When silver nitrate (AgNO3) dissolves in water, the temperature of the solution decreases.
Explain your answer

bleach) containing 50 to 100 micrograms (ppm) of chlorine. The most common sanitizers on the market contain chlorine. the quaternary ammonium (QUAT, QAC) Maintaining concentration: as instructed by the manufacturer. Iodine. Concentration ranges from 12.5 to 25 ppm.

The three main chemical substances that are used as sanitizers in the food service industry are iodine sanitizers, chlorine-based cleansers, and cleaners. The most used molecular sanitizing agent is chlorine since it is both very effective and inexpensive.

It may successfully eradicate a variety of pathogens, including bacteria, hepatitis, and fungi, due to its effectiveness as a germicide. Rubing alcohol can be used as a household cleaner, but it is widely employed in medical settings to clean hands.

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The energy released by the brass is an example of the heat of fusion.

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Answer:

-283 C

Explanation:

I got it right

9.  The slope for the given equation 3- y ≤ -5x is 5 and intercept is 3.

Slope-intercept form (y=mx+b) of linear equations highlights the slope (m) and y-intercept (b) of line. The slope intercept formula y = mx + b is used when you know the slope of line that is to to be examined and point given is also the y intercept (0, b). In this formula, b represents y value of the y intercept point.

The slope intercept for of linear equation is: y = mx +b

m is slope and b is y intercept.

So, y = 5x + 3

Now m = 5 ; so the slope is 5

b = 3 ; hence y-intercept is 3

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In humans, simple columnar epithelium is the type of epithelium that found along most of the digestive tract including the stomach, and intestines.

Simple columnar epithelium is made up of a single layer of tall, slender columnar epithelial cells with oval-shaped nuclei that are linked to the basement membrane in the basal region. The majority of the digestive tract's organs in humans, including the stomach and intestines, are lined by simple columnar epithelium. The uterus is lined with simple columnar epithelium as well.

There are two further classifications for simple columnar epithelium: ciliated and non-ciliated (glandular). Tiny hairs on the ciliated portion of the simple columnar epithelium assist in moving mucus and other materials along the respiratory system.

The majority of the human digestive tract, including the stomach and intestines, is lined by simple columnar epithelium.

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1,640.  The number is rounded up because the digit in the tenths place is 8, which is greater than or equal to 5.

Rounding off is a mathematical process of replacing a number with an approximate value that has a shorter, simpler, or more explicit representation. It is often done to reduce the number of significant figures in a calculation or to make calculations easier. Rounding off is used in many everyday situations, such as calculating a restaurant bill or estimating the amount of paint needed to paint a room. It is also used in more complex calculations, such as in scientific and engineering calculations.

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Answer:

3.24108 Raised to 23 I'm pretty sure

Atoms constitute single neutral particles, and there are 3.91 x 1022 molecules in 2.86 g of CO2. By bonding together two or more atoms, molecules are neutral particles.

The smallest component of a material, a molecule is made up of two or more atoms that are joined by chemical bonds and preserve the structure and characteristics of the larger substance. Chemistry is built on molecule-level principles. A subscript indicating the number of atoms is used after the element symbol to identify molecules.

An atom is the tiniest component of an element and shares all of its chemical characteristics with the element as a whole. Dalton's Atomic Theory was the first valid theory describing the makeup of stuff. 1. Atoms were indivisible and unbreakable, and they make up all matter.

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All species of life are metazoans. Eukaryotes with several cells and mitochondria are called metazoan animals.

All multicellular organisms with differentiated body parts, including tissues and organs, belong to the Metazoa group. They have specialized cells lining the cavity of their digestive system. They have nucleated cells with cell membranes.

The majority of metazoans have bilateral symmetry. They display the division of labor. The body organization of lower invertebrates is at the tissue or organ level, whereas the body organization of larger invertebrates and vertebrates is at the organ-system level. Unlike protozoans, which have a cell wall, animals don't.

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Decomposition - 5

Combustion - 3

Synthesis - 4

Double replacement - 1

Single replacement - 2

Decomposition reaction is the breaking down of one reactant into multiple substances/fragments/parts due to external sources of energy.

Combustion is the burning of any material and we know that burning is a reaction with oxygen.

Synthesis is the formation of one compound from multiple reactants i.e. one product.

A double replacement or double displacement reaction takes place like this: AB + CD --> AC + BD

In single displacement reactions, one element is substituted for another element in the final compound, i.e. A + CD --> AC + D

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Covalent bonds are created between two nonmetals, whereas ionic bonds are formed between a metal and a nonmetal.

Covalent bonds between atoms develop when there is little to no difference in the electronegativity of the atoms, whereas ionic bonds form when there is a large difference.

Covalent bonds are created when the half-filled atomic orbitals of two different atoms overlap, but ionic bonds cannot be created by overlapping orbitals.

For example, the ionic bond in NaCl is written as Na⁺Cl⁻ because sodium is a metal and chlorine is a non-metal.

Let's use methane as an example. Due to the low difference in electronegativity between carbon and hydrogen, the atomic orbitals of these two elements meet in this molecule and form a covalent bond.

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The structure of periodic acid [tex]HiO_{4}[/tex] attached at end of the solution.

The formal charge of [tex]HiO_{4}[/tex] is zero.

Lewis structures illustrate the bonds forming between the various atoms in covalent compounds. These further demonstrate the molecule's lone pairs. Lewis dot diagrams, electron dot diagrams, Lewis dot structures, and Lewis dot formula are other names for them. These structures can predict the shape, polarity, and reactivity of covalent compounds.

First, determine the total number of valence electrons. The H atom (group 1) has one valence electron, the I atom (group 17) has seven, and the O atoms have six valence electrons (group 16).

Take two electrons away from each bond in the skeletal framework. In this form, the 5 bonds each receive 10 of the 32 valence electrons.

The other O atom receives the final two valence electrons, completing the octets for the terminal O atoms. Because the iodine atom does not yet have a complete octet.

The diagram is attached at the end of the solution.

Formal charge = v - l - [tex]\frac{b}{2}[/tex]

v = valence electron on a free atom

l = lone pair electrons in bonding atoms

b = bond pairs of electrons

Therefore formal charge on I = +3, 3O = -1

Thus formal charge of [tex]HiO_{4}[/tex] = zero.

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The reaction Al + NaCl → AlCl₃ + Na among the given reactions will not occur according to the reactivity series. Therefore, option B is correct.

The reactivity series of metals can be described as the arrangement of metals in the decreasing order of their reactivities.

The metals at the top of the activity series are strong reducing agents as they can easily oxidize. These metals easily corrode. The reducing ability gets weaker moving down the series.

The electropositive elements reduce as move down the activity series of metals. All metals above hydrogen in the reactivity series emit hydrogen gas upon reacting with dilute HCl.

Aluminum metal lies down to the sodium metal so it can not displace sodium metal therefore, this reaction is not possible.

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Answer:

Ok so, 0.0269 moles of CaO are reacted, how much of CaOH2 will produce.

Explanation:

How many grams are in a mole of Ca OH 2?

74.093 grams

so you need to multiply 0.0269 * 74.093 = 1.9931017

so 1.9931017 CaOH2 will be produced

Product prediction and solubility rules in the following chemical reactions

MgBr2 (aq) + Cl2 (g) → MgCl2 (aq) + Br2 (aq)

Reaction type: Substitution

2 Al (s) + Fe2O3 (s) → Al2O3 (s) + 2 Fe (s)

Reaction type: Redox

ZnCl2 + 2 AgNO3 → Zn(NO3)2 + 2 AgCl

Reaction type: Double substitution

H2SO4 (aq) + 2 NaOH (aq) → Na2SO4 (aq) + 2 H2O (l)

Reaction type: Neutralization

4 Al (s) + 3 O2 (g) → 2 Al2O3 (s)

Reaction type: Oxidation

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3.20 x 1024 H atoms, which were produced after the Big Big 13.7 billion years ago, are contained in 0.532 mol of C4H10, the smallest known unit of mass.

Atomic structure: composition The atom is made up of a small nucleus that is encircled by circling electrons. Protons, which are found in the nucleus and have positive charges comparable to the atom negative charges, are present. Neutrons, which are almost the same size but lack a charge, might also be found in the nucleus.

Protons, electrons, and neutrons are the 3 main types of particles found in atoms. In contrast, the mass of the electron is extremely little compared to that of neutrons and protons. A neutron has had no charge, a proton has a positive charge, and an electron has a negative charge.

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Climate is the average weather of the area over a long term period. weather is short-term changes in the atmosphere

Answer: Weather refers to a short-term change in the atmosphere or temperature, while climate is over a long period of time.

Is large, the equilibrium mixture is mostly products. If Kc is small, the equilibrium mixture is mostly reactants. When Kc is approximately 1, the equilibrium mixture contains appreciable amounts of both reactants and products.

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1.343 x 10²³ grams of potassium hydroxide (KOH), exist in 12.50 X 1019 molecules of KOH.

The quantity of units in one mole of any substance is called the Avogadro number, also referred to as the Avogadro constant. The comparable number is 6.0221408571023. The units may be electrons, ions, atoms, or molecules, depending on the type of reaction occurring and the substance being utilized. Two gases of the same volume have the same number of molecules when they are at the same temperature and pressure, according to Amedeo Avogadro.

Given:

0.2228 mol of potassium hydroxide in 12.50 X 1019 molecules of KOH

Hence in one mole, there is Avogadro number of molecules

i.e. 6.023 × 10²³ molecules.

no of atoms = 0.223 x 6.023

= 1.343 x 10²³

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Option (a) is correct. The alkali metals contains the most reactive elements. It is present in the group 1 of the periodic table.

In the periodic table, Group 1 includes hydrogen and the alkali metals. Because they have just one valence electron, group 1 elements are very reactive. The atoms of Alkali metals can easily give away the one outer-level electron. This is due their larger atomic radii and low ionization energies. These metals are most reactive. Alkali metal tend to donate their electrons in reactions and have an oxidation state of +1. These alkali metals are characterized by their soft texture and silvery color. They have low boiling point and melting points. These are less dense. Lithium, sodium and potassium float on water because of their low density. This explains the alkali metals.

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Answer:

295 g of ammonia = (17.32 mol x 6.022 x 10^23 molecules/mol) = 1.04 x 10^25 molecules.

Explanation:

hope this helps

According to the concept of thermal energy, the statement which best explains the temperature difference is that warm air rises by convection to the upstairs​.

Thermal energy is defined as a type of energy which is contained within a system which is responsible for temperature rise.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.

Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance whose molecules or atoms are vibrating faster.

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Answer:

Mass of nitrogen = 25.222g

Explanation:

We know that the mass of the unknown composition is 58.0g, so the total mass must add up to 58.0g, so let's make the unknown mass of nitrogen = x

24.3g + 3.072g + 5.406g + x = 58.0g

32.778g + x = 58.0g

x = 58.0g - 32.778g = 25.222g

In the same way, as the U.S. customary system employs feet, quarts, and ounces to measure these things, the metric system measures length, liquid volume, and mass in units like meter, liter, and gram.

The metric system uses kilograms or grams to measure mass, meters or kilometers to measure distance, and liters to measure volume. Time doesn't have any quantifiable physical qualities. The length of time between two events is what we are actually counting. People have used a variety of methods throughout history to keep track of the passage of time, including sunrise and sunset times and moon phases. Volume, which is measured in cubic units, is the area in three dimensions that matter occupies or that is encircled by a surface. The cubic meter (m3), a derivation of the SI unit of volume.

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A mole is described as the amount of substance that has as many particles as there are atoms in exactly 12 grams of carbon 12 isotope.

A mole refers to the amount of substance that has as many particles as there are atoms in exactly 12 grams of carbon 12 isotope. A mole shows 6.022×1023 particles irrespective of their nature.  The symbol of a mole is 'mol'. And one mole is equal to 6.022×1023.

A mole is a standard scientific unit that measures large quantities of very small entities such as molecules, atoms, or other specified particles.

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One of the chiral ketones which has the formula of C₆H₁₂O is Methyl isobutyl ketone

MIBK is used as a solvent in factories that manufacture paints, rubber products, chemicals, and machinery. As a solvent, it is used in pesticide spraying. Pharmaceutical companies that manufacture prescription drugs also use his MIBK. MIBK enhances and retains flavor and aroma.

Unlike acetone and butanone, MIBK has fairly low solubility in water. It has similar polarity to ethyl acetate but is more acid/base stable. This and its low density make it suitable for liquid-liquid extraction. These are the uses and applications of one of the chiral ketones.

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Answer:

below on my bule

Explanation:bule

Answer: Don't know if this is right but try 102 g.

Explanation: I put this into acellus and it was correct so see if that works.

t-Butyl alcohol (t-BuOH) is a tertiary aliphatic alcohol used as a solvent or alcohol denaturant and as a fragrance carrier in cosmetics. t-butyl alcohol is one of the chiral forms of alcohol.

t-BuOH was reported as an ingredient in 32 eye makeup, fragrance, and shaving formulations at concentrations between 0.00001% and 0.3%. Common modifiers found in cosmetics and personal care products include:

Denatonium benzoate, t-butyl alcohol, diethyl phthalate, methyl alcohol. The alcohol denaturation process does not chemically change the ethanol molecule. Acute exposure:

Acute exposure to tert-butyl alcohol can cause eye irritation and redness, runny nose, sore throat, headache, nausea, fatigue, dizziness, and red and dry skin. The formula of this chiral alcohol is C4H10O.

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The pressure of a mixture of nitrogen, carbon dioxide, and oxygen gases (PO₂ = 254 mm Hg, PN₂ = 0.351 atm, and PCO₂ = 43.9 kPa) is 113.3 kPa

The total pressure exerted by a gas mixture is the sum of the partial pressures of the component gases. For example, Earth's atmosphere is a mixture of gases consisting of nitrogen, oxygen, argon, carbon dioxide, and other gases. Partial pressure is the pressure that each gas has in a mixture so that the pressure of each gas is not affected by the presence of other gases.

The partial pressure formula is:  

Ptotal = PNitrogen + Poxygen + PCarbon dioxide.

In question:

PO₂ 254 mm Hg = 33.9 kPa

PN₂ 0.351 atm = 35.5 kPa

PCO₂ = 43.9 kPa

So,

Ptotal = PO₂ + PN₂ + PCO₂

Ptotal = 33.9 kPa + 35.5 kPa + 43.9 kPa

Ptotal = 113.3 kPa

The pressure of a mixture of nitrogen, carbon dioxide and oxygen gases are 113.3 kPa.

Complete the question:

What is the pressure of a mixture of nitrogen carbon dioxide and oxygen gases if the pressures of these gases are as follows: PO2 = 254 mm Hg, PN2 = 0.351 ATM, and PCO2 = 43.9 kPa?

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6.022 ×10²³ atoms are present in 12.0 grams of carbon.

Mole (mol) is the amount of material counting 6.02214 × 10²³ particles

The value of the mole is equal to the number of atoms in exactly 12 grams of pure carbon-12.

12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 10²³ atoms

The number of particles in 1 mole is called Avogadro’s Number (6.0221421 x 10²³).

6.022 ×10²³atoms/1mol

or

1 mol/6.022 ×10²³ atoms

Molar Mass is the mass of 1 mol of atoms of an element

An element’s molar mass in g/mol is numerically equal to the element’s atomic mass in amu.

1 mol C/12.01 g C

or

12.01 g C/ 1mol C

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