Which of the following is not a strong acid? HNO3 HC2H3O2 (aka CH3COOH) All are strong acids. HCI H2SO4

Answer:

electrons

Explanation:

Of the three subatomic particles, electrons are most involved in forming chemical bonds.

Answer:

A solution contains 0.100 mol of NaCl dissolved in 8.60 mol of water.

Answer: 1 mole

Explanation:

One mole reacts because there is a 1:1 ratio between the potassium and water at the beginning of the equation. 2K+2H2O has a 1 to 1 ratio. If one potassium reacts there is one h2o that also reacts.

Taking into account the reaction stoichiometry, if one mole of potassium reacts, 1 mole of water are consumed.

In first place, the balanced reaction is:

2 K + 2 H₂O → 2 KOH + H₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The amount of water consumed is calculated from the following rule of three: if by stoichiometry 2 moles of K react with 2 moles of H₂O, 1 mole of K react with how many moles of H₂O?

\(amount of moles of H_{2} O=\frac{1 mole of Kx2 moles ofH_{2} O }{2 moles of K}\)

amount of moles of H₂O= 1 mole

In summary, if one mole of potassium reacts, 1 mole of water are consumed.

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Answer:

\(M_{base}=6M\)

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to realize this is a question about titration, which base solved by knowing that the HCl reacts with the NaOH in a 1:1 mole ratio, and therefore, we can write the following:

\(M_{acid}V_{acid}=M_{base}V_{base}\)

Thus, we solve for the molarity of the base, NaOH, as shown below:

\(M_{base}=\frac{M_{acid}V_{acid}}{V_{base}} \\\\M_{base}=\frac{3L*2M}{1.00L}\\\\M_{base}=6M\)

Regards!

Answer:

1.98 M

Explanation:

Step 1: Write the balanced reaction

2 NH₃ + 3 BrO⁻⟶ N₂ + 3 Br⁻ + 3 H₂O

Step 2: Calculate the moles corresponding to 0.325 g of ammonia

The molar mass of NH₃ is 17.03 g/mol.

0.325 g × (1 mol/17.03 g) = 0.0191 mol

Step 3: Calculate the reacting moles of hypobromite

The molar ratio of NH₃ to BrO⁻ is 2:3. The reacting moles of hypobromite are 3/2 × 0.0191 mol = 0.0287 mol

Step 3: Calculate the molar concentration of the hypobromite solution

M = 0.0287 mol / 0.0145 L = 1.98 M

The concentration of the hypobromite solution (BrO⁻) needed for the reaction is 1.97 M

We'll begin by calculating the number of mole in 0.325 g of NH₃. This can be obtained as follow:

Mass of NH₃ = 0.325 g

Molar mass of NH₃ = 17.031 g/mol

Mole = mass / molar mass

Mole of NH₃ = 0.325 / 17.031

Next, we shall determine the number of mole of BrO⁻ needed to react with 0.01908 mole of NH₃. This can be obtained as follow:

2NH₃ + 3BrO⁻ —> N₂ + 3Br⁻ + 3H₂O

From the balanced equation above,

2 moles of NH₃ reacted with 3 moles of BrO⁻.

Therefore,

0.01908 mole of NH₃ will react with = \(\frac{0.01908 * 3 }{2}\\\\\) = 0.02862 mole of BrO⁻.

Finally, we shall determine the concentration of the BrO⁻ solution.

Mole of BrO⁻ = 0.02862 mole

Volume of BrO⁻ solution = 14.5 mL = 14.5 / 1000 = 0.0145 L

Concentration = mole / Volume

Concentration of BrO⁻ = 0.02862 / 0.0145

Therefore, the concentration of the hypobromite solution (BrO⁻) is 1.97 M

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Explanation:

When balancing a chemical equation, the number of elements on the left hand side of the equation must be equal tot he number elements on the right hand side of the equation.

Answer:

1) Chemical change. In a chemical change, new substances are formed. We can evidence this by changes in color, odour or formation gases, or solids (precipitate).

The disappearance of sugar is a dissolution of a solid in a liquid. There is NOT a chemical reaction involved.

Option A.

An exothermic reaction releases 325 kJ. 1359.8 kJ energy is this in calories.

An exothermic reaction is a chemical reaction that releases heat energy into the surroundings. During an exothermic reaction, the products of the reaction have less potential energy than the reactants, and the excess energy is released in the form of heat.

One calorie is defined as the amount of energy required to raise the temperature of one gram of water by one degree Celsius.

One joule is defined as the amount of energy required to apply a force of one newton over a distance of one meter.

1 cal = 4.184 J

1 cal = 0.004184 kJ

325000 cal = x kJ

0.004184/ 1 = x / 325000

x = 1359.8 kJ

Thus, 1359.8 kJ energy is this in calories.

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Answer: trigonal bipyramidal

Explanation:

Number of electron pairs = \(\frac{1}{2}[V+N-C+A]\)

V = number of valence electrons present in central atom

N = number of monovalent atoms bonded to central atom

C = charge of cation

A = charge of anion

\(SbCl_5\) :

In the given molecule, antimony is the central atom and there are five chlorine as monovalent atoms.

The number of electron pairs are 5 that means the hybridization will be \(sp^3d\) and geometry of the molecule will be trigonal bipyramidal.

The maximum distance between the two white balls is 2R, and the maximum angle between them is 180 degrees (or π radians).

Maximum distance between the balls:

The maximum distance between the two white balls will be achieved when they are placed at opposite ends of a diameter of the circular region.

In this case, the distance between them will be equal to the diameter of the circle, which is 2R.

Maximum angle between the balls:

To find the maximum angle between the two balls, imagine the center of the circle as the vertex of the angle, and the positions of the two balls as the endpoints of the angle's two sides.

Since the balls are located at opposite ends of a diameter, the angle formed will be a straight angle, which is 180 degrees (or π radians).

So, the maximum distance between the two white balls is 2R, and the maximum angle between them is 180 degrees (or π radians).

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Two white balls, A and B, are placed on a flat surface inside a circular region of radius R. What is the maximum distance and maximum angle between the balls that can be achieved

The final temperature of the two blocks is 406.5 K. We can use the principle of heat transfer, which states that heat flows from a hotter object to a colder object until they reach the same temperature.

Calorimetry is a technique used to gauge how much heat is produced or absorbed during a chemical reaction. It is possible to tell whether a reaction is exothermic (releases heat) or endothermic by knowing the change in heat (absorbs heat).

Q = m * c * ΔT

Q_gold = Q_copper

Substituting the given values, we get:

m_gold * c_gold * (T_final - 686 K) = m_copper * c_copper * (T_final - 329 K)

where T_final is the final temperature of the two blocks.

Substituting the specific heat capacities of gold and copper, we get:

\(100 g * 0.129 J/g ^\circC * (T_final - 686 K) = 50.0 g * 0.385 J/g ^\circC * (T_final - 329 K\)

Simplifying and solving for T_final, we get:

12.9 (T_final - 686) = 19.25 (T_final - 329)

12.9 T_final - 8861.4 = 19.25 T_final - 6283.25

6.35 T_final = 2578.15

T_final = 406.5 K

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Answer:

0.0012 mol/L.

Explanation:

From the question given above, the following data were obtained:

Number of mole of AgNO₃ = 62.3 μmol

Volume = 50 mL

Molarity of AgNO₃ =?

Next, we shall convert 62.3 μmol to mole. This can be obtained as follow as follow:

1 μmol = 10¯⁶ mole

Therefore,

62.3 μmol = 62.3 × 10¯⁶

62.3 μmol = 62.3×10¯⁶ mole

Next, we shall convert 50 mL to L. This can be obtained as follow:

1000 mL = 1 L

Therefore,

50 mL = 50 mL × 1 L / 1000 mL

50 mL = 0.05 L

Finally, we shall determine the concentration of AgNO₃ in mol/L as follow:

Number of mole of AgNO₃ = 62.3×10¯⁶ mole

Volume = 0.05 L

Molarity of AgNO₃ =?

Molarity = mole /Volume

Molarity of AgNO₃ = 62.3×10¯⁶ / 0.05

Molarity of AgNO₃ = 0.0012 mol/L

Thus, the concentration of AgNO₃ is 0.0012 mol/L

Answer:

Any Group 2A element (Be, Mg, Ca, Sr, Ba, Ra)

Explanation:

According to the Octet Rule, Sulfur would want to gain two electrons in its outermost shell to achieve an octet (8 total electrons).  The elements that could accomplish this in a one-to-one ratio would be Group 2A on the periodic table (alkaline earth metals).

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, alkaline earth metals are the suitable elements.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.

The compound that is ionic in nature can be dissociated very easily in water. Since ionic compounds are polar in nature, they readily dissolve in water.  The elements that could accomplish this in a one-to-one ratio would be  alkaline earth metals

Therefore, alkaline earth metals are the suitable elements.

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Answer:

The Earth’s lithosphere, which includes the crust and upper mantle, is made up of a series of pieces, or tectonic plates, that move slowly over time.

A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge and Pacific Ring of Fire are two examples of divergent plate boundaries.

Answer: Divergent

Explanation: im pretty sure its a multiple choice question

Answer:

Mushroom cells

Explanation:

They are mushroom cells because they are together.

Answer:

3 is c but im unable to see the 2nd questions picture

Explanation:

Answer:

Fe + CuCl2 = FeCl2 + Cu

Explanation:

This is already balanced.

0.02314 moles of  NO₂ can be formed from the decomposition of 1.25 g of dinitrogen pentoxide.

The balanced equation for the decomposition of dinitrogen pentoxide is:

2 N₂O₅ → 4 NO₂ + O₂

The molar mass of N₂O₅  is 108.01 g/mol.

To determine the number of moles of N₂O₅  present in 1.25 g, we use the following calculation:

moles N₂O₅  = mass / molar mass

moles N₂O₅ = 1.25 g / 108.01 g/mol

moles N₂O₅ = 0.01157 mol

From the balanced equation, we can see that 2 moles of N₂O₅  decompose to form 4 moles of NO2. Therefore, the number of moles of NO2 produced can be calculated as:

moles  NO₂ = (0.01157 mol N2O5) × (4 mol NO2 / 2 mol N2O5)

moles  NO₂ = 0.02314 mol

Therefore, 0.02314 moles of  NO₂ can be formed from the decomposition of 1.25 g of dinitrogen pentoxide.

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IUPAC (International Union of Pure and Applied Chemistry) naming is also known as systematic naming.

It is a set of rules and guidelines used to name chemical compounds systematically. It provides a standardized method for naming organic and inorganic compounds based on their molecular structure and composition.

The longest continuous carbon chain in the compound is identified as the parent chain.

The IUPAC name of the given compounds are:

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Answer:

281 g KClO₃

Explanation:

To find the mass of potassium chlorate (KClO₃), you need to

(1) calculate the number of moles O₂ (using the Ideal Gas Law)

(2) create a balanced equation involving KClO₃ and O₂

(3) convert moles O₂ to moles KClO₃ (using mole-to-mole ratio from balanced equation)

(4) convert moles KClO₃ to grams (using the molar mass of KClO₃)

It is important to arrange the ratios/conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs like the given values.

(Step 1)

To find the amount of moles O₂, you need to use the Ideal Gas Law equation:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = number of moles

-----> R = Ideal Gas Constant (0.08206 atm*L/mol*K)

-----> T = temperature (K)

You can plug the given values into the equation and simplify to solve for "n".

P = 0.720 atm                    R = 0.08206 atm*L/mol*K

V = 114.0 L                          T = 291 K

n = ? moles

PV = nRT                                                      <----- Ideal Gas Law Equation

(0.720 atm)(114.0 L) = n(0.08206 atm*L/mol*K)(291 K)      <----- Insert values

82.08 atm*L = n(23.879 atm*L/mol)           <----- Simplify both sides (multiply)

3.44 moles = n                                            <----- Divide both sides by 23.879

(Step 2)

Unbalanced Equation: KClO₃ (s) -----> KCl (s) + O₂ (g)

Reactants: 1 potassium, 1 chlorine, 3 oxygen

Products: 1 potassium, 1 chlorine, 2 oxygen

As you can see, the amount of each type of atom is not identical on both sides of the reaction. To balance the equation, you can add coefficients in front of particular molecules/elements to alter the amount of each atom type.

Balanced Equation: 2 KClO₃ (s) -----> 2 KCl (s) + 3 O₂ (g)

Reactants: 2 potassium, 2 chlorine, 6 oxygen

Products: 2 potassium, 2 chlorine, 6 oxygen

(Step 3 + 4)

Atomic Mass (K): 39.098 g/mol

Atomic Mass (Cl): 35.453 g/mol

Atomic Mass (O): 15.999 g/mol

Molar Mass (KClO₃): 39.098 g/mol + 35.453 g/mol + 3(15.999 g/mol) = 122.548 g/mol

3.44 moles O₂           2 moles KClO₃            122.548 g
------------------------  x  -------------------------  x  -----------------------  =  281 g KClO₃
                                      3 moles O₂             1 mole KClO₃

Answer:

61.9 g C3H8

Explanation:

First write and balance equation

C3H8 + 5O2 -> 3CO2 + 4H2O

Next find the limiting reactant

25.0g propane/ 44.097 g propane = 0.567 mol propane

(75.0gO2)(1mol C3H8)/ (32g)(5mol O2)= 0.468 mol propane

Since O2 is the limiting reactant now we can find the mass of CO2

(75.0g O2)(1 mol O2)( 3 mol CO2)(44.01 g CO2)/(32g O2)(5 mol O2)( 1 mol CO2) =61.9g CO2

Answer:

correct option is (a)

The solution would be using this: C6H5COOH = H+ + C6H5COO Ka = 6.5 x 10^-5 = (H+)(C6H5COO-) over

(C6H5COOH)

Let X = moles per liter (H+) and also = moles per liter (C6H5COO-)

Ka = 6.5 x 10^-5 = (X)(X) over .350 molar = acid solution 6.5 x 10^-5 = X^2 over .350

X^2 = 6.5 x 10^-5 times .350 which = 2.275 x 10^-5

x = V2.275 x 10^-5

X = 1.5083 x 10^-5 moles per liter H+

pH = -log(H+) = -log 1.5083 x 10^-5 which

= 4.6215

The pH of a 0.350 M aqueous benzoic acid solution is 4.64. The correct option is a).

In chemistry, the pH scale is used to define the acidity or basicity of an aqueous solution. Historically, pH stood for "potential of hydrogen."

The solution would be using this: C₆H₅COOH = H+ + C₆H₅COO Ka = 6.5 x 10⁻⁵ = (H+)(C₆H₅COO-) over

(C₆H₅COOH)

Let X = moles per liter (H+) and also = moles per liter (C6H5COO-)

Ka = 6.5 x 10⁻⁵ = (X)(X) over .350 molar = acid solution 6.5 x 10⁻⁵= X² over .350

X² = 6.5 x 10⁻⁵ times .350 which = 2.275 x 10⁻⁵

x = V2.275 x 10⁻⁵

X = 1.5083 x 10⁻⁵ moles per liter H+

pH = -log(H+) = -log 1.5083 x 10⁻⁵  = 4.6215

Therefore, the pH is 4.6215. The correct option is a). round to 4.64.

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Answer:

Explanation:

40/ 180.2 x (-16 / 1 mole glucose)=-3.6 KJ

Answer:

1. more slowly than

2. larger than

3. weaker

Explanation:

Acetone molecules are bonded by very weak intermolecular forces when compared to that of the hydrogen bond between water molecules. This makes it very easy for acetone molecules to vaporize easily into its gaseous state, much more faster than water molecules (since the acetone molecules need a lesser amount of energy to break these bonds). Also, the boiling point of liquid acetone is much lower than that of water, meaning that it has a higher vapor pressure than that of water.

Answer:

Single-replacement reaction

Explanation:

Single-replacement reactions, aka. single-displacement reactions, involve one element/ion in a compound being replaced by another element/ion. In this case, aluminum is replacing the iron in the compound.

If you need help visualizing, the equation looks like this:

Fe₂O₃ + Al³⁺ --> Al₂O₃ + Fe³⁺

Answer:

"1.4 mL" is the appropriate solution.

Explanation:

According to the question,

Now,

Increase in volume will be:

⇒ \(\Delta V = \alpha\times v_0\times \Delta \epsilon\)

By putting the given values, we get

           \(=1.12\times 10^{-4}\times 500\times 25\)

           \(=1.12\times 10^{-4}\times 12500\)

           \(=1.4 \ mL\)

Answer:

27.86x10^-3 Kg

Explanation:

Hi! To get the result you only need to use this formula: m = n x M <=> m = 1.070 x ((2x12.01 + 2x1.01) x 10^-3) = 27.8628 x 10^-3 Kg. Hope it helped!