Question is in the image

Answer:

1.2 cm^3

Explanation:

5.74 grams of a something occupies a volume of 1.2 cm^3 .

According to Charle's law, the volume of the given mass of a gas is directly proportional to its absolute temperature provided that the pressure is constant. Mathemically;

where;

V1 and V2 are the initial and final volume of the gas

T1 and T2 are the initial and final temperatures of the gas (in Kelvin)

Given the following parameters:

Substitute the given parameters into the formula;

Therefore the volume of the gas at 20°C is approximately 97.67cm³

Answer:

the covalent molecule has OA.A

Answer:

B

Explanation:

Chemical and physical element properties are determined by their valence electrons metals with only one valence electron are poor conductors of electricity. Option B is correct.

Valence electrons are the electrons present at the valance shell or orbit of the atom and always take part in the chemical reaction or reaction with other metals and can conduct electricity.

If the atom contains only one valance electron in the outermost shell or valance shell then it cannot conduct the electricity properly due to the fewer number of electrons.

Therefore, Option B is correct. Chemical and physical element properties are determined by their valence electrons metals with only one valence electron are poor conductors of electricity.

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Answer:

C=C divided by the co effiecient 11 would make the denominator of the photosynthesis equal 11 over 5 making this problem a polywhirl which wouldnt matter in the sense of the quake in energy change so thus making the answer 728 kJ/mol

Explanation: back in my day

Answer:

Pizza is difintly a mixture the other i have no idea..im pretty sure CO2 is a substance btw im sorry I wish I could help more Hope this helps! :)

Explanation:

Answer:

Mixture

?

Pure

Pure

Pure

Pure

Mixture

Mixture

Pure

Pure

Mixture

Pure

Explanation:The answers are on google. Im not sure what they mean by hunter.

Answer:

Explanation:

Filtration is any of various mechanical, physical or biological operations that separate solids from fluids (liquids or gases) by adding a medium through which only the fluid can pass. The fluid that passes through is called the filtrate.[1] In physical filters oversize solids in the fluid are retained and in biological filters particulates are trapped and ingested and metabolites are retained and removed. However, the separation is not complete; solids will be contaminated with some fluid and filtrate will contain fine particles (depending on the pore size, filter thickness and biological activity). Filtration occurs both in nature and in engineered systems; there are biological, geological, and industrial forms. For example, in animals (including humans), renal filtration removes wastes from the blood, and in water treatment and sewage treatment, undesirable constituents are removed by absorption into a biological film grown on or in the filter medium, as in slow sand filtration.

The required heat in BTU, for the water at 50°C to become ice at -50°C is 209 BTU/lb.

To determine the required heat in BTU, for the water at 50°C to become ice at -50°C, we need to calculate the heat of fusion and the heat of cooling of water. We can use the following formula to calculate the required heat.

Q = mL

Where:Q is the required heat in BTU.

m is the mass of water in pounds.L is the specific heat of water at the desired temperature.

Lf is the heat of fusion of water.

Lc is the specific heat of ice.

Using the above formula, we get;

Q = mLf + mL + mLc

The heat of fusion of water is 144 BTU/lb

The specific heat of water at 50°C is 1.00 BTU/lb °F.

The specific heat of ice is 0.5 BTU/lb°F.

We know that: 1°C = 1.8°F.

So,50°C = 122°F and -50°C = -58°F

Also, the mass of water is not given, so let us assume that the mass of water is 1 lb.

Thus;

Q = mLf + mL + mLc

Q = 1(144) + 1(1.00)(122-32) + 1(0.5)(-50-0)

Q = 144 + 90 + (-25)

Q = 209 BTU/lb

Therefore, the required heat in BTU, for the water at 50°C to become ice at -50°C is 209 BTU/lb.

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If The Excellence Cοrpοratiοn fοr Servicing Excellence sells the οffice furniture fοr $6,000, they wοuld recοgnize a lοss οf $1,000 οn the sale.

The recοgnitiοn οf the sale οf the οffice furniture by The Excellence Cοrpοratiοn fοr Servicing Excellence wοuld invοlve the fοllοwing:

The calculatiοn οf the gain οr lοss οn the sale:

Prοceeds frοm the sale: $6,000

Cοst οf the furniture: $10,000

Accumulated amοrtizatiοn: $5,000

Calculatiοn:

Gain/Lοss οn sale = Prοceeds frοm sale - (Cοst οf furniture - Accumulated amοrtizatiοn)

Gain/Lοss οn sale = $6,000 - ($10,000 - $5,000)

Gain/Lοss οn sale = $6,000 - $5,000

Gain/Lοss οn sale = $1,000

Determining the nature οf the gain οr lοss:

Since the prοceeds frοm the sale ($6,000) are less than the carrying value οf the asset ($10,000 - $5,000 = $5,000), a lοss will be recοgnized οn the sale.

Therefοre, if The Excellence Cοrpοratiοn fοr Servicing Excellence sells the οffice furniture fοr $6,000, they wοuld recοgnize a lοss οf $1,000 οn the sale.

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The kinetic molecular theory of matter explains the physical properties of matter and how they relate to their molecular structures. This theory states that matter is made up of tiny particles, called molecules, that are always in constant motion, even when in a solid state.

The kinetic molecular theory of matter helps in explaining the properties of matter and how it relates to the molecular structures of matter. According to this theory, the particles that make up matter are in constant motion regardless of their state of matter, and their motion is related to the state of matter they exist in. The theory is divided into three main postulates as follows:1. Matter is made up of tiny particles called molecules that are in constant motion, even when in a solid state.2. The movement of these particles increases with an increase in temperature, resulting in an increase in the kinetic energy of the particles.3.

The collisions between these particles and the walls of the container they are in result in the pressure exerted by the gas. The relationship between heat, energy, and temperature as part of the kinetic molecular theory is as follows:Heat is the transfer of energy between different systems, whereas temperature is the measure of the average kinetic energy of the particles in a system. This means that as heat is transferred into a system, the particles in that system will gain kinetic energy, which will lead to an increase in temperature.

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Answer:

the octet rule is a chemical rule of thumb that reflects the observation that main group elements and bonds and such a way that each has a electrons in its valence shell giving the same electronic configuration as noble gas

Answer:

Reactants are starting materials and are written on the left-hand side of the equation. Products are the end result of the reaction and are written on the right-hand side of the equation.

Answer:

C.

Explanation:

Answer:

circuit

electric current

voltage difference

ohms law

resistance ​

Explanation:

Circuit - a roughly circular line, route, or movement that starts and finishes at the same place.

Electric current - A net unidirectional movement of electrons, or other charge carriers, caused by a potential difference

Voltage difference - A potential difference of one Volt is equal to one Joule of energy being used by one Coulomb of charge when it flows between two points in a circuit.

Ohms law -a law stating that electric current is proportional to voltage and inversely proportional to resistance.

Resistance - The refusal to accept or comply with something; the attempt to prevent something by action or argument.

At 30°C, the reaction's activation energy is decreased by \(\frac{9.7 kJ}{mol}\) by the addition of a catalyst if the catalyst triples the reaction rate.

This can be determined using the Arrhenius equation, which relates the rate constant (k) of a reaction to its activation energy (Ea), the temperature (T), and the gas constant (R):
k = A e^\((\frac{-Ea}{RT})\)
Where A is the pre-exponential factor and e is the base of the natural logarithm.
If the catalyst triples the reaction rate, then the rate constant with the catalyst (k') is three times the rate constant without the catalyst (k):
k' = 3k
Substituting the Arrhenius equation for both k and k' gives:
A e^\((\frac{-Ea}{RT})\) = 3A e^\((\frac{-Ea}{RT})\)
Dividing both sides by A and rearranging gives:
e^\((\frac{-Ea}{RT})\) / e^\((\frac{-Ea}{RT})\) = 3
Taking the natural logarithm of both sides gives:
\((\frac{-Ea}{RT})\) + \((\frac{Ea}{RT})\) = ln(3)
Solving for Ea' gives:
Ea' = Ea - RT ln(3)
Plugging in the values for R (\(\frac{8.314 J}{mol K}\)) and T (303 K) gives:
Ea' = Ea - (\(\frac{8.314 J}{mol K}\))(303 K) ln(3)
Ea' = Ea - \(\frac{9703 J}{mol}\)
Ea' = Ea - \(\frac{9.7 kJ}{mol}\)
Therefore, the activation energy is decreased by \(\frac{9.7 kJ}{mol}\) by the addition of the catalyst.

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To solve this problem we are going to assume that the temperature at which the gold is found is room temperature.

We are going to use a property of materials that relates mass to volume, this is density. At this temperature, the density of gold is 19.3g/mL, the equation of density is:

We will use the following conversion factors:

1mL=1000mm^3

1atom=3.271x10^-22g

So, the atoms present in 3.00mm^2 will be:

In 3.00mm^3 of gold, there are 1.77x10^20 atoms

Answer: 1.77x10^20 atoms

Answer:

Liquid to Gas

Explanation:

The drink in the soda is a liquid and when you open the can, the CO2 leaves the container.

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somethingExplanation:

Answer: The concentration of the acid Vincent produced is 0.083 M.

Explanation:

Given: Mass = 6.5 g

Volume = 600.0 mL (1 mL = 0.001 L) = 0.6 L

Moles is the mass of substance divided by its molar mass. So, moles of bromic acid (molar mass = 128.91 g/mol) are calculated as follows.

\(Moles = \frac{mass}{molar mass}\\= \frac{6.5 g}{128.91 g/mol}\\= 0.05 mol\)

Molarity is the number of moles of a substance present in liter of a solution.

Therefore, molarity (concentration) of the given solution is calculated as follows.

\(Molarity = \frac{no. of moles}{Volume (in L)}\\= \frac{0.05 mol}{0.6 L}\\= 0.083 M\)

Thus, we can conclude that the concentration of the acid Vincent produced is 0.083 M.

Answer:

B). The rocks are being chemically weathered by the water.

Explanation:

Because the water is slowly destroying the rock

The model used to determine molecular shape based on minimizing the repulsion of shared and unshared electron pairs around the central atom is the Valence Shell Electron Pair Repulsion (VSEPR) theory.

According to the VSEPR theory, electron pairs (both bonding and nonbonding) around the central atom repel each other and tend to position themselves as far apart as possible to minimize this repulsion. By considering the number of bonding and nonbonding electron pairs, the VSEPR theory predicts the molecular geometry or shape of a molecule.

The VSEPR theory allows us to determine whether the molecular shape is linear, trigonal planar, tetrahedral, trigonal bipyramidal, octahedral, or other shapes, depending on the arrangement of electron pairs. This model is widely used to understand and predict the shapes of molecules and their properties.

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Answer:

B

Explanation:

carbon 12 is most useful to humans

Answer:

1.08 x 10^2 gm of H2O

Explanation:

number of moles of O2 = 97g /32 g/moles = 3.03 moles

3.03 moles of O2 produces 6.06 moles of H2O

amount of water produced = 6.06 mol x 18 g /mol = 109.08 g = 1.08 x 10^2 g

The value of ΔH for the reaction if 5 (g) → if 3 (g) f 2 (g) is -355kJ.

Here's how we get to the solution:

To find the value of ΔH for the reaction if 5 (g) → if 3 (g) f 2 (g), we need to add the equations (1) and (2), as shown below:

if (g) f2 (g) → if3 (g) ΔH1 = -390 kJ ... equation (1)(g) 2f2 (g) → if5 (g) ΔH2 = -745 kJ ... equation (2)

Reversing equation (1), we get:if 3 (g) → if (g) f2 (g) ΔH3 = +390 kJ

Adding equation (2) and the reversed equation (1), we get:

if 3 (g) → if (g) f2 (g) ΔH3 = +390 kJ(g) 2f2 (g) → if5 (g) ΔH2 = -745 kJ-------------------------------------if 3 (g)

2f2 (g) → if5 (g) f2 (g) ΔH = -355 kJ

Thus, the value of ΔH for the reaction if 5 (g) → if 3 (g) f 2 (g) is -355 kJ.

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Answer:

B A B  sorry if its wrong

Explanation:

Circuits can be connected in series or parallel but the maximum voltage is obtained in series connection, thus, light bulbs shine brightest in series connection.

A parallel circuit connection is one in which the terminals of all the components in th circuit meet at two points.

The components are parallel to each other and current flows in multiple directions.

A series connection in a circuit is one in which the terminals of the component parts in a circuit are joined end to end. Current flows in one direction.

The voltage in a series connection is the sum of all the individual cells, therefore, the light bulb in series connection shines brightest.

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