What are the conditions that are required for electrical energy to be present in an electrical circuit?

At normal temperature and pressure, hydrogen chloride (HCl), a gas composed of the element's hydrogen and chlorine, is a gas.

An aqueous solution of hydrogen chloride is what is known as hydrochloric acid, commonly referred to as muriatic acid. It has an unmistakably strong odor and is colorless. It is categorized as a powerful acid. In the digestive tracts of the majority of animal species, including humans, it is a part of the stomach acid. In the food, textile, metal, and rubber sectors, hydrogen chloride (HCl) is frequently employed as a bleaching agent to neutralize alkaline substances. When discharged into the soil, it is neutralized, and when it comes into contact with water, it hydrolyzes quickly.

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30(5) + 50(65) = 3400
30 + 50 = 80
3400/80 = 42.5

42.5 C

This is intuitively what it should be in my mind, I don't know any other way to solve it.

Answer:

So if you divide the kg of butter and the cake that will be your answer and then you should have a fraction so the fraction would be 0.25 over 2 because you simplified it. 0.25/2

Explanation:

Answer:

Option C. 52.057

Explanation:

The following data were obtained from the question:

Isotope >> Mass number > Percentage

A (Cr-50) > 50 >>>>>>>>>> 4.3

B (Cr-52) > 52 >>>>>>>>>> 83.8

C (Cr-53) > 53 >>>>>>>>>> 9.5

D (Cr-54) > 54 >>>>>>>>>> 2.4

Average atomic mass =?

The average atomic mass of chromium, Cr can be obtained as follow:

Average atomic mass = [(Mass of A × A%) /100] + [(Mass of B × B%) /100] + [(Mass of C × C%) /100] + [(Mass of D × D%) /100]

Atomic mass of Cr = [50×4.3)/100] + [52×83.8)/100] + [53×9.5)/100] + [54×2.4)/100]

= 2.15 + 43.576 + 5.035 + 1.296

Atomic mass of Cr = 52.057

Therefore, the atomic mass of chromium, Cr is 52.057

According to the complementary base pairing in DNA, the  nitrogen base sequence  which is the partner of T-C-A-G-C-A is  A-G-T-C-G-T.

DNA  is a hereditary material which is present in human beings as well as all other living organisms.  Every cell which is present in an organism's body has DNA  which is the same. Most of the DNA is situated in the cell's nucleus  and small amount of it can be found in the cell's mitochondria as well.

Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.

DNA bases are capable of pairing up with each other. Adenine pairs with thymine and guanine pairs up with cytosine .Each base is also attached to a sugar molecule  and a phosphate group. A base, phosphate  sugar are together called as nucleotides.

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Compounds have fixed composition, properties and are chemically bonded while mixtures have variable composition, properties and are physically mixed.

Mixtures and combinations are two distinct sorts of substances. Compounds are unadulterated substances made out of at least two components synthetically reinforced together in a decent proportion, while blends are blends of at least two substances that are truly blended yet not artificially consolidated. Three manners by which mixtures and combinations vary are:

Piece: Mixtures have a proper creation and a particular proportion of molecules or particles, while blends have a variable synthesis with no particular proportion.

Properties: Mixtures have unmistakable properties, like a particular dissolving point, edge of boiling over, and compound reactivity, while blends have a scope of properties that rely upon the substances in the combination.

Detachment: Mixtures must be isolated by substance implies, like through a compound response, while blends can be isolated by actual means, like filtration, refining, or chromatography.

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Answer:

B.

Explanation:

Thus we can see that the mass of protons and mass of neutrons are approximately equal.

It is accurate to state the following. Temperature is unaffected by a phase change. As a result, choice c) is accurate.

Phase transition is the process by which a substance transforms from one state—solid, liquid, or gas—to another. Every substance and substance has a precise range of temperatures and pressures at which it can change by one phase to another.

Energy changes are physical processes that cause a material to change its phase. The transformation frequently occurs at a particular temperature, usually known as the drug's melting or boiling point, as heat is used or removed.

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The Complete Question :

During a phase change, the temperature of a substance

a. increases

b. decreases

c. does not change

d. increases or decreases

The correct statement is: temperature is unaffected by a phase change.

As a result, during a phase change temperature does not change, this option is correct.

Phase transition is the process by which a substance transforms from one state—solid, liquid, or gas—to another. Every substance and substance has a precise range of temperatures and pressures at which it can change by one phase to another.

Energy changes are physical processes that cause a material to change its phase. The transformation frequently occurs at a particular temperature, usually known as the drug's melting or boiling point, as heat is used or removed.

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If a solute dissolves in water to form a solution that does not conduct an electric current, the solute is a non-electrolyte.

Non-electrolytes are compounds that do not ionize in solution, meaning they do not separate into charged particles that can carry an electric current. Examples of non-electrolytes include sugar, urea, and ethanol. In contrast, electrolytes are compounds that dissociate into ions when dissolved in water, making them capable of conducting electricity. Examples of electrolytes include sodium chloride, potassium hydroxide, and sulfuric acid. The ability to conduct electricity is a fundamental property that distinguishes between electrolytes and non-electrolytes. This occurs because non-electrolytes do not dissociate into ions when dissolved in water. Instead, they remain as intact molecules, and these molecules are unable to carry an electric charge. Common examples of non-electrolytes include sugar, ethanol, and urea. In contrast, electrolytes, like salts and acids, do dissociate into ions in solution and can conduct electricity.

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Answer: It would be malleable, solids, luster, conductors, reactive

Explanation:

Answer:

0.01134kg

Explanation:

You divide by 1000 to get the kg

The mass of one mole of pennies is 1.326 × 1024 grams.

To determine the mass of one mole of pennies, we need to find the number of pennies in one mole and then multiply that by the mass of one penny. A mole of a substance is defined as the number of atoms, molecules or ions present in the substance and is equal to Avogadro's number, which is 6.022 × 1023.

Since one penny weighs about 2.2 grams, we can calculate the mass of one mole of pennies as follows:1 mole of pennies = 6.022 × 1023 pennies The mass of one mole of pennies = Number of pennies in one mole × Mass of one penny= 6.022 × 1023 × 2.2 grams= 1.326 × 1024 grams Therefore, the mass of one mole of pennies is 1.326 × 1024 grams.

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The pH of H2SO4 is 1.20×10–2.

We need to determine the pH of a 0.310 M solution of H2SO4.In order to find pH, we'll need to find the [H+] of the solution.

At equilibrium, the concentration of H+ will be twice that of the initial concentration of H2SO4.

Thus, [H+] = 2 × 0.310 = 0.620 M

The concentration of [SO42-] will also be 0.310 M.

Using the Ka2 expression for H2SO4 gives:

Ka2 = ([H+][SO42-])/[H2SO4]1.20 × 10-2 = (0.620 x 0.310)/[H2SO4][H2SO4] = 0.12 M

The [H+] in the solution is 2 × 0.310 = 0.620 M,

so:

pH = -log([H+]) = -log(0.620) = 0.2064 (rounded to four significant figures)pH = 0.21 (rounded to two significant figures)

Therefore, the pH of a 0.310 M solution of H2SO4 is 0.21.

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Definition: Fluid that can act as a liquid or as a solid depending on the pressure applied on it.

Explanation:

A fluid that incorporates time in a solid and liquid model is a non-Newtonian fluid. This type of fluid can behave as a solid or as a liquid depending on the pressure that is applied on it. This is different from normal fluids that remain the same regardless of the pressure they are subjected to. In the case of non-Newtonian fluids, when submitted to pressure, they are presented as solids, but without pressure, they are presented as liquids. This feature can be seen even within the same system.

The empitical formula shows the simplest ratio of elements in a compound (not the total number of atoms in the molecule).

So to find the empirical formula we need to calculate how many moles of each atom we have in this sample. Then we will see the ratio of each element.

We are given the mass, so to convert it to moles we use the molar mass. For this we go to the periodic table and see that the values for each element are:

Na (sodium): 22,99 g/mol

H (hydrogen): 1 g/mol

P (phosphorus): 25,81 g/mol

So we calculate the moles of each element as follows:

And as we see, for every 0.833 moles of Na we have the same number of moles of P, so the ratio of these elements in the molecule is 1 to 1.

As for the hydrogen:

So the ratio Na to H is 1 to 2.

Now we can write the empirical formula as follows=

Answer:

salt dissolving

Explanation:

Hope this helps!

Answer:

H2Br + 2KOH ----- K2Br + 2H2O

The \(4.61*10^{26\) Ar atoms organ atoms are contained in 7.66×10³ of an organ.

7.66*10^5m mole = 766 moles

1 mole of Ar atom contains 6.022*10^23 Ar atoms.

766 mole of Ar atom contains 6.022*10^23*766 Ar atoms

= 4612.85*10^23 Ar atom

= 4.61*10^26 Ar atoms

Atoms are the fundamental building blocks of matter. They are the smallest units of an element that retain the chemical properties of that element. Atoms are composed of a nucleus, which contains positively charged protons and neutral neutrons, and negatively charged electrons that orbit around the nucleus in shells or energy levels.

The number of protons in an atom's nucleus determines its atomic number and thus its identity as a particular element. Atoms can form chemical bonds with other atoms through sharing, gaining, or losing electrons, leading to the creation of molecules and compounds.

Atoms exist in a wide variety of forms, each with its own unique properties and characteristics. The study of atoms and their behavior is known as atomic physics, and it has important applications in fields such as chemistry, materials science, and engineering.

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Answer:

413,000 grams

Explanation:

Answer:

413,000

Explanation: That's because 1 kg equals to 1,000 grams.

Answer:

C

Explanation:

Answer:

The rock in a bucket of water analogy is used to describe how air masses interact. When a warm air mass is placed over a cold air mass, it is like a rock being placed in a bucket of water. The warm air mass will initially rise, creating an area of low pressure. The cold air mass will then rush in to fill the area of low pressure, creating a storm. This type of weather causes thunderstorms, heavy rains, and high winds.

Answer: The correct option is b) 600

Explanation:

Molecules are formed when two atoms of same or different elements combine together.

Atoms are the smallest unit of matter that combines to form a compound.

For the given chemical compound, \(CH_3CO_2H\)

Given number of molecules = 300 molecules

In 1 mole of the given chemical compound, there are 2 atoms of carbon, 4 atoms of hydrogen and 2 atoms of oxygen

Number of atoms of oxygen = \(2\times \text{Number of molecules of compound}\)

Number of atoms of oxygen = \(2\times 300=600atoms\)

Hence, the correct option is b) 600

Answer: 600

Explanation:

Answer:

The answer is D Bill Bass

Explanation:

Remember it from the lesson and I took the test.

Answer:

The volume of stock solution needed to make the solution is 1875 ml

Explanation:

The parameters given are;

The volume of 75 M solution of H₂SO₄ = 400 ml

The concentration of stock solution = 16.0 M

Number moles per liter of stock solution = 16 moles

Number of moles in required 400 ml solution = 0.4×75 = 30 M

Volume of stock solution that contains 30 M = 30/16×1 = 1.875 l

The volume of stock solution that is required = 1875 ml

In the presence of water, ionic and hydrogen bonds can be disrupted.

Water is a polar molecule, meaning it has a partial positive charge on one end and a partial negative charge on the other end.

This polarity allows water to interact with other polar molecules, including ionic compounds and molecules containing hydrogen bonds.

Ionic compounds are held together by strong electrostatic forces between positively and negatively charged ions.

In the presence of water, the partial charges on the water molecule can attract and surround the ions, weakening the electrostatic forces and causing the ionic compound to dissociate into its component ions.This is why ionic compounds dissolve readily in water.

Hydrogen bonds are a type of intermolecular force that forms between a hydrogen atom bonded to an electronegative atom and another electronegative atom in a different molecule.

Water molecules can form hydrogen bonds with other polar molecules, and in the presence of water, these hydrogen bonds can be disrupted as water molecules compete for hydrogen bonding partners. This can affect the solubility and reactivity of molecules containing hydrogen bonds.

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