Identify the conjugate acid for each base.
conjugate acid of HSO4−
conjugate acid of SO42−
conjugate acid of NH3

Answer:

Because heat flows from warmer objects to cooler objects

Explanation:

Answer:

Answer choice c  = 174

Explanation:

If you divide 30% into 580 you get 174. You can also check your work by doing 580 divided by 70%

30% divided by 580 = 174

Answer:

if i remember correctly it's B

Explanation:

The heat generated by the freezing of 2.5g of water is 2.5 g * 1 mol/18.02 g/mol * -285.83 kJ/mol.

The term freezing has to do with the change of water from liquid to solid. This is accompanied by an enthalpy change.

From the options that are presented in the question, the heat generated by the freezing of 2.5g of water is 2.5 g * 1 mol/18.02 g/mol * -285.83 kJ/mol.

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Answer:

133.333333333 cm^3

Explanation:

Volume = Mass/Density

Answer:

Ito din po ang tanong ko

Explanation:

Any one na makakasagot

Answer: hydrogen bond

Explanation:

just becuase

Answer:

MCO₃ (s) -> MO (s) + CO₂ (g)

Explanation:

M = a metal

This process is called calcination and is generally used to remove impurities. It's most common use is to remove carbon from limestone.

CaCO₃ (s) -> CaO (s) + CO₂ (g)

Taking into account the definition of density, the density of the pen is 1.8523 g/mL.

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space and it is a quantity that allows to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is:

density= mass÷ volume

From this expression it can be deduced that density is inversely proportional to volume.

In this case, you know that:

Replacing in the definition of density:

density= mass of the pen÷ volume of the pen

density= 24.08 g÷ 13 mL

Solving:

density= 1.8523 g/mL

In summary, the density of the pen is 1.8523 g/mL.

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Answer:

yes

Explanation:

The reaction between sodium hydroxide and hydrochloric acid is considered as a neutralization reaction.

Neutralization reaction is a chemical reaction in which an acid reacts with a base to produce salt and water as a product. In this reaction, an acid (hydrochloric acid) and a base (sodium hydroxide) neutralize each other and form salt (sodium chloride) and water (H2O).HCl + NaOH → NaCl + H2O.

Therefore, the type of reaction between sodium hydroxide and hydrochloric acid is a Neutralization reaction. The reaction between sodium hydroxide and hydrochloric acid is considered as a neutralization reaction.

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Consider an atom moving in a vacuum. provide an appropriate expression for kinetic energy according to:

The expression for the kinetic energy (KE) of an atom moving in a vacuum is given by:

The atom is a basic unit of matter, consisting of an atomic nucleus and a cloud of negatively charged electrons that surrounds it. The atomic nucleus consists of positively charged protons and neutrally charged neutrons (except in the atomic nucleus of Hydrogen-1, which has no neutrons).

The electrons in an atom are bound to the nucleus by electromagnetic forces. A collection of such atoms can also bond with each other, and form a molecule. Atoms containing the same number of protons and electrons are neutral, while those containing a different number of protons and electrons are positive or negative and are called ions. Atoms are grouped based on the number of protons and neutrons contained in the atomic nucleus. The number of protons in an atom determines the chemical element of that atom, and the number of neutrons determines the isotope of that element.

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Answer:

3,3 Methyl hexyne

I hope it's helps you

a. The chemical reaction can be rewritten as a word equation as follows:

Hydrogen Peroxide -> Oxygen + Water

b. Evidence that a chemical reaction has occurred includes the production of a new substance (oxygen and water), a change in the physical properties of the reactants (change in color, odor, or temperature), and the release of energy (evolution of oxygen gas).

c. The reaction is likely exothermic, which means it releases energy. This is because the reaction produces new substances (oxygen and water) and releases energy in the form of oxygen gas. In an endothermic reaction, the reactants would absorb energy from the surroundings.

Answer:

C. the amount of drug x given to mice

The most likely cause of earthquakes that occur in the area shown on the map is due to fault lines in the earth's crust.

Earthquakes are natural phenomena characterized by the shaking or trembling of the Earth's surface.

They occur due to the sudden release of energy in the Earth's crust along fault lines, which creates seismic waves that propagate through the Earth.

The Earth's crust is composed of several large tectonic plates that float on the semi-fluid layer of the Earth's mantle.

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Answer:

(glucose and amino acids) and molecules from air (oxygen) in its cells.

Explanation:

Answer:

INTENSIVE PROPERTY OF MATTER

Explanation:

DENSITY IS AN INTENSIVE PROPERTY OF MATTER THAT ILLUSTRATES HOW MUCH MASS A SUBSTANCE HAS IN A GIVEN AMOUNT OF VALUE,

Part A:

To find the pH of a 0.130 M solution of a weak monoprotic acid with Ka = 1.0×10-5, we can use the following equation:

Ka = [H+][A-]/[HA]

Where [H+] is the concentration of hydrogen ions, [A-] is the concentration of the conjugate base, and [HA] is the concentration of the weak acid. Since the acid is monoprotic, the concentration of the acid is the same as the concentration of the initial solution.

We can set up an ICE table to find the concentration of each species:

HA + H20 ↔ H3O+ + A-

↔ H3O+ + A-I 0.130 M 0 M 0 M

↔ H3O+ + A-I 0.130 M 0 M 0 MC -x +x +x

↔ H3O+ + A-I 0.130 M 0 M 0 MC -x +x +xE 0.130-x x x

Substituting these values into the Ka expression, we get:

1.0×10^-5 = (x^2)/(0.130-x)

Solving for x using the quadratic formula, we get x = 3.162×10^-3 M. This is the concentration of [H+].

Taking the negative log of [H+], we get the pH:

pH = -log[H+] = -log(3.162×10^-3) = 2.50

Therefore, the pH of a 0.130 M solution of a weak monoprotic acid with Ka = 1.0×10-5 is 2.50

Part B:

To find the percent ionization of the weak acid, we can use the equation:

% Ionization = ([H+]/[HA]) × 100

% Ionization = ([H+]/[HA]) × 100From Part A, we found that [H+] = 3.162×10^-3 M and [HA] = 0.130 M, so:

% Ionization = ([H+]/[HA]) × 100From Part A, we found that [H+] = 3.162×10^-3 M and [HA] = 0.130 M, so:% Ionization = (3.162×10^-3/0.130) × 100 = 2.43%

Therefore, the percent ionization of a 0.130 M solution of a weak monoprotic acid with Ka = 1.0×10−5 is 2.43%.

Part C:

To find the pH of a 0.130 M solution of a weak monoprotic acid with Ka = 1.3×10^-, we can use the same method as in Part A.

Setting up an ICE table:

HA + H2O ↔ H3O+ + A-

HA + H2O ↔ H3O+ + A-I 0.130 M 0 M 0 M

HA + H2O ↔ H3O+ + A-I 0.130 M 0 M 0 MC -x +x +x

HA + H2O ↔ H3O+ + A-I 0.130 M 0 M 0 MC -x +x +xE 0.130-x x x

Substituting these values into the Ka expression, we get:

1.3×10^-3 = (x^2)/(0.130-x)

Solving for x, we get x = 0.0361 M. This is the concentration of [H+].

Taking the negative log o [H+], we get the pH:

pH:pH = -log[H+] = -log(0.0361) = 1.44

Therefore, the pH of a 0.130 M solution of a weak monoprotic acid with Ka = 1.3×10^-3 is 1.44.

Ka = 1.3×10^-3 is 1.44.Part D:

To find the percent ionization of the weak acid, we can use the same equation as in Part B:

% Ionization = ([H+]/[HA]) × 100

% Ionization = ([H+]/[HA]) × 100From Part C, we found that [H+] = 0.0361 M and [HA] = 0.130 M, so:

% Ionization = ([H+]/[HA]) × 100From Part C, we found that [H+] = 0.0361 M and [HA] = 0.130 M, so:% Ionization = (0.0361/0.130) × 100 = 27.8%

Therefore, the percent ionization of a 0.130 M solution of a weak monoprotic acid with Ka = 1.3×10^-3 is 27.8%.

Part E:

To find the pH of a 0.130 M solution of a weak monoprotic acid with Ka = 0.13, we can use the same method as in Part A

Setting up an ICE table:

HA + H2O ↔ H3O+ + A-

HA + H2O ↔ H3O+ + A-I 0.130 M 0 M 0 M

HA + H2O ↔ H3O+ + A-I 0.130 M 0 M 0 MC -x +x +x

HA + H2O ↔ H3O+ + A-I 0.130 M 0 M 0 MC -x +x +xE 0.130-x x x

Substituting these values into the Ka expression, we get:

0.13 = (x^2)/(0.130-x)

Solving for x, we get x = 0.191 M. This is the concentration of [H+].

Taking the negative log of [H+] we get the pH:

Therefore, the pH of a 0.130 M solution of a weak monoprotic acid with Ka = 0.13 is 0.72.

Part F:

To find the percent ionization of the weak acid, we can use the same equation as in Part B:

% Ionization = ([H+]/[HA]) × 100

% Ionization = ([H+]/[HA]) × 100From Part E, we found that [H+] = 0.191 M and [HA] = 0.130 M, so:

% Ionization = ([H+]/[HA]) × 100From Part E, we found that [H+] = 0.191 M and [HA] = 0.130 M, so:% Ionization = (0.191/0.130) × 100 = 147%

Note that the percent ionization is greater than 100%. This is because the acid is relatively strong (compared to the previous examples) and ionizes to a greater extent.

Note that the percent ionization is greater than 100%. This is because the acid is relatively strong (compared to the previous examples) and ionizes to a greater extent.Therefore, the percent ionization of a 0.130 M solution of a weak monoprotic acid with Ka = 0.13 is 147%.

Explanation:

It should be decreasing, and the potential energy increasing, since Law of Conversation of Energy, right?

Also, if you think about what happens when it goes down, it loses potential and gains kinetic, so maybe the opposite should happen when it goes up.

Answer:

it's decreasing

Explanation:

as you know a roller coaster loses speed as it ascends and the kinetic energy is proportional to the speed according to it's formula

KE=(mv^2)/2

where m is the mass and v is the speed

Given that there are two small nonconducting spheres with a total charge of Q and it is given that Q = Q₁ + Q₂ = 87.0 μC.

Part A: Since the force exerted by sphere 2 on sphere 1 is equal and opposite to the force exerted by sphere 1 on sphere 2, this means the distance between the centers of the two spheres is equal to the radius of the sphere.

Therefore, the distance between their centers, d = 2r = 31.0 cm.So, the force of repulsion isF = 130 NThe electrostatic force of repulsion between two charged spheres is given by the formulaF = kQ₁Q₂/d²where

k = 9 x 10⁹ Nm²/C² is the Coulomb constant.Rearranging the above equation, we ge

tQ₂ = Fd²/kQ₁

= (130 N) (31.0 cm)²/ (9 x 10⁹ Nm²/C²)Q₁= 87.0 μCQ₂

= (130 N) (31.0 × 10⁻² m)²/ (9 x 10⁹ Nm²/C²)(Convert the distance into meters)Q₂

= 4.96 μCThus, the charge Q₁

= 87.0 μC, and the charge Q₂

= 4.96 μC.

Part B: If the force were attractive, the direction of the force would have been opposite. Therefore, the charge Qᵢ would be negative. Thus, for the same distance and force,F = kQ₁Q₂/d²=-130 NAs the force is negative, the charges must be opposite in sign, which means one is positive, and the other is negative.

We can take Q₁ to be positive. So,Q₂ = -F d²/kQ₁

= -(130 N) (31.0 × 10⁻² m)²/ (9 x 10⁹ Nm²/C²) (87.0 × 10⁻⁶ C)

= -2.34 μCThus, Qᵢ

= -2.34 μC (negative, as expected).Hence, Q₁

= 87.0 μC, Q₂

= 4.96 μC, and Qᵢ

= -2.34 μC.

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Answer:

its a conductor

Explanation:

Conductors allow electricity to flow through them like metal wires

Answer: It is a conductor because a conductor allows electricity or heat to pass through and it is right because i took the quiz

Answer:

The kelvin planck expression of the second law of thermodynamics because it is impossible to devise of heat engine that take heat from hpt reservoir.

The de Broglie wavelength is given by λ = h/p, where h is Planck's constant and p is the momentum of the particle. Since all three particles are moving at the same speed, their momenta will be different due to their different masses.

First, let's calculate the momentum of each particle. The momentum of a particle is given by p = mv, where m is the mass of the particle and v is its velocity.
For the proton, m = 1.00728 u (atomic mass units) and v = v, so p = 1.00728v u.
For the electron, m = 0.00054858 u and v = v, so p = 0.00054858v u.
For the helium nucleus, m = 4.0026 u and v = v, so p = 4.0026v u.
Now, let's calculate the de Broglie wavelength for each particle using λ = h/p.
For the proton, λ = h/(1.00728v) u.
For the electron, λ = h/(0.00054858v) u.
For the helium nucleus, λ = h/(4.0026v) u.

Since h is a constant and the particles are moving at the same speed, the order of their de Broglie wavelengths will be determined by their momenta, which in turn are determined by their masses. Therefore, the order of the de Broglie wavelengths from largest to smallest is:
Helium nucleus > Proton > Electron

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Answer: The sun's radiation strikes the ground, thus warming the rocks. As the rock's temperature rises due to conduction, heat energy is released into the atmosphere, forming a bubble of air which is warmer than the surrounding air.

Explanation:

Answer:

Isotopes are forms of a chemical element that have the same atomic number but differ in mass. 16O → 8 protons + 8 neutrons; a “light” oxygen); The relative amounts are expressed as either 18O/16O or δ 18O Oxygen - 18 (aka 18O → 8 protons + 10 neutrons; a “heavy” oxygen).

Molecular geometry refers to how atoms are arranged within a molecule, typically in relation to a single center atom. Because the nitrogen is sp3 hybridized, it possesses four sp3 hybrid orbitals.

By taking into account both lone pairs and bond pairs, electron pair geometry can forecast the form of a molecule. By merely taking into account bond pairs, molecular geometry may predict the form of a molecule.

The nitrogen atom likewise hybridizes in the sp2 configuration, but unlike the carbon atom, it has a "lone pair" of remaining electrons that are not involved in the bonding. As a result, the geometry of nitrogen with three bonded ligands is trigonal pyramidal.

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Answer:

each compound or molecule is indicated in subscript next to the compound by an abbreviation in parentheses. For example, a compound in the gas state would be indicated by (g), solid (s), liquid (l), and aqueous (aq).

Explanation:

The ion that will form a compound with bicarbonate in a 1:1 cation to anion ratio is hydrogen ion (H+).

Bicarbonate (HCO3-) is an anion that can combine with a cation to form a salt. In a 1:1 cation to anion ratio, the cation must have a charge of +1 to balance the -1 charge of the bicarbonate anion. Hydrogen ion (H+) is a monovalent cation with a charge of +1, and it readily combines with bicarbonate to form the salt hydrogen bicarbonate (H2CO3), also known as carbonic acid. This salt is important in the regulation of pH in the body and is involved in processes such as respiration and acid-base balance.

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