Sugar is easily soluble in water and has a molar mass of 342.30 g/mol. What is the molar concentration of a 246.8 mL aqueous solution prepared with 72.1 g of sugar?

The amount of 0.303N NaOH needed to neutralize a 13.0 ml sample of acid is 37,3 ml. Acid is 0.823N normal, according to the standard.

The idea of neutralization, according to which an acid reacts with a base to create salt and water. By comparing the molarity of the base to the amount of base needed for neutralization, it is possible to calculate the molarity of the acid. Once the molarity and the acid's valence (or charge) have been multiplied, the acid's normalcy can be determined.

By deducting the volume of NaOH (37.3 ml) from the volume of the acid sample in Step 1, you can calculate the amount of acid that was utilized in the neutralization procedure (13.0 ml).

Consequently, 13.0 ml to 37.3 ml

= -24.3 ml

Use the equation moles = normality x volume to determine the number of moles of acid that were used in the process.

Consequently, moles equal 0.303N x -24.3 ml.

= -7.33 moles

Determine the acid's normality by multiplying the volume by the formula normalcy = moles.

As a result: normalcy = -7.33 moles / 13.0 ml

= -0.823N

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If you traded (converted) 15 Skittles for M&Ms, you will have 20 M&Ms

We'll begin by converting 15 Skittles to cookies. This can be obtained as follow:

6 Skittles = 4 Cookies

Therefore,

15 Skittles = (15 Skittles × 4 cookies) / 6 skittles

15 Skittles = 10 cookies

We can convert 10 cookies to M&Ms as follow:

1 Cookies = 2 M&Ms

Therefore,

10 cookies = (10 cookies × 2 M&Ms) / 1 Cookies

10 cookies = 20 M&Ms

Thus, 15 Skittles is equivalent to 20 M&Ms

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Answer:

D got it right

Explanation:

Answer:

The answer is d

Explanation:

God bless you have a great day

Answer:

Explanation:

N₂       + 3H₂     =     2 NH₃

1 vol                         2 vol

786 liters               1572 liters

786 liters of dinitrogen will result in the production of 1572 liters of ammonia

volume of ammonia V₁ = 1572 liters

temperature T₁ = 222 + 273 = 495 K

pressure = .35 atm

We shall find this volume at NTP

volume V₂ = ?

pressure = 1 atm

temperature T₂ = 273

\(\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}\)

\(\frac{.35\times 1572}{495} =\frac{1\times V_2}{ 273 }\)

\(V_2 =303.44\) liter .

mol weight of ammonia = 17

At NTP mass of 22.4 liter of ammonia will have mass of 17 gm

mass of 303.44 liter of ammonia will be equal to (303.44 x 17) / 22.4 gm

= 230.28 gm

=.23 kg / sec .

Rate of production of ammonia = .23 kg /s .

Answer:76 grams

Explanation:

Fe+H₂SO₄-->FeSO₄+H₂

For one mole of Fe we get 1 mole of feso4, therefore for 0.5 moles of Fe we get 0.5 moles of feso4.

The molar mass of feso4 is AFe+AS+4AO(A is atomic mass)

56+32+4*16=152grams/mole

Now, we need to multiply the number of moles by the molar mass to get the mass that reacts

152*0.5=76 grams

Answer: POH=8

Explanation:PH = -log( H+concentration)

PH = 6

POH = 14 - PH = 8

Answer:

\(\Delta P=4.10atm\)

Explanation:

Hello!

In this case, since the ideal gas equation is used under the assumption of no interaction between molecules and perfectly sphere-shaped molecules but the van der Waals equation actually includes those effects, we can compute each pressure as shown below, considering the temperature in kelvins (22.3+273.15=295.45K):

\(P^{ideal}=\frac{nRT}{V}=\frac{15.0mol*0.08206\frac{atm*L}{mol*K}*295.45K}{8.00L}=45.5atm\)

Next, since the VdW equation requires the molar volume, we proceed as shown below:

\(v=\frac{8.00L}{15.0mol}=0.533\frac{L}{mol}\)

Now, we use its definition:

\(P^{VdW}=\frac{RT}{v-b} -\frac{a}{v^2}\)

Thus, by plugging in we obtain:

\(P^{VdW}=\frac{0.08206\frac{atm*L}{mol*K}*295.45K}{0.533mol/L-0.0430L/mol} -\frac{2.300L^2*atm/mol^2}{(0.533L/mol)^2}\\\\P^{VdW}=49.44atm-8.09atm\\\\P^{VdW}=41.4atm\)

Thus, the pressure difference is:

\(\Delta P=45.5atm-41.4atm\\\\\Delta P=4.10atm\)

Best regards!

Answer:

a. True

Explanation:

There is strong inhibition of Carbon Anhydrase by Aceta-zolamide Carbonic Anhydrase. The drug acetazolamide is used as diuretic which increase the urine production in human body. It lowers pressure in eye in glaucoma.

Answer:

as when we add 60 ml it removes all the protons it means it is 2nd equivalence point of Ascorbic acid

and we know that pH = pKa1 when moles of NaOH is half of the 1st equivalence point

1st equivalence point = 2nd equivalence point / 2 = 60/2 =30ml

1st half equivalence point = 30/2 = 15ml

so when we add 15ml of NaOH

pH = pKa1 =15mL

Explanation:

You've not brought out the question

A methane molecule (CH4) is considered symmetrical because it possesses a symmetric structure and exhibits symmetry operations.

Symmetry refers to a balanced arrangement of elements that can be divided into equal parts by a plane, axis, or center. In the case of methane, it exhibits several symmetrical characteristics.

Firstly, methane has a tetrahedral molecular geometry, with the carbon atom at the center and four hydrogen atoms positioned around it. This geometry ensures that the molecule is symmetrical in terms of its spatial arrangement.

Each hydrogen atom is located at one of the vertices of the tetrahedron, forming equal angles and distances with respect to the central carbon atom. This symmetry is maintained regardless of the orientation of the molecule.

Additionally, methane possesses rotational symmetry. It can be rotated around any of the carbon-hydrogen bonds, and the molecule will retain its overall appearance.

The symmetry of methane arises from its molecular structure and the equal distribution of electron density around the central carbon atom. The four hydrogen atoms are bonded to the carbon through sigma bonds, which have a cylindrical symmetry. This balanced arrangement of the atoms contributes to the overall symmetry of the molecule.

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3.6 atm is the pressure inside the container after 243 mg of magnesium has reacted.

Pressure is defined as the force applied perpendicularly to an object's surface divided by the area over which that force is applied.

The reaction given is: Mg(s) + 2HCl(aq) → MgCl2(s) + H2(g). The moles of H2 gas formed are therefore equal to the moles of Mg that reacted, and can be calculated from: n = 0.243 g/(24.3 g/mol) = 0.01 moles (converting 243 mg to 0.243 g).

The added pressure is calculated by P = nRT/V using approximations: 0.08 L atm/molK for R (0.0821 rounded), 300K for T (303.15 before rounding) and 0.10 L for V.

Solving gives pressure = 2.4 atm. Finally, this number must be added to the initial pressure: 2.4 + 1.2 = 3.6 atm.

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The endothermic reaction PE diagram is characterized by higher energy products and lower energy reactants.

The Potential Energy (PE) diagram represents the potential energy of the reactants and products. The change in potential energy during a reaction is often an indicator of whether the reaction is endothermic or exothermic.Endothermic reactions are those that absorb energy from their surroundings, while exothermic reactions release energy into their surroundings. The potential energy diagram for an endothermic reaction is characterized by a higher energy of products than that of the reactants.In other words, the energy required to break the bonds in the reactants is less than the energy required to form bonds in the products. The reactants are at a lower energy level than the products on the potential energy curve. The graph of PE diagram for an endothermic reaction is as follows: Image depicting a PE diagram for an endothermic reaction. As a result, Option B represents a PE Diagram for an endothermic reaction.

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Answer:

a. The Zn and HCl both retained their identity.

Answer:

He proposed a model of the atom that consisted of a positively charged sphere with negatively charged electrons embedded in it. This model was later called the plum pudding model. Thomson’s discovery of the electron showed that atoms were not indivisible, as previously thought, but composed of smaller subatomic particles. His model also explained some phenomena such as cathode rays and electric currents. Thomson’s work helped advance our understanding of the structure and nature of the atom.

Explanation:

101 mmHg is the total pressure in the tank.

Thus, Dalton's Law of Partial Pressures states that while the volume and temperature of a gaseous mixture are held constant, the total pressure of the mixture is equal to the sum of the partial pressures of its gaseous components.

Nitrogen, oxygen, argon, carbon dioxide, water vapor, and a trace amount of other gases are all present in atmospheric air and pressure.

The increased oxygen content in the chamber can displace the CO bound to hemoglobin faster than air oxygen, hence the hyperbaric chambers are also used to treat carbon monoxide (CO) poisoning. The treatment of scuba divers with the bends is another application for hyperbaric chambers.

Thus, 101 mmHg is the total pressure in the tank.

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Answer:

Any device that contains electronic parts

Answer:

its sodium hydroxide

Explanation:

Answer:

i think it would be

Explanation:

What is the unit rate of the better deal? (Number answers only.)

LaTeX: \frac{160\:miles}{5\:gallons}\:or\:\frac{315\:miles}{9\:gallons}160 m i l e s 5 g a l l o n s o r 315 m i l e s 9 g a l l o n s

The better deal has a unit rate of [m] miles per gallon.

Answer:no

Explanation:

Answer:

Scandium is a transition metal

Explanation:

Answer: its 4xb236.52

Explanation:

Answer:

1. is Molar (with capital M)

2. is molal (m)

Explanation:

By definition, 1 Molar solutions have 1 mol of solute in 1 L of solution and 1 molal solutions have 1 mol of solute in 1 Kg of solvent

Answer:

its D

Explanation:

I took the test its right

The data can lead us to conclude that an alcohol thermometer can measure the freezing point of a liquid that freezes at −80 °C..

The liquid in glass thermometers are those thermometers whose thermometric substance is a liquid. Usually the best liquids to be used are those that have a long liquid range.

The data can lead us to conclude that an alcohol thermometer can measure the freezing point of a liquid that freezes at −80 °C..

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Answer:

This might be simply as matter of convenience. It is now well known that different molecules have one of several smells. The sensation of smell is produced when the odor-causing molecule binds to certain sites (called receptors) high up in the nose.

Answer:

0.606 g of KNO₃.

Explanation:

We'll begin by converting 300 mL to L. This can be obtained as follow:

1000 mL = 1 L

Therefore,

300 mL = 300 mL × 1 L / 1000 mL

300 mL = 0.3 L

Next, we shall determine the number of mole of KNO₃ in the solution. This can be obtained as follow:

Volume = 0.3 L

Molarity of KNO₃ = 0.020 M

Mole of KNO₃ =?

Mole = Molarity x Volume

Mole of KNO₃ = 0.020 × 0.3

Mole of KNO₃ = 0.006 mole.

Finally, we shall determine the mass of 0.006 mole of KNO₃. This can be obtained as follow:

Mole of KNO₃ = 0.006 mole.

Molar mass of KNO₃ = 39 + 14 + (16×3)

= 39 + 14 + 48

= 101 g/mol

Mass of KNO₃ =?

Mass = mole × molar mass

Mass of KNO₃ = 0.006 × 101

Mass of KNO₃ = 0.606 g

Thus, 0.606 g of KNO₃ is needed to prepare the solution.