i need four reasons why ph is important!!!

Two isotopes of any particular element differs on the count of number of neutrons present on its nucleus.

Isotopes are particular atomic species (or nuclides, as specialized term) of a similar component. They have a similar nuclear number (number of protons in their cores) and position in the occasional table (and subsequently have a place with a similar synthetic component), however contrast in nucleon numbers (mass numbers) because of various quantities of neutrons in their cores. While all isotopes of a given component have practically similar substance properties, they have different nuclear masses and actual properties.

The term isotope is framed from the Greek roots isos and topos , signifying "a similar spot"; consequently, the importance behind the name is that various isotopes of a solitary component possess a similar situation on the periodic table. It was begat by Scottish specialist and essayist Margaret Todd in 1913 in an idea to the English scientist Frederick Soddy.

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Answer:

was constant

Explanation:

Good luck! :)

Answer:

B. was constant

Answer:

D) Blender..................

The first location of chemical and mechanical digestion is the stomach. This statement is false.

Digestion is the breaking down of large insoluble food molecules into smaller water-soluble food molecules so that they can be absorbed into the aqueous plasma. In certain organisms, these small substances are absorbed from the small intestine into the bloodstream. Digestion is important for breaking down food into nutrients that the body uses for energy, growth, and cell repair that it needs to survive.

The digestive system has many forms. A basic distinction is made between internal and external digestion. External digestion evolved early in evolutionary history, and most fungi still rely on it. During this process, enzymes are secreted into the organism's environment, where organic substances are decomposed and some of the products diffuse back into the organism. Animals have a tube (alimentary canal) where internal digestion takes place. This is more efficient as more decomposition products can be trapped and the internal chemical environment can be more effectively controlled.

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In reality, the three rules for formulating net ionic equations are rather simple. Only take into account fracturing the (aq) compounds. Break apart only powerful electrolytes. Ions that show up on both sides of the equation should be removed.

Therefore, Ag+ aqueous plus Br aqueous react to generate AgBr solid in the reaction between aqueous silver nitrate and potassium bromide solutions.

The chemical reaction between potassium chloride and silver nitrate, in which solid silver chloride is precipitated out, is one of the greatest examples of precipitation reactions. This is the precipitation reaction's byproduct, the insoluble salt. Chemical formula describing the reaction between lithium sulfate and barium chloride that results in the compounds lithium chloride and barium sulfate

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The pressure inside the vessel would be 15 atm if we increased the temperature of the vessel to 450 K at constant volume. As a result, Option D is right.

According to the Ideal Gas Law, the pressure inside the vessel is directly proportional to the temperature (Kelvin) and the number of moles of gas present in the vessel, if the volume is kept constant. In other words, if we increase the temperature of the gas, the pressure inside the vessel will also increase.

The Ideal Gas Law equation is:

Where:

Given that V is constant, we can rearrange the equation to solve for P:

Assuming that n and V are constants, then P is directly proportional to T. So, if the temperature increases by a factor of T2/T1, the pressure will increase by the same factor.

Let's say the initial pressure was 10 atm, and the initial temperature was 400 K. Then P1/T1 = 10 atm/400 K.

When the temperature is increased to 450 K, the pressure will become:

So, when the temperature of the vessel is increased to 450 K at constant volume, the pressure inside the vessel will increase, and the answer is "d. 15 atm".

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Answer:

combustible.

Explanation:

The substances which burn in air are called combustible. Oxygen (in air) is essential for combustion. During the process of combustion, heat and light are given out.

Hope this helped!!!

Answer: flammable

Explanation:

2Na(s)+2H2O(l)→2NaOH(aq)+H2(g)

According to my assumptions, you are to balance this chemical equation visually. Although using oxidation numbers to balance it would also work, I don't believe that's the right approach in this case.

As a result, your chemical equation is out of balance.

Na(s)+H2O(l)→NaOH (aq)+H2(g)

You'll notice that there are 3 hydrogen atoms on the side of the products, but only 2 on the side of the reactants.

A little experience may be helpful at this point. To get a total of 4 hydrogen atoms on the products' side, multiply the sodium hydroxide by 2.

As a result, you can easily To get four hydrogen atoms on the side of the reactants, multiply the number of water molecules by two.

so you have that now

Na(s)+2H2O(l)→2NaOH(aq)+H2(g)

By multiplying sodium metal by two, the sodium atoms are balanced.

2Na(s)+2HO(l)→2NaOH(aq)+H2(g)

Check to see if the oxygen atoms are balanced now. The equation is balanced because there are 2 hydrogen atoms on the side of the reactants and 2 on the side of the products.

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In addition to the light source (100W incandescent or other polychromatic light source) and detector, the spectrophotometer contains a prism or grating to capture different wavelengths from the light source and a slit to select a narrow range of wavelengths. is also required.

Spectrophotometry is a standard and inexpensive technique for measuring light absorption or the amount of chemicals in solution. Using a light beam that passes through the sample, each compound in solution absorbs or transmits light of a specific wavelength. A spectrophotometer consists of three main components: A light source, optics for delivering and collecting light, and a detector.  

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Ammonium ion and phosphate ion can form an ionic compound. The chemical formula of ammonium ion is NH4+ and that of phosphate ion is PO43-. Since both these ions are polyatomic ions, they contain a group of atoms bonded covalently. Ionic compounds are formed through the transfer of electrons from one atom to another.

The formula unit of the ionic compound formed between ammonium ion and phosphate ion can be determined using the criss-cross method.The criss-cross method involves writing the charges of the two ions in such a way that they balance each other out. For example, the charge of ammonium ion is +1 and the charge of phosphate ion is -3. In order to balance the charges, three ammonium ions combine with two phosphate ions to form the compound. The criss-cross method can be written as:NH4+ PO43-3 NH4+PO43-The molecular formula for an ionic compound cannot be determined since there are no molecules present in an ionic compound. Instead, ionic compounds are made up of formula units. The formula unit is the smallest repeating unit of the compound and it represents the empirical formula. The empirical formula represents the relative ratios of the atoms present in the compound.

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Answer:

A, And D

Explanation:

I did this before and i got it right ❤

Bycatch can negatively affect species consisting of seafood dolphins, sea turtles, protected fish, and whales by way of harming animals, contributing to population declines, and impeding populace recuperation.

Bycatch occurs because modern fishing is very efficient, often covers an extensive area, and can be highly unselective different influences of fisheries on marine mammals may additionally encompass elimination of their favored prey and once in a while habitat harm.

Bycatch is part of most business fishing operations. it's miles created whilst marine life is by chance stuck with the aid of fishing vessels. Fish and other undesirable aquatic animals are then tossed and returned to the ocean. Many are both lifeless or lose of life when they're thrown lower back.

Despite new technologies and the enterprise's reputation the difficulty, of bycatch continues to be a first-rate problem. now not handiest does it cause avoidable deaths and injuries, but the fishing strategies can be dangerous to the marine environments wherein they're employed.

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The temperature at which water vapor condenses is called the dew point.

The dew point is the temperature at which water vapor in the air condenses into visible water droplets. This process is also known as dew formation or dew precipitation. The dew point is the temperature at which air becomes saturated, meaning it can no longer hold all the water vapor it contains. As air cools, it can hold less moisture, causing water vapor to condense into liquid water. When the temperature of the air reaches the dew point, the water vapor begins to condense into visible water droplets.

In summary, the dew point is the key term for the temperature at which water vapor condenses, leading to the formation of dew or frost.

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Answer:

There are 2 nitrogen atoms on the product side.

There are 6 hydrogen atoms on the reactant side.

Explanation:

Answer:

There are  2  nitrogen atoms on the product side.

There are  6  hydrogen atoms on the reactant side.

Explanation:

As seen in the picture below,

It takes energy to dissolve connections. Energy is released as a result of the creation of bonds.

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Answer:

2.47 L. CO2

Explanation:

First, let's establish what we need to find. The volume of CO2 formed at a pressure of 2.50 atm and a temperature of 125 C. Now, don't let this overwhelm you. To find the volume of CO2 formed, we must first find the amount of CO2 formed.

But to find the amount of CO2 formed, we have to write out the equation for this reaction. The type of reaction depicted here is combustion, where oxygen gas reacts with a substance to form carbon dioxide and water. And we also know that this equation must be balanced, according to the Law of Conservation of Matter. It is as follows:

CH4 + 2 O2 => CO2 + 2 H2O.

Now that we have the equation of the reaction, we can now find which of the two reactants is the limiting reactant. To do this, we need to convert the volumes of methane and oxygen gas to moles. Simply use the Ideal Gas Law to do this, and you get:

Methane Gas: .189 mol     |     Oxygen Gas: 1.75 mol

Using the equation, we can then see that methane gas is the limiting reactant.

We know, also due to the equation that 1 mol of CO2 is produced for every mol of methane gas. This gives us the answer of .189 mol of CO2 produced. But remember, the question asks us for the volume of CO2 produced, so we must apply the Ideal Gas Law once again, getting the answer of 2.47 L. CO2.

Note: Please remember to use significant figures during your calculations, and if you have any questions, feel free to post them down below.

Answer:

The mole and atonmicity of both the gases are different, the number of atoms is not same.

Explanation:

The number of atoms in a molecule (compound) depends on mole number and atomicity.

↬ Mole of 100 g H₂ = 100g ÷ 2u = 50 mole

∴Number of atoms in 100 g H₂

= 2 x 50 x 6.022 × 10²³

= 6.022 x 10²⁴ atoms

↬ Mole of 100 g He = 100g ÷ 4u = 25 mole

∴ Number of atoms in 100 g He

= 1 × 25 × 6.022 × 10²³

= 150.55 × 10²³

= 1.5055 x 10²⁵ atoms

Thus, The mole and atonmicity of both the gases are different, the number of atoms is not same.

-TheUnknownScientist 72

Answer:

Touch, or contact, thermometers must touch the body in order to measure temperature. Remote, or no-contact, thermometers can measure body temperature without touching the skin.

Explanation:

hope this helps

Answer:  Discover ZEISS Solutions

Investigate soft materials like polymers, catalysts, coatings and chemicals to gain a better understanding of their properties. Analyze surface topography, chemical composition, tensile deformation and fracture patterns. Scroll down this page and discover microscopy characterization techniques and solutions from ZEISS enabling you to perform soft materials research in your lab efficiently.

Answer: Discover ZEISS Solutions

Investigate soft materials like polymers, catalysts, coatings, and chemicals to gain a better understanding of their properties. Analyze surface topography, chemical composition, tensile deformation, and fracture patterns. Scroll down this page and discover microscopy characterization techniques and solutions from ZEISS enabling you to perform soft materials research in your lab efficiently.

i have no idea  can somebody help me too

The procedure states that the chromatography paper cylinder should be stapled in a manner such that the edges of the paper do not touch because if the edges of the paper touch, it will wick the mobile phase up the sides of the paper, causing the chromatography to fail.

Chromatography is a technique for separating the components of a mixture that are dissolved in a mobile phase. The stationary phase is a liquid or a solid that remains immobile in one location, while the mobile phase is a liquid or gas that moves through the stationary phase. The separated components of the mixture can then be analyzed or identified based on their retention time or relative distance traveled.

It is critical that the paper cylinder be stapled in a manner such that the edges of the paper do not touch. This is due to the fact that if the edges of the paper touch, it will wick the mobile phase up the sides of the paper, causing the chromatography to fail. The chromatography paper is extremely absorbent, and if the mobile phase is permitted to wick up the edges of the paper, the stationary phase will be disrupted. As a result, the different components of the mixture will not separate effectively.

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This is a balanced chemical reaction equation since the number of atoms of each of the elements is the same on both sides of the reaction equation.

We know that the term chemical reaction has to do with the kind of interaction that does occur between reactants and products. In this case, we have the reaction that exists between methane and oxygen. This is a combustion reaction.

There is one carbon atoms on the reactant side and one carbon atom on the products side. There are four hydrogen atoms of the reactants side and fur hydrogen atoms on the products side. There are four oxygen atoms on the reactants side and four oxygen atoms on the products side.

There are two oxygen molecules on the reactants side and there are two water molecules on the products side. This is a balanced chemical reaction equation.

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Trial 1: 10% A, 20% B, 70% C = 8 ounces

Trial 2: 30% A, 40% B, 30% C = 12 ounces

Trial 3: 50% A, 20% B, 30% C = 10 ounces

Answer:

10oz

Explanation:

edge

It is a base because its pH is greater than 7

(not sure about the second sorry!)

Ionic bonds are created when two oppositely charged ions are attracted to one another by electrostatic force. A chemical element is uniquely defined by its atoms, which are tiny pieces of substance.

An atom is made up of a core nucleus and one or more negatively charged electrons that orbit it. The positively charged, comparatively hefty protons and neutrons that make up the nucleus may be present. Any elementary particle of matter with at least one proton is referred to as an atom. Examples of atoms are neon (N) and hydrogen (H) (Ne). Chemistry's fundamental building component is an atom. It is the lowest fraction of substance into which electrically charged particles cannot be released. It is also the smallest piece of substance with chemical element-like characteristics.

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The molar solubility of MgF₂ in Solution A is approximately 2.6 × 10⁽⁻¹⁰⁾ M. The molar solubility of MgF₂ in Solution A is lower than the molar solubility of MgF₂ in Solution B.

The molar solubility of MgF₂ in Solution A, we need to consider the common ion effect. In Solution A, MgF₂ is dissolved in a 0.10 M solution of MgBr₂, which contains Mg²⁺ ions. The presence of Mg²⁺ ions from MgBr₂ will reduce the solubility of MgF₂ due to the common ion effect.

The solubility product constant (Ksp) of MgF₂ is given as 5.2 × 10⁽⁻¹¹⁾. Let's assume the molar solubility of MgF₂ in Solution A is x M. Due to the dissociation of MgF₂, we can write the following equation:

MgF₂ (s) ⇌ Mg²⁺ (aq) + 2F⁻ (aq)

From the equation, we know that the concentration of Mg²⁺ ions in Solution A is also x M, since 1 mole of MgF₂ dissociates to form 1 mole of Mg²⁺ ions. Therefore, the total concentration of Mg²⁺ ions in Solution A is 0.10 M + x M.

According to the solubility product expression for MgF₂, we have:

Ksp = [Mg²⁺][F⁻]²

Substituting the concentrations, we get:

5.2 × 10⁽⁻¹¹⁾ = (0.10 M + x M)(x M)²

Simplifying and solving the quadratic equation, we find that x ≈ 2.6 × 10⁽⁻¹⁰⁾ M.

Therefore, the molar solubility of MgF₂ in Solution A is approximately 2.6 × 10⁽⁻¹⁰⁾ M.

Now, comparing the molar solubility of MgF₂ in Solution A to the molar solubility of MgF₂ in Solution B, we can conclude that the molar solubility of MgF₂ in Solution A (2.6 × 10⁽⁻¹⁰⁾ M) is lower than the molar solubility of MgF₂ in Solution B.

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Answer:

New covalent bonds form between oxygen atoms and hydrogen atoms.

Explanation:

For example, when hydrogen gas, H2(g), is burned in the presence of gaseous oxygen, O2(g), a new substance, liquid water, H2O(l ), forms. The covalent bonds within the H2 molecules and O2 molecules break, and new covalent bonds form between oxygen atoms and hydrogen atoms (Figure 7.1).

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

density = 5.8 g/ml

volume = final volume of water - initial volume of water

volume = 12.4 - 10.5 = 1.9 mL

The mass of the rock is

mass = 5.8 × 1.9

We have the final answer as

Hope this helps you

Answer:

110.2 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

For the following solutions:

Acidic, basic, and neutral are terms used to describe the pH (power of hydrogen) of a solution.

pH is a measure of the concentration of hydrogen ions (H+) in a solution, with lower pH values indicating higher concentrations of H+ (acidic), higher pH values indicating lower concentrations of H+ (basic), and pH 7 indicating equal concentrations of H+ and hydroxide ions (OH-) (neutral).

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