Which image represents ether? Check all that apply.

Explanation:

Intermolecular forces hold multiple molecules together and determine many of a substance's properties. All of the attractive forces between neutral atoms and molecules are known as van der Waals forces, although they are usually referred to more informally as intermolecular attraction.

Intermolecular forces are the forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions ). These forces are weak compared to the intramolecular forces, such as the covalent or ionic bonds between atoms in a molecule.

Given :

For a chemical reaction, the activation energy for the forward reaction is +181 kJ and the activation energy for the backward reaction is +62 kJ.

To Find :

The overall energy change for the forward reaction.

Solution :

The overall energy change for the forward reaction is :

[tex]\Delta E_f = E_f - E_b\\\\\Delta E_f = 181 - 62 \ Kj\\\\\Delta E_f = 119 \ Kj[/tex]

Therefore, the overall energy change for the forward reaction is 119 Kj.

Answer:

Gravity and Inertia

Explanation:

Just did it on edg 2021 :)

Answer:

a top predator, fighting

Answer:

Explanation:

The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms.

Answer: ar

Explanation:

Answer:

konduktor

- ang konduktor ay maaaring isang konduktor nga koryente, train o isang taong namumuno sa isang orkestra o isang grupo ng mga mang-aawit.

piloto

-isang tao na tagalipad ng ereplano

drayber

- isang tao na nagmamaniho ng sasakyan

makinista

-ay isang tao na nagpapakilos o nagpapagana ng makina

please give me brainliest.

Answer:

25.42 grams

Explanation:

The specific heat of water is 4.18 J/g •°C, so that means that it takes 4.18 joules of energy to raise one gram of water 1 °C.

Change in temp = 55 - 15 = 40°C

So we can calculate how much energy it would take to raise the temp of one gram of water by one degree using the following

(4.18 J/g•°C) * (40°C) * (1 gram) = 167.2 J

So if it takes 167.2 J of energy to raise on gram of water 40°C, we now we can calculate the amount of grams of water that can heated with 4250 J of energy

(4250 J) ÷ (167.2 J) = 25.42 grams of water can be heated from 15°C to 55°C

65.38 u (or g)

I just searched it up

Answer:

₰₮₤₳V₤

Explanation:

First you must calculate the number of moles in this solution, by rearranging the equation. No. Moles (mol) = Molarity (M) x Volume (L) = 0.5 x 2. = 1 mol.

For NaCl, the molar mass is 58.44 g/mol. Now we can use the rearranged equation. Mass (g) = No. Moles (mol) x Molar Mass (g/mol) = 1 x 58.44. = 58.44 g.

Answer:

https://www.chegg.com/homework-help/questions-and-answers/1-10-points-solution-15-percent-mass-kcl-benzene-new-boiling-point--901-c-b-921-c-c-821-c--q63751186

Explanation: Thats your answer

Answer:

A-Sphalerite + Dioxygen+Zinc Oxide+Sulfur Trioxide

B-Sodium+Magnesium+Sodium iodide

Explanation:

Heyyy love good luck i may be wrong on letter B so if it is thats my bad but A should be correct :)

Answer:

4 Hydrogen atoms

Answer:

1. The gas law used: Dalton's law of partial pressure.

2. Pressure of nitrogen = 331 mmHg

Explanation:

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

Total pressure (Pₜ) = 592 mmHg

Pressure of Oxygen (Pₒ) = 261 mmHg

Pressure of nitrogen (Pₙ) =?

The pressure of nitrogen in the sample can be obtained by using the Dalton's law of partial pressure. This is illustrated below:

Pₜ = Pₒ + Pₙ

592 = 261 + Pₙ

Collect like terms

592 – 261 = Pₙ

331 = Pₙ

Pₙ = 331 mmHg

Therefore, the pressure of nitrogen in the sample is 331 mmHg

Answer:

C

Explanation:

A-T G-C

Answer:

C

Explanation:

EDGE 2022

Answer:

V₂ = 4.00 L

Explanation:

Given that:

Volume (v1) = 6.00 L

Temperature (T1) = 300 K

Pressure (P1) = 1.00 atm

VOlume (V2) = unknown???

Temperature (T2) = 600 K

Pressure (P2) = 3.00 atm

Using combined gas law equation:

[tex]\dfrac{P_1V_1}{T_1}= \dfrac{P_2V_2}{T_2}[/tex]

[tex]\dfrac{1 \times 6}{300} = \dfrac{3 \times V_2}{600}[/tex]

[tex]\dfrac{1}{50} = \dfrac{1 \times V_2}{200}[/tex]

200 = 50V₂

V₂ = 200/50

V₂ = 4.00 L

Answer: The mass in grams of potassium chloride required to prepare this solution is 1.862 grams

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]

where,

n = moles of solute

[tex]V_s[/tex] = volume of solution in ml

moles of [tex]KCl[/tex] = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{xg}{74.5g/mol}[/tex]

Now put all the given values in the formula of molality, we get

[tex]0.100=\frac{x\times 1000}{74.5g/mol\times 250.0ml}[/tex]

[tex]x=1.862g[/tex]

Therefore, the mass in grams of potassium chloride required to prepare this solution is 1.862 grams

Answer:

1. [H⁺] = 2.0×10¯¹¹ M

2. [OH¯] = 4.8×10¯⁴ M

3. pOH = 3.3

4. pH = 10.7

Explanation:

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

Molarity of Ca(OH)₂ = 0.00024 M

We'll begin by calculating the concentration of the hydroxide ion [OH¯]. This can be obtained as follow:

Ca(OH)₂ (aq) —> Ca²⁺ + 2OH¯

From the balanced equation above,

1 mole of Ca(OH)₂ produced 2 moles of OH¯.

Therefore, 0.00024 M Ca(OH)₂ will produce = 2 × 0.00024 = 4.8×10¯⁴ M OH¯

Thus, the concentration of the hydroxide ion [OH¯] is 4.8×10¯⁴ M

Next, we shall determine the pOH of the solution. This can be obtained as follow:

Concentration of the hydroxide ion [OH¯] = 4.8×10¯⁴ M

pOH =?

pOH = –Log [OH¯]

pOH = –Log 4.8×10¯⁴

pOH = 3.3

Next, we shall determine the pH of the solution. This can be obtained as follow:

pOH = 3.3

pH =?

pH + pOH = 14

pH + 3.3 = 14

Collect like terms

pH = 14 – 3.3

pH = 10.7

Finally, we shall determine the concentration of hydrogen ion [H⁺]. This can be obtained as follow:

pH = 10.7

Concentration of hydrogen ion [H⁺] =?

pH = –Log [H⁺]

10.7 = –Log [H⁺]

Divide both side by –1

–10.7 = Log [H⁺]

Take the antilog of –10.7

[H⁺] = Antilog (–10.7)

[H⁺] = 2.0×10¯¹¹ M

SUMMARY:

1. [H⁺] = 2.0×10¯¹¹ M

2. [OH¯] = 4.8×10¯⁴ M

3. pOH = 3.3

4. pH = 10.7

While recording the crime scene, the photographer snapped a picture of his partner posing beside the famous victim's body. After printing the photo for his partner, he should just delete the image so nobody gets in trouble is false.

Photographer is defined as a specialist who concentrates on the craft of shooting pictures with a digital or film camera. We can now describe the present, visualize the future, and visualize the history thanks to photography. The predecessor to the contemporary digital camera was the camera obscura. In the past, paintings were the most popular medium for capturing important historical events.

An approach known as "painting with light" is frequently used by seasoned photographers to expose image details in dim or near-dark lighting. By holding the shutter open for a few seconds or minutes while moving around the scene, the photographer can add light from sources like a flashlight or a flash from a separate camera.

The photographer's partner was photographed posing next to the body of the well-known victim as he documented the murder scene. It is erroneous to say that after printing the photo for his spouse, he should immediately erase it.

To learn more about photographer, refer to the link below:

https://brainly.com/question/25379778

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Answer: A chemical change occurs when the substance's composition is changed. When bonds are broken and new ones are formed a chemical change occurs.

Answer:

See Explanation

Explanation:

The kinetic energy of gas molecules is related to the temperature of the gas because temperature is a measure of the average kinetic energy of the molecules of a gas hence the lower the temperature of the gas the lower the average kinetic energy of the molecules of the gas.

The volume of a given mass of gas is directly proportional its absolute temperature(Charles's law). Hence, as the temperature of the gas gas decreases, the gas volume also decreases.

The number of gas molecules is totally independent of the temperature of the gas hence it stays the same.

As the temperature decreases, the number of collision of gas particles decreases as the kinetic energy of the gas particles decreases.

The pressure of a given mass of gas is related to the movement of gas particles. Hence, the lower the temperature the lower the pressure of the gas. Pressure and temperature are directly related hence pressure decreases as temperature decreases.

Answer: False, I think...

Explanation:

Answer:

True

Explanation:

It is uncontrolled

Answer:

AFAIK

Explanation:

uric acid is much less toxic than ammonia, hence bigger concentrations of it are tolerated in the body. This means you can excrete it while excreting very little water - beneficial wherever water's not abundant.

There's a tradeoff though, uric acid requires more energy to synthesize than ammonia, so pretty much all fish, say, excrete ammonia rather than uric acid - it's no problem to dilute ammonia since there's no water shortage.

Answer: Anode: [tex]Pb+SO_4^{2-}\rightarrow PbSO_4+2e^-[/tex]

Cathode: [tex]PbO_2+4H^++SO_4^{2-}+2e^-\rightarrow PbSO_4+2H_2O[/tex]

Overall cell reaction : [tex]Pb+2SO_4^{2-}+PbO_2+4H^+\rightarrow 2PbSO_4+2H_2O[/tex]

Explanation:

Lead storage battery is a secondary cell used in automobiles and invertors. The anode is made up of lead and undergoes oxidation during discharging and cathode is made up of lead oxide and acts as cathode during discharging. The electrolyte used is dilute .

Lead storage battery acts as electrochemical cell while discharging.

Discharging reaction for  Anode:

Discharging reaction for  Cathode: [tex]PbO_2+4H^++SO_4^{2-}+2e^-\rightarrow PbSO_4+2H_2O[/tex]

Overall cell reaction : [tex]Pb+2SO_4^{2-}+PbO_2+4H^+\rightarrow 2PbSO_4+2H_2O[/tex]

A lead storage battery is an energy storage device. At the anode lead and sulfate ion reacts to produce Lead(II) sulfate and release two electrons.

In secondary cells or the recharge-discharge cells during recharge, the positive electrode is the anode, while during discharge cathode is the positive electrode.

The anode (lead) of the cell undergoes an oxidation reaction during the discharge, whereas the lead oxide or the cathode undergoes reduction.

The discharging reaction at the anode of the cell is given as,

[tex]\rm Pb + SO_{4}^{2-} \rightarrow PbSO_{4} + 2e^{-}[/tex]

The discharging reaction at the cathode of the cell is given as,

[tex]\rm PbO_{2} + 4H^{+} + SO_{4}^{2-} + 2 e^{-} \rightarrow PbSO_{4} + 2H_{2}O[/tex]

The overall cell reaction is given as,

[tex]\rm Pb + 2SO_{4}^{2-} + PbO_{2} + 4H^{+} \rightarrow 2PbSO_{4} + 2H_{2}O[/tex]

Therefore, the gain and loss of electrons are represented at the cathode and the anode of the cell.

Learn more about discharge battery here:

https://brainly.com/question/8341588

Answer:

50%

Explanation:

35.0g/70.0g×100%

=50%

The Promotion of Equality and Prevention of Unfair Discrimination Act, (PEPUDA or Equality Act, 4 of 2000

Explanation:

Xenophobia is known as the dislike for the people from other countries.

the law, prevents and prohibits discrimination and harrasment

Answer:

The heat of reaction is the energy that is released or absorbed when chemicals are transformed in a chemical reaction. It describes the change of the energy content when reactants are converted into products.

Explanation:

Yeah, that would confuse me a bit but then you read it and then you will get that answer above! Have a great rest of your day!