g You have decided to add ethidium bromide directly to your agarose solution before you pour you gel. You have a stock solution of 6 mg/ml and you want a final concentration of 0.5 g/ml in your 50 ml agarose solution. Calculate how much of the stock solution you will need to make add to the agarose solution to give you a final concentration of 0.5 g/ml.

Answer:

one to two inches (three to five centimeters) per year.

Explanation:

Answer:

1 to 2 inches (3 to 5 centimeters) per year

Explanation:

It depends on what plates your talking about, but in general, they move apart anywhere from 1 to 2 inches (3 to 5 centimeters) per year.

Specifically, though, The Arctic Ridge has the slowest rate (less than 2.5 cm/yr), and the East Pacific Rise near Easter Island, in the South Pacific about 3,400 km west of Chile, has the fastest rate (more than 15 cm/yr).

We have to form the salt ammonium sulfate. The formula of the ammonium ion is NH₄⁺ and the formula of the sulfate ion is SO₄²⁻.

Ammonium cation has one positive charge and the sulfate ion has two negative charges. To make a neutral compound we will have to combine two ammonium ions with one sulfate.

Answer: the formula of ammonium sulfate is (NH₄)₂SO₄

Answer:

[(NH₄)₂ SO₄]

Explanation:

732.806 g of CuSO4 is greater than the maximum amount of CuSO4 that can dissolve (355.25 g), 1750 mL of water would not be able to dissolve 4.6 moles of CuSO4. The solution would become saturated, and any excess CuSO4 would likely remain undissolved as a solid precipitate.

To determine if 1750 mL of water can dissolve 4.6 moles of Copper Sulfate (CuSO4), we need to consider the solubility of CuSO4 in water.

The solubility of a compound indicates the maximum amount of that compound that can dissolve in a given amount of solvent at a specific temperature. In this case, we need to compare the solubility of CuSO4 with the amount we want to dissolve.

Assuming the solubility of CuSO4 in water is 203 g/L at a given temperature, we can calculate the maximum amount of CuSO4 that can dissolve in 1750 mL (1.75 L) of water:

Maximum amount of CuSO4 = Solubility of CuSO4 * Volume of water

Maximum amount of CuSO4 = 203 g/L * 1.75 L = 355.25 g

Next, we can convert the moles of CuSO4 to grams using its molar mass of 159.61 g/mol:

Mass of CuSO4 = Moles of CuSO4 * Molar mass of CuSO4

Mass of CuSO4 = 4.6 mol * 159.61 g/mol = 732.806 g

Since 732.806 g of CuSO4 is greater than the maximum amount of CuSO4 that can dissolve (355.25 g), 1750 mL of water would not be able to dissolve 4.6 moles of CuSO4. The solution would become saturated, and any excess CuSO4 would likely remain undissolved as a solid precipitate.

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The minimum liter of water that must pass through a sample of the compound at 35.2°C to vaporize 1.0 mg of the compound is 0.44 L.

To answer this question, use the ideal gas sales formula:

                                          PV=nRT

P is the ideal gas pressure (Pa).

V is the ideal gas volume (m³).

n is the number of moles of particles (mol).

R is the ideal gas constant with the R value for all gases being the same. R = 8.314 x 10³J/kmol.K.

T is the ideal gas temperature (K).

Using the ideal gas equation

T = 35.2 + 273 = 308.2 K

The molar mass of methyl salicylate = 152.15 gm/mol

number of moles: n = 1 mg/152.15 gm/mol = 6.57 * 10^(-6) mol

PV = nRT

0.278/760 * V = (6.57 * 10^(-6)) * 0.0821 * 308.2

3.6 x 10-4 * V = 1.6x 10-4

                  V = 1.6x 10-4/3.6 x 10-4

                  V = 0.44 L

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Based on the mole ratio of the balanced equation of the reaction,

The mole ratio of the reaction is obtained from the balanced equation of the reaction as follows:

Balanced equation of reaction: 2 C₂H₆ + 7 O₂ ------> 4 CO₂ + 6 H₂O

From the balanced equation of the reaction, the mole ratio of the reaction shows that 2 moles of ethane, C₂H₆, undergo combustion with 7 moles of oxygen, O₂, to produce 4 moles of carbon (iv) oxide, CO₂, and 6 moles of water, H₂O.

Hence;

4.5 moles of ethane will require 4.5 * 7/2 moles of oxygen

moles of oxygen required = 15.75 moles of oxygen

Moles of carbon (iv) oxide, CO₂, produced = 4.5 * 4/2

Moles of carbon (iv) oxide, CO₂, produced = 9 moles

Moles of water, H₂O, produced = 4.5 * 6/2

Moles of water, H₂O, produced = 13.5 moles

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Answer:

Light is a form of energy, and energy is neither created nor destroyed. Instead, energy can change from one type to another.This means that another type of energy is transformed into visible light.

Regardless of the source of energy, light is produced in basically two steps:

1. An atom’s electron absorbs energy and becomes energized, or excited. When this happens, the excited electron moves from its ground state (normal position around the nucleus) to an excited state (position farther from the nucleus.2. The excited electron emits the energizing energy as photons of visible light. The bow de-energized electron returns to is ground state, which is its normal distance from the nucleus.

For the light production to be continuous instead of just a light flash, the energizing source of energy must be continuous.

If heat is the original source of energizing energy, the light produced is called incandescent light.

If the original energy source is not heat, then the light produced is called luminescent light, also called “cold light.”

In this question, we have 8.1*10^24 particles of C4H8O4, we need to find the number of moles present in this amount of particles:

1 mol = 6.022*10^23

x moles = 8.1*10^24

x = 13.45 moles of C4H8O4

Now using its molar mass, 120.1g/mol, we will find the final mass:

120.1g = 1 mol

x grams = 13.45 moles

x = 1615 grams of C4H8O4

Alkane is any acyclic saturated hydrocarbon (methane, ethane, etc.) with the carbon to carbon single bond functional group.

According to the above structural formula, a 7-carbon atom is given with two substitute groups (ethyl and methyl) attached to carbon 4 and 3 respectively.

A structural isomer is an isomer in which the same atoms are arranged in different orders, either having the same or different functional groups.

Pentane is a structural isomer of the structure 4 because it has same number of carbon (5) and hydrogen (12) atoms.

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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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Answer:

Two positive aspects of using methane recapture systems are able to generate significant electricity. Another benefit is that the process of anaerobic digestion creates heat that can be used to warm buildings where animals are kept

Answer:  The correct answer is;

Two positive aspects of using methane recapture systems include lowering the impact on greenhouse gasses and the production of energy. Methane is a very potent greenhouse gas that is contributing to global warming. As a result, the recapturing process reduces the methane impacts of global warming by reclaiming and reusing the gas for other purposes. Recaptured methane can be stored and used to generate electricity or used as fuel to power updated vehicles and other engines on the farm. The overall benefits from this combination are reducing impacts causing global warming and lower the cost of electricity or fuel on the farm.

Explanation:  This answer has been confirmed correct.

Answer:As nouns the difference between winnowing and sieving. is that winnowing is the act of separating chaff from grain while sieving is the act of passing something through a sieve. ... Winnowing is used to separate heavier and lighter components of a mixture by wind or blowing air.

Explanation:

Answer:

Winnowing is the separation of solid-solid separated by size and weight whereas sieving is the separation solid-liquid judged by shape and size

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The mass percent of MgCO3 in the mixture is 18.33%.

In the mixture we have:

MgCO3 + (NH4)2CO3 but the percentage by mass of carbonate CO3 is 64.16%

Hence,

Total mass = 100 grams

Let the mass of MgCO3 = x grams

Let the mass of (NH4)2CO3 = y grams

So we have,       x + y = 100 ------------(1)

If the mass of CO3 = 64.16% = 64.16 g

But the molar mass of CO3 = 60 g/mol

Then,

Number of moles of CO3 = 64.16 g/60 g.mol-1 = 1.069 moles

Since we obtained the number of moles of CO3 from CO3 in MgCO3 and (NH4)2CO3.

Therefore,

moles MgCO3 + moles (NH4)2CO3 = 1.069

mass of MgCO3 present/molar mass MgCO3 + mass of (NH4)2 CO3 present/molar mass = 1.069

So,

x/84 + y/96 = 1.069---------(2)

From equation 1;

 y =100 - x  

x/84 + (100-x)/96 = 1.069

x = 18.33 g

Mass of MgCO3 = 18.33 g

Mass percent of MgCO3 = 18.33%

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Answer:

the arrow

Explanation:

this show reaction give product which always appear on right side

1a. The volume (in cm³) of the block is 1042.734 cm³

1b. The volume (in L) of the block is 1.04 L

1c. The density (in g/mL) of the block is 0.907 g/mL

1d. The block will not sink

The volume of the block in cm³ can be obtained as follow:

Volume of block = dimension

Volume of block = 11.1 cm × 154 mm × 0.061 m

Volume of block = 11.1 cm × (154 / 10) cm × (0.061 × 100) m

Volume of block = 11.1 cm × 15.4 cm × 6.1 cm

Volume of block (in cm³) = 1042.734 cm³

The volume of the block in L can be obtained as follow:

1000 cm³ = 1 L

Therefore,

1042.734 cm³ = (1042.734 cm³ × 1 L) / 1000 cm³

1042.734 cm³ = 1.04 L

Thus, we can say that the volume of block (in L) is 1.04 L

We can obtain the density in g/mL as shown below:

Density = mass / volume

Density of block = 9.46×10² / 1042.734

Density of block = 0.907 g/mL

First, we shall determine the density of the liquid. Details below:

Density = mass / volume

Density of liquid = 724.11 / 780

Density of liquid = 0.928 g/mL

Now, we shall compare the density of the block and liquid to detect whether or not the block will sink. Details below:

Since the density of the block is smaller than that of the liquid, the block will not sink in the liquid.

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One important chemical reaction in our daily life is the process of cellular respiration, which occurs in living organisms to produce energy in the form of ATP.

The reaction involves the breakdown of glucose, a type of sugar, into carbon dioxide and water, and the release of energy in the process. The general equation for cellular respiration is,

\(C_{6} H_{12} O_{6}\) + \(6O_{2}\) → \(6CO_{2}\) + \(6H_{2}O\) + energy (ATP)

This reaction occurs continuously in our cells, providing the energy needed for various cellular activities and bodily functions. Without cellular respiration, we would not be able to survive.

Another important application of chemical reactions in daily life is in the production of food. Cooking food involves various chemical reactions, including the breakdown of complex carbohydrates and proteins into simpler molecules, the caramelization of sugars, and the Maillard reaction between amino acids and reducing sugars. These reactions help to create the flavor, aroma, and texture of the food we eat.

In addition, chemical reactions are also used in the production of many consumer products, such as cleaning agents, cosmetics, and pharmaceuticals. The chemical reactions involved in these products are carefully designed and controlled to ensure their effectiveness and safety for use.

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The concentration of chloride ions when 2.5 g of FeCl is dissolved in 150 mL of water is approximately 0.54 M.

To determine the concentration of chloride ions when 2.5 g of FeCl is dissolved in 150 mL of water, we need to consider the molar mass of FeCl and perform some calculations.

The molar mass of FeCl is 55.85 g/mol (for iron) + 35.45 g/mol (for chlorine), which gives a total molar mass of 91.3 g/mol for FeCl.

First, we need to calculate the number of moles of FeCl present in 2.5 g of the compound. This can be done using the formula:

moles = mass / molar mass

moles of FeCl = 2.5 g / 91.3 g/mol = 0.027 moles

Next, we convert the volume of water from milliliters (mL) to liters (L):

volume of water = 150 mL = 150/1000 L = 0.15 L

Now, we can calculate the concentration of chloride ions (Cl-) using the formula:

concentration (Cl-) = moles of Cl- / volume of water

Since FeCl dissociates into one Fe3+ ion and three Cl- ions, the number of moles of Cl- is three times the moles of FeCl:

moles of Cl- = 3 * moles of FeCl = 3 * 0.027 moles = 0.081 moles

concentration (Cl-) = 0.081 moles / 0.15 L = 0.54 M.

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Answer: hey i hope this image helps answer your question :)

Explanation:

:)

Answer:

Arthropod (3)

Annelids (2)

Cnidarians (1)

Echinoderms (4)

Explanations:

I hope all this helps if u don't understand it let me know.

Answer: 4

Explanation: because the zero doesn't count

Answer:

down below

Explanation:

The police's influence can happen based on a response to a problem. An example is when the police are called because of a thief child. If the police handles the situation correctly-using reasonable force, if necessary, and reading them their rights- the public will perceive the police in a good light or way. If the police use gross misconduct and do not go by the book, then they will be perceived as an enemy or in a bad light or way.

Answer: the uncertainty in the mass of the object is 0.007 g.

Explanation:

The uncertainty in the mass of the object can be calculated using the formula for absolute uncertainty:

Absolute uncertainty = Maximum measured value - Minimum measured value / 2

In this case, the maximum measured value is 2.758 g and the minimum measured value is 2.744 g.

Plugging these values into the formula, we get:

Absolute uncertainty = (2.758 g - 2.744 g) / 2

= 0.014 g / 2

= 0.007 g

So, the uncertainty in the mass of the object is 0.007 g.
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Answer:

it is directly proportional to the temperature of the gas

Explanation:

475 g is the correct response to the query. This is true because the combined mass of two solutions with masses of 450 g and 350 g equals 800 g. 125 g of solid crystals are created and fall to the bottom of the container as a result of a chemical reaction.

As a result, the mass of the residual solution is equal to 475 g, or 800 g less 125 g. It is significant to observe that the masses of the two solutions that were combined originally do not equal those of the solid crystals or the leftover solution.

This is because the two solutions' chemical reaction when combined results in a transition of the matter that is resulting in the production of a new substance.

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According to the provided orbital diagram, Hund's Rule looks to be the electron rule that is broken. According to Hund's rule, when degenerate orbitals with equal energy are accessible, electrons will first fill them individually before doing so in pairs.

While it should have been singly occupied in a distinct 2p orbital before partnering up, the second electron in the 2p orbital in the following diagram is paired with the first electron. Therefore, B. Hund's Rule is the appropriate response.

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The energy in joules of one mole of photons of visible light having a wavelength of 4.11×10^2 nm? can be expressed as 2.9*10^5 J

From the question we were told to find the energy and the parameters that is needed to calculate these are;

c=3*10^8

h= 6.626 * 10^-34 J.s

1 mol photons = 6.023x10^23 photon

λ = 4.11×10^2 nm  = 4.11 × 10-7 meters

The parameters can be input  as Energy of one mole photon (E) = ( 6.023x10^23 * 6.626 * 10^-34 * 3*10^8)/ (4.11 × 10^-7)

=291302

=2.9*10^5 J

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To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.

To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.

If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).

However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.

In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.

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Long-range order is best found in crystalline solids. Crystalline solids are characterized by a highly ordered arrangement of atoms or molecules in a repeating pattern called a crystal lattice. Option 2)

Long-range order is best found in crystalline solids. Crystalline solids are characterized by a highly ordered arrangement of atoms or molecules in a repeating pattern called a crystal lattice. The arrangement of the particles in a crystalline solid extends over long distances, resulting in a well-defined and repetitive structure.

In contrast, amorphous solids lack long-range order. They do not possess a well-defined crystal lattice or a regular arrangement of particles. The atoms or molecules in amorphous solids are arranged in a more random and disordered manner, leading to a lack of long-range order.

Thermal plasmas and nonthermal plasmas, on the other hand, are states of matter where the atoms or molecules are highly ionized, resulting in the formation of charged particles or ions. While plasmas can exhibit certain levels of order, they do not possess the same level of long-range order as crystalline solids.

Therefore, crystalline solids are the primary location where long-range order is typically found. Option 2)

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Note Complete Question

Which of the following best identifies where long-range order would be found?

1) in amorphous solids

2) in crystalline solids

3) in thermal plasmas

4) in nonthermal plasmas

OPTION B. Long-range order is most commonly found in crystalline solids, where atoms or molecules are arranged in a well-defined, consistent pattern. Amorphous solids and plasmas do not showcase this characteristic.

Long-range order pertains to the organization and regularity of constituents over large scale distances. It's a term often associated with the structure of crystalline solids. This is due to the fact that their atoms or molecules are arranged in a well-defined and repeated pattern extending in all three spatial dimensions over the length of the solid. On the contrary, an amorphous solid does not have a long-range order, instead, its structure is only ordered on a short range. Plasmas, both thermal or nonthermal, are an ionized gas and do not exhibit long-range order, primarily due to their high level of kinetic energy and lack of fixed positions for particles.

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