If 400. 0 calories raises the temperature of 100. 0 grams of ethyl alcohol from 20. 1 to 27. 0 degrees, what is the specific heat of liquid?.

Answer

A compound made of two ions.

Explanation

A binary compound is a compound formed from two different elements. There may or may not be more than one of each element.

For a binary ionic compound, a metal will always be the first element in the formula, while a nonmetal will always be the second.

Hence, a binary ionic compound is a compound made of two ions.

The main difference between a recipe for baking a cake and a chemical reaction is that baking a cake is a chemical change whereas a chemical reaction may be a chemical and physical change.

The similarities between a recipe for baking a cake and a chemical reaction is that the molecules react with each other and in both new substances are formed at the end.

When you bake a cake, the ingredients pass through a chemical change. A chemical change occurs when the molecules are rearranged to form a new substance. When you start baking, you have many ingredients. Baking a cake is a chemical change because the ingredients rearrange to form a new substance which is not reversed. The sugar, flour, and eggs can't be separated from each other. The properties of the materials have changed so it is considered as a chemical change.

So we can conclude that baking a cake and a chemical reaction is different due to the presence of chemical change whereas chemical reactions have both chemical and physical change. The similarity between a recipe for baking a cake and a chemical reaction is that in both new substances are formed at the end.

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At pH 1.0, methionine will exist in its protonated form with a positive charge on the amino group and a negative charge on the carboxyl group.

The structure of methionine at pH 1.0 can be drawn as follows:

H3N+CH2CH2SCH2CH(NH2)COO-

Note that the sulfur atom in methionine also has a lone pair of electrons, which can participate in hydrogen bonding or metal ion binding in proteins.
At pH 1.0, methionine, a neutral, nonpolar amino acid, would be in its fully protonated form. In this form, the amino group (NH3+) would carry a positive charge, and the carboxyl group (COOH) would remain as a neutral acid. The structure would look as follows:

H3N+ - CH - COOH
         |
         CH2
         |
     S - CH3

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Molecules are compounds that make covalent bonds between atom. In a covalent bond, the electrons from each atom invoved are shared between them, sticking the atoms together.

In ionic compounds, the electrons of each atoms are not shared, they are part of either of the ions. The ions sticke together because they are charged with opposite charges, so they attract each other.

So, ionic compounds are not considered individual molecules because they don't make covalent bonds, that is, their atoms don't shared electrons, they attract each other because of their opposite charges.

Answer:

As electrons are added to the valence shell, an extra proton (i.e fundamental, positively charged nuclear particle) is added to the element's nucleus. As electrons add and Z the atomic number increases 1 by 1, nuclear charge WINS, and electronic radii contract.

Explanation:

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Answer:

A microhabitat is a small or localized ecosystem in a larger ecosystem where a range of small populations of plants and animals sustain and main a micro-ecosystem.

Rotting or decomposing log is an example of the microhabitat as it provides food shelter, and various plants and organisms found and interact to make it an ecosystem. There are also interactions between biotic and abiotic factors. Many other characteristics present in this small ecosystem as given in the question.

A microhabitat is a small or localized ecosystem in a more extensive ecosystem a range of small populations of plants, animals sustain main a micro-ecosystem.

A rotting or decomposing log is an illustration of a microhabitat as it nourishes food shelter, and different plants and organisms found and interact to create an ecosystem. There are also interchanges between biotic and also abiotic factors. Multiple different characteristics are present in this small ecosystem as given in the question.

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The solubility of KCl at 90°C is 144 g/L.

To calculate the solubility of KCl at 90°C, we need to determine the amount of KCl that dissolves in 1 dm³ of water at that temperature. The solubility of a compound is typically expressed in terms of the mass of the compound that dissolves in a given volume of solvent.

Given:

Mass of KCl = 144 g

Volume of water = 1 dm³

Step 1: Convert volume to liters

1 dm³ = 1 L

Step 2: Calculate the solubility

Solubility = Mass of solute / Volume of solvent

Solubility = 144 g / 1 L = 144 g/L

It's worth noting that the solubility of KCl can vary with temperature. The given solubility value is specific to the conditions provided (90°C). If the temperature changes, the solubility of KCl may also change. Solubility is often reported as a function of temperature to reflect this relationship.

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1.78 grams of silver can be produced from 1.40 g silver nitrate and excess copper. The balanced chemical equation for the reaction of copper with silver nitrate (use cu2) is as follows: Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag

To determine how many grams of silver can be produced from 1.40 g of silver nitrate and excess copper, we first need to calculate the limiting reactant.

The stoichiometry of the reaction is such that 2 moles of silver nitrate react with 1 mole of copper to produce 2 moles of silver. The molar mass of silver nitrate is 169.87 g/mol while that of copper is 63.55 g/mol,

therefore, the number of moles of silver nitrate present in 1.40 g can be calculated as follows:Number of moles of silver nitrate = mass/molar mass= 1.40/169.87= 0.008240 molSimilarly, the number of moles of copper required to react with this quantity of silver nitrate is 0.004120 mol (half of the number of moles of silver nitrate).

Since there is an excess of copper, it will not limit the reaction and hence the limiting reactant is silver nitrate.To calculate the mass of silver produced, we use the molar mass of silver, which is 107.87 g/mol.Mass of silver produced = number of moles of silver x molar mass= 0.01648 x 107.87= 1.78 g

Therefore, 1.78 grams of silver can be produced from 1.40 g silver nitrate and excess copper.

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Answer:

Explanation:

q=mcat

q= 50g(4.184)(100-100)

q = 0

The pressure exerted by the water vapor molecules in the air is called the vapor pressure.

The Vapor pressure is the measure of the tendency of the material to change in to the gaseous state or the vapor state, and it will increases with the temperature. The temperature at which the vapor pressure of the surface of the liquid will becomes equal to the pressure that is exerted by the surroundings is called as the boiling point of the liquid.

The pressure exerted by the vapor in the thermodynamic equilibrium with the its condensed phases at the given temperature in the  closed system is termed as the vapor pressure.

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The main role of the liver is to produce bile, which helps the process of digestion.

The liver is the second-largest organ in the human body.

It's a vital organ located in the upper right side of the belly, underneath the rib cage.

The liver performs a variety of functions, including detoxifying harmful substances, creating blood clotting proteins, and producing bile to aid in digestion.

The liver aids in digestion by producing bile. Bile is a yellow-green fluid produced by the liver that aids in digestion.

It aids in the breakdown of fats into tiny droplets, making it simpler for enzymes in the small intestine to break them down.

Bile also aids in the absorption of fat-soluble vitamins and minerals by the body.

Liver cells also create glucose, which is stored as glycogen.

When glucose levels in the body are low, the liver can break down stored glycogen to produce glucose and release it into the bloodstream.

This helps maintain healthy blood sugar levels, ensuring that cells throughout the body receive the energy they need.

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Answer:

facta you from the same thing as you from the samel

Answer:

The first one

The process of dissolving frees the electrons in the solution to move.

Explanation:

The new temperature when the average molecular velocity of the gas is 1000 m/s is 1200 K.

To find the new temperature given the change in average molecular velocity, we can use the relationship between molecular velocity and temperature.


Identify the initial temperature (T1) and molecular velocity (v1)
T1 = 300 K
v1 = 500 m/s

Identify the final molecular velocity (v2)
v2 = 1000 m/s

Use the proportionality relationship between molecular velocity and the square root of temperature: v1/v2 = √(T1/T2)

Plug in the values and solve for the final temperature (T2)
(500 m/s) / (1000 m/s) = √300 K / T2)

Square both sides of the equation
(1/2)² = (300 K) / T2

Solve for T2
T2 = (300 K) / (1/4) = 1200 K

The new temperature when the average molecular velocity of the gas is 1000 m/s is 1200 K.

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Explanation:

In a solid particles are firmly together and are stuck in a regular pattern

in a liquid particles still touch but arent in a fixed pattern

in a gas particles move quickly in all directions

When an ion has the same number of electrons as a noble gas, it is said to have achieved a stable electron configuration. For example, the sodium ion (Na+) has 10 electrons, which is the same as the noble gas neon (Ne). The chloride ion (Cl-) has 18 electrons, which is the same as the noble gas argon (Ar). Finally, the xenon ion (Xe+) has 36 electrons, which is the same as the noble gas krypton (Kr).

In summary, the ions that match with the noble gases that have the same number of electrons are:
- Na+ matches with Ne
- Cl- matches with Ar
- Xe+ matches with Kr
These noble gases are also known as "closed shell" elements, because they have achieved a stable electron configuration.

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The gas sample will expand to approximately 5.54 liters when heated from 50.0°C to 500.0°C.

To determine the final volume of a gas sample when it is heated from 50.0°C and 2.33 L to 500.0°C, we can use Charles's Law, which states that the volume of a gas is directly proportional to its temperature, provided that the pressure and the amount of gas remain constant.

The formula for Charles's Law is:

V1/T1 = V2/T2

where V1 and T1 are the initial volume and temperature, and V2 and T2 are the final volume and temperature. First, convert the temperatures from Celsius to Kelvin by adding 273.15 to each:

T1 = 50.0°C + 273.15 = 323.15 K
T2 = 500.0°C + 273.15 = 773.15 K

Now, plug the values into the formula and solve for V2:

(2.33 L) / (323.15 K) = V2 / (773.15 K)

V2 = (2.33 L) * (773.15 K) / (323.15 K)
V2 ≈ 5.54 L

So, the gas sample will expand to approximately 5.54 liters when heated from 50.0°C to 500.0°C.

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The type of interaction that stabilizes the alpha (α) helix and the beta (β) pleated sheet structures of proteins is called hydrogen bonding.

Hydrogen holding is an extraordinary sort of dipole fascination between particles, not a covalent cling to a hydrogen iota. It results from the appealing power between a hydrogen particle covalently clung to an extremely electronegative molecule like a N, O, or F iota and another exceptionally electronegative iota.

Hydrogen bonds can occur in any molecule that has a hydrogen atom directly attached to an oxygen or nitrogen. When hydrogen is bonded to fluorine, hydrogen bonds also occur, but other molecules lack the HF group.

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A student is given a sample of an unknown substance. He is asked to determine if it is classified as a metal, a metalloid, or a nonmetal. He discovered that the unknown element forms amphoteric oxides and often behave as semiconductors. This element is most likely a metalloid.

Amphoteric oxides are compounds that can exhibit both acidic and basic properties. They can react with both acids and bases, indicating that the unknown element can form oxides with both acidic and basic characteristics. This property is commonly observed in metalloids, which are elements that exhibit properties of both metals and nonmetals.

Additionally, the statement that the unknown element often behaves as a semiconductor further supports the classification as a metalloid. Metalloids are known for their intermediate conductivity between that of metals and nonmetals. They can conduct electricity under certain conditions, making them semiconductors.

Metalloids are located along the staircase on the periodic table, separating the metals from the nonmetals. Examples of metalloids include elements such as silicon (Si), germanium (Ge), and arsenic (As).

Therefore, based on the given characteristics of forming amphoteric oxides and behaving as semiconductors, the unknown substance is most likely a metalloid.

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Based on the available resources and profit per unit, producing 266 units of Product 1 would result in the highest total profit of BD 585.20.

To determine the maximum number of units of each product that can be produced given the available resources, we need to compare the resource requirements of the products with the available resources.

Let's calculate the resource requirements for each product:

Product 1:

- Metal sheet: 0.250 m2 per unit

- Glass sheet: 0.120 m2 per unit

- Electrical components: 3 units per unit

Product 2:

- Metal sheet: 0.150 m2 per unit

- Glass sheet: 0.050 m2 per unit

- Electrical components: 2 units per unit

Now let's compare the resource requirements with the available resources:

Metal sheets:

- Product 1 requires 0.250 m2 per unit, so the maximum number of units that can be produced using available metal sheets is 90 m2 / 0.250 m2 = 360 units.

- Product 2 requires 0.150 m2 per unit, so the maximum number of units that can be produced using available metal sheets is 90 m2 / 0.150 m2 = 600 units.

Glass sheets:

- Product 1 requires 0.120 m2 per unit, so the maximum number of units that can be produced using available glass sheets is 30 m2 / 0.120 m2 = 250 units.

- Product 2 requires 0.050 m2 per unit, so the maximum number of units that can be produced using available glass sheets is 30 m2 / 0.050 m2 = 600 units.

Electrical components:

- Product 1 requires 3 units per unit, so the maximum number of units that can be produced using available electrical components is 800 units / 3 units = 266 units.

- Product 2 requires 2 units per unit, so the maximum number of units that can be produced using available electrical components is 800 units / 2 units = 400 units.

Now let's determine the maximum number of units that can be produced for each product based on the limiting resource:

Metal sheets: The maximum number of units that can be produced is 360 units (for Product 1) since it requires a larger area of metal sheets.

Glass sheets: The maximum number of units that can be produced is 250 units (for Product 1) since it requires a larger area of glass sheets.

Electrical components: The maximum number of units that can be produced is 266 units (for Product 1) since it requires a larger number of electrical components.

Since the limiting resource for all three resources is reached with Product 1, the maximum number of units that can be produced for Product 1 is 266 units. As for Product 2, it can be produced up to a maximum of 250 units.

Now let's calculate the profit for each product:

Profit per unit for Product 1: BD 2.200

Profit per unit for Product 2: BD 1.400

Total profit for Product 1: 266 units × BD 2.200 = BD 585.20

Total profit for Product 2: 250 units × BD 1.400 = BD 350.00

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Answer:

Africa

Explanation:

Ang Africa ay ang kontinente na mayroong pinakamataas na bilang ng mga bansa sa lahat ng mga kontinente.

Kasalukuyan, ang bilang ng mga bansa sa kontinente ay 54, ito ay 53 bago ang South Sudan ang pinakabagong sumali.

Ang bilang na ito ay pinaniniwalaang tataas sa mga darating na taon dahil sa kaguluhan ng iba't ibang mga segment sa ilang mga bansa para sa kalayaan

The P- tube only contains the competent in the bacteria cells while the P+ tube contains both the competent the bacterial cells together with recombinant plasmid.

The Bacteria cell in the P+ tube were given the plasmid and the bacteria cell in the P- tube were not given the plasmid. The genetically were engineered the circular DNA introduced in to the P+ tube.

The P- tube will contains the competent in the bacteria cells and the P+ tube contains both the competent the bacterial cells together with recombinant plasmid. The Plasmids can be swapped in between the bacteria in the process called the conjugation.

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Answer:

17000 joules.

Explanation:

Explanation:

With knowledge of the specific heat capacity of a substance, its mass, and the temperature change, we can convert this to the energy required for this temperature change using:

ΔH=mCΔT, where

ΔH=change in enthalpy (J)

m= mass of substance being heated (g) i.e. water in this question

C= specific heat capacity (J/g°C)

ΔT= change in temperature (°C)

We know mass=65g and ΔT=76°C−12°C=64°C

The specific heat capacity of water is 4.18J/g°C

Therefore, ΔH=65g⋅4.18Jg°C⋅64°C

=17388.8J

=17000J (2 significant figures)

Answer:

The rule is especially applicable to carbon, nitrogen, oxygen, and the halogens, but also to metals such as sodium or magnesium. ... All four of these electrons are counted in both the carbon octet and the oxygen octet, so that both atoms are considered to obey the octet rule.

The molecular formula for C5Hx in this question is C5H12

In this case, molecular formula can be determined by calculated the molecular weight relative for each molecule. The molecular weight relative for each molecule calculated by using ideal gas equation:

PV=mRT/Mr

with,

P = Pressure of the system

V = Volume occupied by gas

m = mass of C5Hx

R = ideal gas constant

T = Temperature of the system

Mr = molecular weight of C5Hx

2 x 0.32 = 1.44 x 0.08 x 400 /Mr

Mr = 1.44 x 0.08 x 400/ (2 x 0.32)

Mr = 72

Mr of C5Hx = 6 x 12 + 1 x X

72 = 60 + X

X = 12

C5Hx = C5H12

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Answer:

a) Density

Explanation:

Answer:

I actually have no idea

Explanation:

Sorry my man

Answer:

Explanation:

generator

A) high melting point

C) soluble in water

D) soluble in alcohol

E) does not conduct electricity in water

these options are a bit vague as some covalent substances dissolve in water / alcohol while some don't