Which of these are enantiomers? There should be two.

Answer:

The answer is "Option B".

Explanation:

[tex]\to CH_3COOH + NaOH \longleftrightarrow CH_3COONa + H_2O\\\\\to CH_3COONa + NaOH\longleftrightarrow CH3COONa\\\\\therefore \ mol\ NaOH = (5 \ E-3\ L)\times(0.10 \ \frac{mol}{L}) = 5 \ E-4\ mol\\\\[/tex]

[tex]\to mol\ CH_3COOH = (0.05 \ L)\times(0.20 \frac{mol}{L}) = 0.01 \ mol\\\\\to C \ CH_3COOH = \frac{(0.01 \ mol - 5 \ E-4\ mol) }{(0.105 \ L)}\\\\\to C \ CH_3COOH = 0.0905 \ M\\\\\therefore \ mol \ CH_3COONa = (0.05\ L )\times (0.20 \ \frac{mol}{L}) = 0.01 \ mol\\\\[/tex]

[tex]\to C \ CH_3COONa = \frac{(0.01\ mol + 5 \ E-4\ mol)}{(0.105\ L )}\\\\\to C \ CH_3COONa = 0.1 \ M\\\\\therefore Ka = ([H_3O^{+}]\times \frac{(0.1 + [H_3O^+]))}{(0.0905 - [H_3O^+])} = 1.75\ E-5\\\\\to 0.1[H_3O^+] + [H_3O^+]^2 = (1.75 E-5)\times (0.0905 - [H_3O^+])\\\\[/tex]

[tex]\to [H_3O^+]^2 \ 0.1[H_3O^+] = 1.584\ E-6 - 1.75\ E-5[H_3O^+]\\\\\to [H_3O^+]^2 + 0.1000175[H_3O^+] - 1.584 \ E-6 = 0\\\\\to [H_3O^+] = 1.5835\ E-5 \ M\\\\\therefore pH = - \log [H_3O^+]\\\\\to pH = - \log (1.5835 \ E-5)\\\\ \to pH = 4.8004 > 4.7[/tex]

Answer:

Explanation:

You actually are being pulled towards everything and everything is being pulled towards you.  Everything exerts a gravitational force, but our force and the force of the objects around us is not strong enough to actually move objects

Answer:

2.54 L

Explanation:

Step 1: Write the balanced neutralization equation

6 HCl + Fe₂O₃ → 3 H₂O + 2 FeCl₃

Step 2: Calculate the moles corresponding to 339 g of Fe₂O₃

The molar mass of Fe₂O₃ is 159.69 g/mol.

339 g × 1 mol/159.69 g = 2.12 mol

Step 3: Calculate the moles of HCl that react with 2.12 moles of Fe₂O₃

The molar ratio of HCl to Fe₂O₃ is 6:1. The reacting moles of HCl are 6/1 × 2.12 mol = 12.7 mol

Step 4: Calculate the volume of HCl

12.7 moles are in 5.00 M (5.00 mol/L) HCl. The required volume is:

12.7 mol × 1 L/5.00 mol = 2.54 L

Answer:

See explanation

Explanation:

In the voltaic cell, energy is produced by spontaneous chemical reaction. One half cell functions as the anode (in this case it is the Fe/Fe^2+ half cell) while the other half cell functions as the cathode (in this case it is the the Ag/Ag^+ half cell).

At the anode;

Fe(s) -----> Fe^2+(aq) + 2e

At the anode;

2Ag^+(aq) + 2e ------> 2 Ag(s)

Overall cell equation;

Fe(s) + 2Ag^+(aq)  ------> Fe^2+(aq) + 2 Ag(s)

.ANSWER:Copper is a ductile metal

EXPLAIN :This means that it can easily be shaped into pipes and drawn into wires. Copper pipes are lightweight because they can have thin walls. They don't corrode and they can be bent to fit around corners.

Copper is a ductile metal due to ductility.This means that it can easily be shaped into pipes and drawn into wires. Copper pipes are lightweight because they can have thin walls.

Ductility is a mechanical property commonly described as a material's amenability to drawing (e.g. into wire).In materials science, ductility is defined by the degree to which a material can sustain plastic deformation under tensile stress before failure. Ductility is an important consideration in engineering and manufacturing. It defines a material's suitability for certain manufacturing operations (such as cold working) and its capacity to absorb mechanical overload.

Some metals that are generally described as ductile include gold and copper, while platinum is the most ductile of all metals in pure form.However, not all metals experience ductile failure as some can be characterized with brittle failure like cast iron. Polymers generally can be viewed as ductile materials as they typically allow for plastic deformation.

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Answer:

a mole is the number of molecules in 22.4 dm³ for all gases at all temperatures and pressures

Answer:

Sodium citrate is a compound with a total of 21 atoms

4.4 g XY

I'm not sure but that's the closest I can get or try

Answer:

Radiant; electromagnetic; kinetic energy.

Explanation:

Energy can be defined as the ability (capacity) to do work. The various forms of energy are solar energy, electrical energy, chemical energy, thermal energy, wind energy, nuclear energy etc.

The two (2) main types of energy are;

a. Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.

b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.

Light and radio are examples of the radiant or electromagnetic energy form, which is kinetic energy because it is always moving.

Kinetic energy can be defined as an energy possessed by an object or body due to its motion.

Mathematically, kinetic energy is given by the formula;

[tex] K.E = \frac{1}{2}MV^{2}[/tex]

Where;

K.E represents kinetic energy measured in Joules.

M represents mass measured in kilograms.

V represents velocity measured in metres per seconds square.

Answer: 1+charge

Explanation: hoped this helped:)

Answer:

29% is the final concentration

Explanation:

To solve this question we must find the volume of ethanol added and the volume of the whole solution. The concentration will be:

Volume ethanol / Total volume * 100

Volume ethanol:

10mL * 70% = 7mL ethanol

+

20mL * 80% = 16mL ethanol

= 23mL ethanol

Total volume:

10mL + 20mL + 50mL = 80mL

Concentration:

23mL / 80mL * 100

= 29% is the final concentration

The pH would be 3.16 because the formula for finding the pH from a H± ion is pH = -log [H±]

So with that formula, you first have to substitute the H± with your numbers which in this case is 6.9 × 10^-4.

It should like this:

pH = -log (6.9 × 10^-4)

And lastly, just calculate.

pH = 3.16

Hope that helps, do let me know if you need more help in understanding this!

Answer:

627.4 mmHg

Explanation:

From Gay-Lussac law:

[tex] \frac{p1}{t1} = \frac{p2}{t2} [/tex]

p1 = 760 mmHg

t1 = 343 K

t2=283.15 K

[tex]p2 = p1 \times \frac{t2}{t1} [/tex]

[tex]p2 = 760 \times \frac{283.15}{343.0} [/tex]

[tex]p2 = 627.4 \: mmhg[/tex]

If a gas is cooled from 343.0 K to 283.14 K and the volume is kept constant the final pressure would be 627.4 mm Hg if the original pressure was 760.0 mm Hg.

Gay-Lussac's law states that the pressure of a given mass of gas at a constant volume varies directly with the temperature of the gas.  Gay-Lussac's law defined the relationship between pressure and temperature of a gas when kept at a constant volume.

P ∝ T       (When V = constant)

or, P = kT

or, [tex]\frac{P_1}{T_1} = \frac{P_2}{T_2}[/tex]

Here,

[tex]P_{1}[/tex] = 760.0 mm Hg,

[tex]T_{1}[/tex]= 343.0 K

[tex]T_{2}[/tex] = 283.15 K

Now put the values in above formula, we get

[tex]\frac{P_1}{T_1} = \frac{P_2}{T_2}[/tex]

[tex]\frac{760.0\ \text{mm Hg}}{343.0K} = \frac{P_2}{283.15\ K}[/tex]

[tex]P_{2} = \frac{760.0\ \text{mm Hg} \times 283.15\ K}{343.0\ K}[/tex]

[tex]P_{2} = \frac{215194\ \text{mm Hg}}{343}[/tex]

[tex]P_{2}[/tex] = 627.4 mm Hg

Thus, we can say that if a gas is cooled from 343.0 K to 283.14 K and the volume is kept constant the final pressure would be 627.4 mm Hg if the original pressure was 760.0 mm Hg.

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Answer:

C???

Explanation:

Answer: potassium and sodium have similar properties

Explanation: Na and K belong to alkali metals. Both have one electron in outer shell. Calcium has two electrons in outer shell.

Answer:

(CH3)2CHCH2COCH3

Explanation:

As the chemical reaction proceeds, a gas is formed with the water molecule and CH₃COONa, so the mass of the remaining solid product is less than 345 g.

Stoichiometry tells about the relative amount of reactants and products before and after the reaction in terms of coefficient.

Given chemical reaction is:

NaHCO₃ + CH₃COOH → CH₃COONa + CO₂ + H₂O

From the stoichiometry of the reaction it is clear that 1 mole of both the reactants will form products. And for the formation of product amounts of the reactants get wholly consumed. From 345 grams of reactants carbon dioxide gas, water and sodium acetate salt is formed, so the mass of this formed salt is less than 345 grams.

Hence, option (C) is correct i.e. less that 345g.

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Answer:

A solution of sugar that contains the maximum amount of sugar that will dissolve is a saturated solution.

Explanation:

A saturated solution is a solution that contains as much solute as can dissolve in a given solvent at a given temperature.

for you the solute is sugar

Answer:

3.68 g

Explanation:

[tex]n_{CO2}[/tex] = 18 ÷ 44 = 0.4

2C2H2 + 5O2 → 4CO2 + 2H2O

   2       :    5      :    4      :    2  

                             0.409                 (moles)

⇒ [tex]n_{H2O}[/tex] = 0.409 × 2 ÷ 4 = 0.2045 moles

⇒ [tex]m_{H2O}[/tex] = 0.2045 × 18 = 3.68 grams

Answer:

Explanation:

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Answer:

mixtures are physically combined structures that are separated into their original components. A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.

Explain:

yw

ask your mom and your family

Answer:

An ignition coil can fail due to a high voltage puncture of its body, or an open primary or secondary winding. A few are killed by overheating when the control side of the primary side develops a short to ground. Something as simple as badly worn spark plugs will increase the demand from the coil, and eventually lead to failure.

But if I were to discuss the current leading cause of ignition coil replacement, I would have to say misdiagnosis and bad internet information. This is especially true of modern “coil on plug” systems. Often, the actual coil is fine, and the only damage is the replaceable spark plug boot.

I've seen countless examples of online “advice” to start with replacing all spark plugs and coils at the suggestion of any power loss or hiccup. Then the car owner purchases the cheapest set of coils that they can find. Not only is the initial problem still present , but they likely WILL have a future misfire due to poor quality parts selection. All misfires are not caused by coils and spark plugs.

Explanation:

Answer:

Spiral galaxies

Explanation:

Answer:

Kc = 0.5951 (4 sig. figs.)

Explanation:

For A + B ⇄ C + D at standard thermodynamic conditions (298K, 1atm)

ΔG = ΔG° + R·T·lnQ => 0 = ΔG° + R·T·lnKc => ΔG° = - R·T·lnKc

=> lnKc = - ΔG°/R·T

ΔG° = +12.86 Kj/mol

R = 8.314 Kj/mol·K

T = 298K

lnKc = - (+12.86Kj) / (8.314Kj/mol·K)(298K) = - 0.519 mol⁻¹

Kc = e⁻⁰°⁵¹⁹ mol⁻¹ = 0.5957 mol⁻¹ (4 sig. figs.)

Answer:

C. Solution B is less acidic than solution A.

Answer:

5.6 m/s

Explanation:

Given,

First number = 13.254 m/s

Second number = 7.7 m/s

We need to find the difference between these two numbers. First we round off 13.254 to one decimal place i.e. 13.254 = 13.3 m/s

The difference between them is given by :

D = 13.3 - 7.7

= 5.6 m/s

Hence, the difference of the two numbers is 5.6 m/s.

Answer:

Think of it this way If you have a phosphorus atom whats its oposites once you found that out you may be able to find the answer

Explanation:

Hope this helps :)

the answer is 133

because thats how the water is