What are 2 substances that can CAN conduct electricity? Plz explain.

The new pressure of the helium gas in the 2.00 L container is 0.494 atm.

What is new pressure?

According to Boyle's Law, for a fixed amount of gas at a constant temperature, the pressure and volume of the gas are inversely proportional to each other.

Using Boyle's Law, we can write:

P1V1 = P2V2

where P1 and V1 are the initial pressure and volume of the gas, and P2 and V2 are the new pressure and volume of the gas, respectively.

Given that the initial pressure P1 is 0.988 atm and the initial volume V1 is 1.00 L, and the new volume V2 is 2.00 L, we can solve for the new pressure P2 as follows:

P1V1 = P2V2

0.988 atm × 1.00 L = P2 × 2.00 L

P2 = (0.988 atm × 1.00 L) / 2.00 L

P2 = 0.494 atm

Therefore, the new pressure of the helium gas in the 2.00 L container is 0.494 atm.

What is volume of the gas?

The volume of a gas refers to the amount of space that the gas occupies. The volume of a gas can be measured in a number of ways, depending on the conditions under which the gas is being measured.

At standard temperature and pressure (STP), which is defined as 0°C (273.15 K) and 1 atmosphere (atm) of pressure, the volume of 1 mole of any gas is 22.4 liters (L). This is known as the molar volume of a gas at STP.

The volume of a gas can vary depending on the temperature, pressure, and the amount of gas present. As a general rule, the volume of a gas will increase as the temperature increases and/or the pressure decreases, and will decrease as the temperature decreases and/or the pressure increases.

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Chemical reaction is the term which describes the conversion of substances into different substances.

Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.

There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical reactions:

1) inorganic reactions

2)organic reactions

3) biochemical reactions

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Answer:2

Explanation:

To accomplish step 1 of this organic synthesis reaction, the necessary reagent is sodium hydride (NaH). This is a strong base commonly used in organic synthesis to remove acidic hydrogen atoms and form new carbon-carbon bonds. In this reaction, NaH is used to deprotonate the alpha carbon of the ketone, forming an enolate ion.

The enolate ion then attacks the electrophilic carbon of the ester in an aldol condensation reaction, resulting in the formation of a beta-hydroxyketone product.
NaH is preferred over other bases because it is highly reactive and can be easily removed from the reaction mixture by filtration. Additionally, it does not add any unwanted byproducts to the reaction, making it a clean and efficient choice. Other bases, such as potassium tert-butoxide or lithium diisopropylamide (LDA), could also be used in this reaction, but NaH is often the preferred choice due to its high reactivity and ease of use.

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The balanced chemical reaction is Al + 3AgNO3 → Al (NO3)3 + 3Ag.

A balanced chemical equation though has the identical number of atoms from every type inside the reaction on both the reactant chemical equation output sides. In a balanced chemical equation, both the mass and the change were equal.

An organic organization may adjust to changes in its surroundings very easily. It is distinguished by low complexity, low centralization, as well as low formalization. A mechanistic organization, on the other hand, is distinguished by great complexity, high centralization, as well as high formalization.

Thus, the balanced chemical reaction will be Al + 3AgNO3 → Al (NO3)3 + 3Ag.

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The balanced chemical equation is the equation where the atoms in the reactant side is equals to the atoms in the product side.

The steps to balance the chemical equation is given as :

1) Count each the type of atom in the reactants and products.  The  number of each atom on both sides are equal or not and If not, then the equation is not balanced.

2) Place coefficients, in front of the symbols or the formulas to increase the number of atoms or the molecules of the substances. write the smallest coefficients possible. do not  the subscripts in chemical formulas.

3) Repeat steps until you get the balanced equation.

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The color can be seen and the color of the light is blue. The frequency of the light was obtained as  6.9 * 10^14 Hz.

The visible radiation range, also known as the visible spectrum, is the range of electromagnetic radiation that can be detected by the human eye. This range of wavelengths corresponds to the colors of the rainbow: red, orange, yellow, green, blue, indigo, and violet.

The colors that we see are determined by the wavelength of the light that reaches our eyes. Light with longer wavelengths appears as red or orange, while shorter wavelengths appear as blue or violet. The different colors of the visible spectrum can be combined to create all the other colors that we see.

Given that;

c = fλ

f =  3 * 10^8/4.36x10^-7 m

f = 6.9 * 10^14 Hz

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Moles of Na_2O

2 mols Na_2O produces 1 mol sodium carbonate.

1 mol sodium oxide produces 0.5mol sodium carbonate

Moles of sodium carbonate

Molar mass

Mass

Cis-trans isomers are a subtype of geometric isomers in which two similar groups on the same atom are arranged differently in space. In the cis form, the two groups are on the same side of the molecule, whereas in the trans form, they are on opposing sides.

Using the structural formula of the following substances, we need to explain which ones can exist as cis-trans isomers:1-chloropropane: CH3CH2CH2Cl can have cis-trans isomers because the Cl atom is attached to the second carbon atom, and there are two different groups attached to that carbon atom.2-chloropropane: CH3CHClCH3 can have cis-trans isomers because the Cl atom is attached to the second carbon atom, and there are two different groups attached to that carbon atom.

1-pentene: CH3CH2CH=CHCH3 can have cis-trans isomers because there is a double bond between the 3rd and 4th carbon atoms, and there are two different groups attached to the carbon atoms adjacent to the double bond.2-pentene: CH3CH=CHCH2CH3 can have cis-trans isomers because there is a double bond between the 2nd and 3rd carbon atoms, and there are two different groups attached to the carbon atoms adjacent to the double bond.

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Answer:

P2 = 2.25 atm

Explanation:

Given:

V1 = 1.5 L. V2 = 2.0 L

P1 = 3.0 atm. P2 = ?

Use Boyle's law and solve for P2:

P1V1 = P2V2

or

P2 = (V1/V2)P1

= (1.5 L/2.0L)(3.0 atm)

= 2.25 atm

Answer:

PbCO₃ + 2HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O

Explanation:

From the question given above:

Solid lead (II) carbonate reacts with a dilute solution of nitric acid (HNO₃) to give a solution of lead (II) nitrate,

carbon dioxide and water.

The above can be represented in the equation form as follow:

PbCO₃ + HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O

Finally, we shall balance the equation as follow:

PbCO₃ + HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O

There are 2 atoms of H on the right side and 1 atom on the left side. It can be balance by putting 2 in front of HNO₃ as shown below:

PbCO₃ + 2HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O

Now, the equation is balanced.

The molarity of the solution : 1.2 M

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\(\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}\)

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

mass of NaCl=35 g

Volume of solution = 0.5 L

mol NaCl(MW=58.44 g/mol) :

\(\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{35}{58.44}\\\\mol=0.6\)

The molarity :

\(\tt M=\dfrac{0.6}{0.5}=1.2\)

The unknown monoprotic acid has a molecular mass of 87.84 g/moles. Butyric acid is a monoprotic acid with a mass of approximately 87.84 g/mol.

When the monoprotic acid has been completely utilized, the endpoint by the addition of NaOH has been reached. Because the NaOH is monobasic. The moles of NaOH and acid will be the same.

Moles of NaOH = moles of acid

The molarity of NaOH = 0.15 M

Volume of NaOH = 41.21 ml

Molarity = Moles/ Volume

Moles = molarity X volume (L)

Moles of NaOH = 0.15X 0.04121 L

= 0.00618 moles

Moles of NaOH = moles of acid

moles of acid = 0.00618 moles.

Mass of acid dissolved = 0.543 grams

Molecular weight of acid = weight/moles

=0.543/0.00618

= 87.84 g/moles.

The acid with the molecular mass of 87.84 g/mol with being the monoprotic acid can be butyric acid. The butyric acid has a molecular weight of 88 g/mol.

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The number of valence electron pairs in the outermost shell, as determined by the valence shell electron repulsion theory (VSEPR), determines the molecular shape.

By analyzing the repulsion between bond electron pairs in the outermost electron shell, a process known as the molecular shape can determine the shape of a molecule. Because most physical and chemical properties are influenced by molecular shape, it is crucial to study molecular shape or geometry.

The foundation of VSEPR is minimizing the strength of the electron-pair repulsion surrounding the central atom under consideration. The foundation of the VSEPR theory is the notion that the geometry (shape) of a molecule is primarily determined by the repulsion between the pairs of electrons surrounding a central atom.

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Answer:

Inventing gadgets to make their work easier.

Protecting the country using bombs and guns.

Explanation:

Answer:

mass

Explanation:

The triple beam balance is an instrument used to measure mass very precisely.

The thermal energy of one system must be the same as the thermal energy of the other system. Therefore, the correct option is option D.

A pan heats up when you place it on the flame. It's because heat is transferred from the burner to the pan. Additionally, it allows any other utensil or pan to heat up. But after a while, the vessel cools down when you remove it from the heat. It happens because the vessel's heat is dissipated onto the surrounding area. It enables the vessel to cool.

Heat that flows by conduction is the transfer of thermal energy between substances in contact. The thermal energy of one system must be the same as the thermal energy of the other system.

Therefore, the correct option is option D.

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Answer:

A. stimulants

Explanation:

The cube is among the five Platonic solids. 0.56g/cm³ is the density if a 2.5cm cube of bone weighs 8.75g.

A cube is indeed a three-dimensional physical block having six square faces, facets, or sides, three of which meet at each vertex. It is a hexagon when viewed from a corner, and its net is commonly portrayed as a cross.

The cube is among the five Platonic solids and the only regular hexahedron. It has six faces, twelve edges, and eight vertices. In addition, the cube is a square parallelepiped, a equilateral cuboid, a right rhombohedron, and a 3-zonohedron.

density= mass/ volume

volume of cube =2.5×2.5×2.5=15.62cm³

density=  8.75/ 15.62=0.56g/cm³

Therefore, 0.56g/cm³  is the density if a 2.5cm cube of bone weighs 8.75g.

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As per the balanced chemical equation of the reaction, 6 moles of carbon dioxide gives one mole of glucose. 18 moles  or 762 g of carbon dioxide are needed to give 3 moles of glucose.

In photosynthetic reaction, 6 moles of water and 6 moles of carbon dioxide combines together to give one mole of glucose and 6 moles of oxygen gas.

molar mass of carbon dioxide = 44 g

mass of 6 moles  = 44 × 6 = 264 g.

no.of moles of carbon dioxide for 3 moles of glucose is 18 moles. Then,

mass of 18 moles of carbon dioxide  = 18  × 44 = 792 g.

Therefore, 792 g of carbon dioxide is needed to produce 3 moles of glucose. Hence, option B is correct.

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For the given data, (a) the volume of the aeration tank should be 25,000 m3, (b) the desired sludge age is 5 days, (c) the rate of waste activated sludge production is 1,000 m3/day.

(a) Volume of the aeration tank

The volume of the aeration tank can be calculated using the following equation : V = Q * θc / (Y * (X - S0) * (1 - Y))

where:

V is the volume of the aeration tank (m3)

Q is the flow rate (m3/day)

θc is the desired sludge age (days)

Y is the fraction of substrate removed (0.5)

X is the mixed liquor suspended solids concentration (mg/L)

S0 is the influent substrate concentration (mg/L)

Plugging in the given values, we get :

V = 5000 m3/day * 10 days / (0.5 * (4000 mg/L - 300 mg/L) * (1 - 0.5)) = 25000 m3

Therefore, the volume of the aeration tank should be 25,000 m3.

(b) The sludge age can be calculated using the following equation : θc = V / Q

where:

θc is the sludge age (days)

V is the volume of the aeration tank (m3)

Q is the flow rate (m3/day)

Plugging in the given values, we get:

θc = 25000 m3 / 5000 m3/day = 5 days

Therefore, the desired sludge age is 5 days.

(c) The amount of waste activated sludge can be calculated using the following equation : Qr = Q * Y * (X - S0) / (1 - Y)

where:

Qr is the rate of waste activated sludge production (m3/day)

Q is the flow rate (m3/day)

Y is the fraction of substrate removed (0.5)

X is the mixed liquor suspended solids concentration (mg/L)

S0 is the influent substrate concentration (mg/L)

Plugging in the given values, we get:

Qr = 5000 m3/day * 0.5 * (4000 mg/L - 300 mg/L) / (1 - 0.5) = 1000 m3/day

Therefore, the rate of waste activated sludge production is 1,000 m3/day.

Thus, for the given data, (a) the volume of the aeration tank should be 25,000 m3, (b) the desired sludge age is 5 days, (c) the rate of waste activated sludge production is 1,000 m3/day.

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Answer:

C. Cl

Explanation:

B(boron) is 2.04

C(carbon) is 2.55

Cl(chlorine) is 3.16

so it is Cl(clorine).

Answer:

D

Explanation:

Valency is the combining power of an element

Answer:

Lathanum

Explanation:

Up and straight across  is the best prediction of the algal growth if nitrate is added instead of phosphate.

Option A is correct.

Excess nutrients from fertilizer, wastewater, and stormwater runoff, combined with a lot of sunlight, warm temperatures, and shallow, slow-moving water, can cause dramatic algal blooms.

Algal blooms and elevated nutrient levels can also contaminate drinking water in communities downstream from dead zones. Toxins released by harmful algal blooms contaminate drinking water and cause illness in humans and animals.

which of the following is the best prediction of the algal growth if nitrate is added instead of phosphate?

A. Up and straight across

B. below and straight

C. Up and side across.

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Answer:

Explanation:

Warm lake vapor pressure is higher than cold lake vapor pressure because it evaporates more quickly. In other words, as the temperature of warm water increases, the kinetic energy of the warm water molecule also increases. As the kinetic energy of the warm water molecule increases, the number of molecules conversion into a vapor also increases, thereby increasing the vapor pressure of warm water.

Answer:

B.

Warm water evaporates more quickly.

Explanation:

i got it right on edmentum!!

The volume of gas in the tank is determined as 1.78 L.

The volume of gas in the tank is calculated by applying idle gas law as follows;

PV = nRT

where;

n = reacting mass / molar mass

n = (300 g) / (3 x 16 g)

n = (300 g) / (48 g/mol)

n = 6.25 moles

The volume of the gas is calculated as follows;

V = nRT/P

V = (6.25 x 8.314 x 214.25)/(6250)

V = 1.78 L

Thus, the volume of ideal gas increases with increase in temperature.

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Answer: I guess have to like explain to her why to not stick the fork into the toaster.

Explanation:

Hope this helps

Answer:

its just how would you explain how it happens how the electricity passes through the fork but in a easy understandable way

Explanation:

for example... dont do that because......................then will go through the fork then to your arm and will cause....................... then you die

Answer:

numbers of molecules = 3×6.023×10-23

When equilibrium between the dissolved and undissolved solute is reached, the solution must be saturated

A saturated solution is a solution that generally contains the maximum amount of solute that can be dissolved under the condition of a solution at which the solution exists. After studying solutions and properties of the solution, one can understand that a solution can reach a status of saturation.

The saturation phase is when all of the solute is completely dissolved in the solution and when we keep adding more and more excess of the solute into the solution then the solute will stop dissolving itself as now it has reached a saturation level after which no dissolution will take place.

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