What is the ph of a solution prepared by mixing 30.00 ml of 0.10 m ch3co2h with 30.00 ml of 0.030 m ch3co2k? assume that the volume of the solutions are additive and that ka = 1.8 x 10–5 for ch3co2h.

Answer:

d

Explanation:

Answer:

Answer is D.

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Explanation:

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The number of moles to the equations are as follows;

1. 0.800 mol     2. 0.0814 mol      3. 0.162 mol

4. 2.8197 mol   5. 1.8798 mol    6. 2.8917 mol     7. 4mol of  LiNO3 should make 2 mol of Li2SO4

1. 0.400 x (2/1) = 0.800 mole

2. 7.50(1/46.07) = 0.1628

0.1628(1/2) = 0.0814 mol

3. 7.50(1/46.07) = 0.1628

0.1628(2/2) = 0.1628 mol

4. 150(1/159.69) = 0.9399

0.9399(3/1) = 2.88197 mol

5. 150(1/159.69) = 0.9399

0.9399(2/1) = 1.898 mole

6.  0.9399(3/1) = 2.88197 mol

7. 250(1/109.94) = 2.2737 mole

The above answer is based on the information below, that was gotten from the picture;

Using the equation:

C6H12O6 → 2 C2H5OH + 2 CO2

6. How many moles of CO2 are produced when 0.400 mol of C6H12O6 react?

7. How many moles of C6H12O6 are needed to form 7.50 g of C2H5OH?

8. How many moles of CO2 form when 7.50 g of C2H5OH are produced?

Using the equation:

Fe2O3 + 3CO → 2 Fe + 3CO2

9. Calculate the number of moles of CO that can react with 150 g of Fe2O3.

10. Calculate the number of moles of Fe formed when 150 g of Fe2O3 reacts.

11. Calculate the number of moles of CO2 formed when 150 g of Fe2O3 reacts.

Using the equation:

Pb(SO4)2 + 4 LINO3 → Pb(NO3)4+2 Li2SO4

12. How many moles of lithium nitrate will be needed to make 250 grams of lithium sulfate?

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Answer: you go down by your key bad and use those arrows

Explanation:

Answer:

An ionic bond is a chemical bonding involving the attraction between oppositely charged ions

Explanation:

On the periodic table, elements from group 1 and 7 are attracted to each other and when they bond, it's called ionic bonding. This is because of their valence electrons and ions.

Answer:

Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds. It is one of the main types of bonding along with covalent bonding.

Answer:

NaNO3

Explanation:

NO3^-1 has a charge of minus 1.

Na^+1 has a charge of +1

When they combine, the charges are not noted. You get NaNO3

Sodium Nitrate

The answer is (E) 5.0 x 10^-3. KOH is a strong base, meaning it dissociates completely in water to form OH- ions

At equilibrium, a solution of a weak base in water is a mixture of the nonionized base, the conjugate acid of the weak base, and hydroxide ion with the nonionized base present in the greatest concentration. Thus, a weak base increases the hydroxide ion concentration in an aqueous solution (but not as much as the same amount of a strong base). . The concentration of OH- ions in a 0.0050 M KOH solution can be calculated using the equation:

[OH-] = Kw / [H+]

where Kw is the ion product constant for water (1.0 x 10^-14 at 25°C).

Since KOH is a strong base, we can assume that [OH-] is equal to the concentration of KOH (0.0050 M). Therefore:

[OH-] = 0.0050 M

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Answer

C₄H₆O₄

Explanation

Given:

The empirical formula of the compound is C₂H₃O₂

The molecular mass of the compound = 118.054 g/mol

To get the molecular formula of the compound, you need to know the actual number of atoms of each element by equating the empirical formula to the molecular mass as follows:

From the Periodic Table:

Molar mass of H = 1.00784 g/mol

Molar mass of O = 15.999 g/mol

Molar mass of C = 12.0107 g/mol

Hence, the molecular formula of the compound is:

Answer:

calcium oxide to nutriolise the acidity of the soil

The calcium oxide used to  neutralized the acidity of the soil substance should he add to neutralize the acid.

\(SO_{2} + H_{2}O\)→\(H_{2}SO_{4}\)

\(NO_{2} + H_{2}O\)→\(HNO_{2}\)

The reaction in which acid and base react together to form salt and water is called neutralization reaction.

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The density of the substance that has a mass of 4.2 grams and a volume of 6 milliliters is 0.7g/mL.

The density of a substance is a measure of the mass of matter contained by a unit volume.

The density of a substance can be calculated by dividing the mass of the substance by its volume.

According to this question, a sample of a substance has a mass of 4.2 grams and a volume of 6 milliliters. The density can be calculated thus;

Density = 4.2g ÷ 6mL

Density = 0.7g/mL

Therefore, the density of the substance that has a mass of 4.2 grams and a volume of 6 milliliters is 0.7g/mL.

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Sodium and lithium have similar chemical properties because both sodium and lithium have one valence electron

Chemical properties is the characteristics of particular substances that can be observed in a chemical reaction and the valence shell electrons in an atom determine the way it will interact with neighboring atoms and therefore determine its chemical properties and both sodium and lithium have one valence electron they share similar chemical properties and element sodium and lithium belong to group IA of the periodic table and the main characteristics is the a single electron in their outermost shell

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1) Beryllium. This element is in the second group and the second period. The atomic number is 4 which is the number of protons.

The mass number is the sum of neutrons and protons.

Assuming the element has no charge the number of electrons is equal to the number of protons.

Protons: 4.

Neutrons: the mass number - the atomic number = 9 - 4 = 5.

Electrons: 4.

Answer:

Explanation:

Edmentum

The arrangement of electrons within an atom's orbitals is known as its electronic configuration. The atomic number, which is equal to the number of protons in every neutral atom, is the set quantity of electrons that make up each neutral atom.

The distribution of an element's atoms' electrons throughout several atomic orbitals is symbolically represented by the electronic configuration of that element.

A standardized nomenclature is used for expressing electron configurations, in which the energy level and type of orbital are written first, followed by the number of electrons in the orbital, which is expressed in superscript.

The correct matches are:

Zn: [Ar] 3d¹⁰ 4s²

Fe: [Ar] 3d⁶ 4s²

Sn: [Kr] 4d¹⁰5s²5p²

Cl: [Ne] 3s² 3p⁵

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Answer:

Metallic character of the element

Explanation:

Explanation:

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Answer and Explanation:: Astronomy is the study space and what it contains. Astronomy should be studied by mankind because our survival is directly linked to the cosmos.  The Earth is heated by its nearest star, the Sun, and its ocean tides are directly connected to its only satellite, the Moon.  

Answer:

Astronomy is the study of stars and planets. It is important to humans because it helps us know if there is a supernova close to earth and more imformation about stars and planets that we need to know.

The net ionic equation for the reaction is: H⁺(aq) + OH⁻(aq) → H2O(l)

To write the net ionic equation for the chemical reaction:

HCN(aq) + KOH(aq) → H2O(l) + KCN(aq)

We first start by writing the balanced complete ionic equation, which includes all the species present in the reaction as ions:

HCN(aq) + KOH(aq) → H2O(l) + KCN(aq)

(Complete Ionic Equation)

H⁺(aq) + CN⁻(aq) + K⁺(aq) + OH⁻(aq) → H2O(l) + K⁺(aq) + CN⁻(aq)

In the complete ionic equation, we break down the ionic compounds into their constituent ions when they are in the aqueous state.

Next, we write the net ionic equation by eliminating the spectator ions. Spectator ions are the ions that appear on both sides of the equation and do not participate in the actual chemical reaction. In this case, the K⁺(aq) and CN⁻(aq) ions are spectator ions.

Net Ionic Equation:

H⁺(aq) + OH⁻(aq) → H2O(l)

In the net ionic equation, we remove the spectator ions (K⁺(aq) and CN⁻(aq)) from both sides of the equation, leaving only the ions that are directly involved in the reaction.

So, the net ionic equation for the given chemical reaction is:

H⁺(aq) + OH⁻(aq) → H2O(l)

This represents the actual chemical reaction that occurs when hydrocyanic acid (HCN) reacts with potassium hydroxide (KOH) to form water (H2O) and potassium cyanide (KCN).

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Answer:

Without the respiratory system your blood would be useless. The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body

Explanation:

Answer:

up there

Explanation:

TiCl₄+2H₂O⇔TiO₂+4HCl

The coefficient for titanium tetrachloride = 1

Equalization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:

1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc.

2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product

3. Select the coefficient of the substance with the most complex chemical formula equal to 1

Reaction

TiCl₄+H₂O⇔TiO₂+HCl

give coefficient

TiCl₄+aH₂O⇔bTiO₂+cHCl

Ti, left=1, right=b⇒b=1

Cl, left=4, right=c⇒c=4

H, left=2a, right=c⇒2a=c⇒2a=4⇒a=2

O, left=a, right=2b⇒a=2b⇒2=2.1⇒match

Balanced equation :

TiCl₄+2H₂O⇔TiO₂+4HCl

Answer:

the coefficient of TiCl4 would be 1

The only atom of the given that would have a formal charge of 0 is Option F: A nitrogen atom that forms four bonds and has no lone pairs.

This is because the formal charge of an atom is calculated by subtracting the number of valence electrons from the number of electrons in the outermost shell of the atom and then subtracting the number of lone pairs from the result. Since nitrogen has five valence electrons and it forms four bonds, it has a total of two electrons in its outermost shell. Since there are no lone pairs, the formal charge is 0. The formal charge of an atom is calculated by subtracting the number of valence electrons (usually assumed to be 8 for most atoms) from the number of electrons associated with the atom (the number of bonds formed plus the number of lone pairs).

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Answer:

For all atoms with no charge, the number of electrons is equal to the number of protons. The mass number, 40, is the sum of the protons and the neutrons. To find the number of neutrons, subtract the number of protons from the mass number.

Explanation:

Answer:

Letter C. Subtract the atomic number from the atomic mass

At body temperature, the amount of energy required to evaporate a substance depends on the substance itself.

Different substances have different heat of vaporization, which is the amount of energy required to change a unit mass of a substance from a liquid to a gas at constant temperature and pressure. For example, the heat of vaporization of water at body temperature is approximately 40.7 kJ/mol or 2260 J/g. This means that to evaporate one gram of water at body temperature, approximately 2260 joules of energy would be required. Without knowing the substance in question, it is difficult to determine the mass or quantity of a substance that requires 2404 J of energy to evaporate at body temperature. However, it is possible to calculate the amount of energy required to evaporate a given quantity of a substance at a specific temperature using the substance's heat of vaporization.

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answer : increasing pressure

the amount of gas that can be dissolved in liquid water increase with the increase in pressure

Answer:

increasing pressure

Explanation:

The ground state electronic configuration of Nitrogen atom is 1s²2s²2p³

The ground state electronic configuration of vanadium atom is 1s²2s²2p⁶3s²3p⁶4s²3d³

Electron configuration is the distribution of electrons within an atom or molecule (or other physical structure) in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s²2s²2p⁶. This means that the 1s, 2s and 2p subshells have 2, 2 and 6 electrons respectively.

The electronic configuration of a type of atom (neutral or ionic) allows us to understand the shape and energy of its electrons. Many general rules are followed in assigning an electron's "position" to its possible energy states, but these assignments are arbitrary and it is always unknown which electron is being described. Knowing the electronic configuration of a species allows us to better understand its binding ability, magnetism and other chemical properties.

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ANSWER

option A and B

EXPLANATION

An increase in temperature will increase the average kinetic energy of the molecule, thereby increasing the frequency of collision.

The correct answer are option A and B

Answer: Choice A

Explanation:

Acidic: a solution with a higher concentration of hydrogen ions (H⁺) than hydroxide ions (OH⁻), rainwater, lemon juice, solution with a pH of 6.

Neutral: a solution with equal concentrations of hydroxide ions (OH⁻) and hydrogen ions (H⁺), pure water, solution with a pH of 7.

Basic: a solution with a higher concentration of hydroxide ions (OH⁻) than hydrogen ions (H⁺), liquid soap, solution with a pH of 12.

The pH scale is a measure of the acidity or alkalinity of a solution. It ranges from 0 to 14, with 7 being considered neutral. A solution with a pH less than 7 is acidic, indicating a higher concentration of hydrogen ions (H⁺) relative to hydroxide ions (OH⁻) in the solution. As the pH decreases, the acidity of the solution increases.

A solution with a pH of 7 is considered neutral, meaning that the concentration of hydrogen ions is equal to the concentration of hydroxide ions, resulting in a balanced solution.

On the other hand, a solution with a pH greater than 7 is basic or alkaline. It indicates a higher concentration of hydroxide ions (OH⁻) relative to hydrogen ions (H⁺). As the pH increases, the basicity or alkalinity of the solution increases.

The pH scale provides a convenient way to categorize solutions as acidic, neutral, or basic based on their hydrogen ion concentration, helping us understand their chemical properties and behavior.

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Answer:

The word that best characterizes the Pardoner in this passage is hypocritical.

Explanation:

The Pardoner is against avarice, but as it turns out, he himself commits this sin.

The compound with the chemical formula NaBr is called sodium bromide. Sodium bromide is an ionic compound composed of sodium ions (Na+) and bromide ions (Br-). It is a white, crystalline solid that is highly soluble in water.

Sodium bromide is commonly used in various applications such as in the preparation of pharmaceuticals, as a sedative in medicine, and in the production of chemicals.

The compound with the chemical formula KHC03 is called potassium bicarbonate. It is composed of potassium ions (K+) and bicarbonate ions (HCO3-). Potassium bicarbonate is a white, crystalline solid that is also soluble in water. It is commonly used as a food additive, a buffering agent, and a fire extinguishing agent.

The compound with the chemical formula AlPO4 is called aluminum phosphate. It is composed of aluminum ions (Al3+) and phosphate ions (PO43-). Aluminum phosphate is a white, crystalline solid that is insoluble in water. It is used in various applications such as in the manufacturing of ceramics, as a catalyst, and in the production of certain types of glass.

The information you provided regarding "nabrrmula-compound-contains-polyatomic-ion-potassium-bicarbonate-aluminum-phosphate-co-q51530047" does not correspond to a known compound.

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