = x

0.0119 mol / 0.00279 mol = x

x ≈ 4.27

Therefore, the formula of the hydrate is NiCl2·4.27H2O. The name of the hydrate is nickel (II) chloride tetrahydrate.

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The electric current is  0.025 A

Electric current refers back to the go with the flow of energy in an electronic circuit and to the amount of strength flowing through a circuit. it's far measured in amperes (A). the bigger the cost in amperes, the more energy is flowing within the circuit.

Ag+ + e¯ →Ag

1F deposits 107.87 g/mol (molecular mass) of silver

1F = 96500 C

Let, 107.87 g/mol needed = 96500 C

Number of coulombs required to deposit 0.3650 g of silver =(96500/107.87) 0.3650  

Q = 326.5 C

According to Faraday’s law, Q = I x t

I = 326.5 C / (216 x 60 s) = 0.025 A

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Answer:

a. -0.63 V

b. No

Explanation:

Step 1: Given data

Step 2: Calculate the required standard reduction potential of the cathode

The galvanic cell must provide at least 0.70V of electrical power, that is:

E°cell > 0.70 V    [1]

We can calculate the standard reduction potential of the cathode (E°cat) using the following expression.

E°cell = E°cat - E°an   [2]

If we combine [1] and [2], we get,

E°cat - E°an > 0.70 V

E°cat > 0.70 V + E°an

E°cat > 0.70 V + (-1.33 V)

E°cat > -0.63 V

The minimum E°cat is -0.63 V and there is no maximum E°cat.

Answer:

In physics, work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, it is often represented as the product of force and displacement. A force is said to do positive work if (when applied) it has a component in the direction of the displacement of the point of application.

Explanation:

Hi!!

work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement

Answer:

1.059 x 10^24 formula units

Explanation:

103/58.44 = 1.76 moles NaCl

1.76 x 6.022 x 10^23 = 1.059 x 10^24

Answer:

Solid

Explanation:

Cus its solid, take a brick for example. It's hard and has no space unlike liquid or gas.

The amount of heat energy required required to convert 72.0 g

of ice at − 18° C to water at 25° C is 31.9 kJ.

To calculate the amount of heat energy required to convert 72.0 g of ice at −18.0°C to water at 25.0°C, we need to consider two separate processes: first, the energy required to melt the ice (i.e., to convert it from a solid to a liquid), and second, the energy required to heat the liquid water from its initial temperature of 0°C to its final temperature of 25°C.

The energy required to melt the ice can be calculated using the formula:

\(Q1 = m × ΔH_fus\)

where Q1 is the heat energy required (in joules), m is the mass of the ice (72.0 g), and\(ΔH_fus\)is the heat of fusion of water (334 J/g).

Q1 = 72.0 g × 334 J/g = 24,048 J = 24.05 kJ

The energy required to heat the liquid water from 0°C to 25°C can be calculated using the formula:

\(Q2 = m × C × ΔT\)

where Q2 is the heat energy required (in joules), m is the mass of the water (also 72.0 g), C is the specific heat capacity of water (4.184 J/g°C), and ΔT is the change in temperature (25°C - 0°C = 25°C).

Q2 = 72.0 g × 4.184 J/g°C × 25°C = 7,845.6 J = 7.85 kJ

Therefore, the total heat energy required to convert 72.0 g of ice at −18.0°C to water at 25.0°C is:

\(Q_total = Q1 + Q2\) = 24.05 kJ + 7.85 kJ = 31.9 kJ

Therefore, the amount of heat energy required is 31.9 kJ.

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The average speeds of gas molecules in cylinders A, B, C, and D are 0.03 m/s, 0.009 m/s, 0.1 m/s, and 1.5 m/s respectively. Cylinder A contains gas that is closest to absolute zero.

Absolute zero, often known as 0 kelvin, is the lowest point on the thermodynamic temperature scale, when the enthalpy as well as entropy of a cooled ideal gas reach their lowest values.

According to international treaty, absolute zero is defined as 273.15 degrees Celsius, which really is equivalent to 459.67 degrees Fahrenheit. The average speeds of gas molecules in cylinders A, B, C, and D are 0.03 m/s, 0.009 m/s, 0.1 m/s, and 1.5 m/s respectively. Cylinder A contains gas that is closest to absolute zero.

Therefore, Cylinder A contains gas that is closest to absolute zero.

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