Select all of the following that are true about your Zn-Ag cell.

a. Ag is gaining electrons. Zn is getting oxidized.
b. Electrons travel toward the Ag half-cell.
c. Ag is getting reduced.
d. Electrons travel away from the Zn half-cell.
e. Zn is losing electrons. Zn2 is gaining electrons.
f. Ag is getting oxidized. Electrons travel toward the Zn half-cell.
g. Electrons travel away from the Ag half-cell. Zn2 is getting reduced.
h. Ag is losing electrons. Incorrect: Your answer is incorrect.

Answer:

0.200 M

Explanation:

Begin by finding how many moles of KCl there are by using the molarity and given volume:

[tex]\frac{0.600 mol}{1000 mL} x \frac{200.0 mL}{1} = 0.12 mol KCl[/tex]

(Remember that molarity is mol/L, which is equal to mol/1000 mL.)

Next, divide the moles of KCl by the new volume (after dilution):

[tex]\frac{0.12 mol KCl}{600.0 mL} x \frac{1000 mL}{1 L} = \frac{0.200 mol KCl}{1 L} = 0.200 M[/tex]

The new concentration is 0.200 M.

The new concentration of the KCL solution is 0.200M

HOW TO CALCULATE CONCENTRATION:

C1V1 = C2V2

Where;

C1 = initial concentration of the solution

C2 = final concentration of the solution

V1 = initial volume of the solution

V2 = final volume of the solution

V1 = 200mL

V2 = 600mL

C1 = 0.600 M

C2 = ?

C2 = C1V1 ÷ V2

C2 = (0.600 × 200) ÷ 600

C2 = 120 ÷ 600

C2 = 0.2M

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Yes. Light from the sun can pull energy out of the ink, causing it to become visible

___________________________________

Sorry if wrong

I think it's ethane. It might be wrong tho.

Answer:

1/2

Explanation:

Half of 6 is 3 so therefore it is a half.

The colors used to indicate the change in average temperature over time from 1884 to 2012 can vary depending on the specific visualization or representation being used.  However, in many temperature visualizations, a common color scheme is employed to represent temperature anomalies or changes relative to a reference period.

In this color scheme, cooler temperatures are often represented by shades of blue or green, while warmer temperatures are depicted by shades of yellow, orange, or red. The intensity or darkness of the colors may also correspond to the magnitude of the temperature change.

For example, if a visualization shows a map with regions colored in blue or green, it suggests that those areas experienced a cooling trend or had lower average temperatures during the specified time period. Conversely, if the map shows regions colored in yellow, orange, or red, it indicates a warming trend or higher average temperatures.

By examining the distribution of colors on the visualization, one can gain insights into the spatial patterns and changes in average temperatures over the specified time frame.

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Answer:

three reasons

Explanation:

plasma membrane, cytoplasm, nucleus 2)The three main components of the lipid bilayer portion of a plasma membrane are phospholipids, cholesterol, and glycolipids.

Answer: D. form cations.

I think

Explanation:

0.25 mole of hydrogen contains 1.5 * 10^23 molecules  of hydrogen gas.

We have to know that the number of molecules in one mole of a substance is obtained from the Avogadro's number.

We know that;

1 mole of hydrogen contains 6.02 × 10^23 molecules of hydrogen

0.25 mole of hydrogen contains 0.25 mole × 6.02 × 10^23 molecules/1 mole

= 1.5 * 10^23 molecules

Therefore, 0.25 mole of hydrogen contains 1.5 * 10^23 molecules  of hydrogen gas.

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Answer:

Option D. 3 ppm isopropanol

Explanation:

The following data were obtained from the question:

Mass of isopropanol = 6 mg

Mass of water = 2 Kg

Isopropanol concentration =?

The isopropanol concentration can be obtained as follow:

Concentration = mass isopropanol / mass of water

Isopropanol concentration = 6 mg / 2 kg

Isopropanol concentration = 3 mg/Kg

Finally, we shall convert 3 mg/Kg to ppm. This can be obtained as follow:

1 mg/Kg = 1 ppm

Therefore,

3 mg/Kg = 3 ppm

Thus, we can conclude that the concentration of isopropanol is 3 ppm.

Answer:

yes

Explanation:

it is

Answer:

A. It denatures and coagulates during cooking.

(Photo for proof at the bottom.)

Explanation:

All proteins coagulate by heat. Its natural characteristics disappear, or denatures, when cooked. Heat causes proteins to vibrate, and breaks bonds that hold the complex shape of the proteins. These broken strands of protein then stick together. In basic terms, the structure of protein changes when cooked.

Here's a photo of Edge incase you're doubtful.

Please click the heart if this helped.

Answer:

A

Explanation:

EDGE 2022

Answer:

[IBr] = 0.049 M.

Explanation:

Hello there!

In this case, according to the balanced chemical reaction:

[tex]I_2+Br_2\rightarrow 2IBr[/tex]

It is possible to set up the following equilibrium expression:

[tex]K=\frac{[IBr]^2}{[I_2][Br_2]} =0.0110[/tex]

Whereas the the initial concentrations of both iodine and bromine are 0.50 M; and in terms of [tex]x[/tex] (reaction extent) would be:

[tex]0.0110=\frac{(2x)^2}{(0.50-x)^2}[/tex]

Which can be solved for [tex]x[/tex] to obtain two possible results:

[tex]x_1=-0.0277M\\\\x_2=0.0245M[/tex]

Whereas the correct result is 0.0245 M since negative results does not make any sense. Thus, the concentration of the product turns out:

[tex][IBr]=2x=2*0.0249M=0.049M[/tex]

Regards!

Answer:

See explanation

Explanation:

Electron affinity is the energy released when an extra electron is added to a neutral gaseous atom. A negative value of electron affinity indicates that energy is given out and vice versa.

Metals have positive electron affinity since electrons rarely accept electrons, so;

Na(g)+ 1e^- → Na^-(g)      positive

Mg(g)+1e^- → Mg^-(g)      positive

For the last case; Br(g)+ 1e^- → Br^-(g), the electron affinity for the non-metals is negative. hence the answer

Answer:

water - Yes because the do drink water

Air - yes they need to breath or alse they would not do good

warmth - yes or they die from coldness

Light - yes to get there food

soil - yes nution for there roots

Explanation:

Hopes it helps

Answer:

Explanation:

The molecular formula for Guanylate is [tex]\mathbf{C_{10} H_{14} N_5O_8 P}[/tex]

This is calculated by the addition of the atomic weight of all the atoms taking part in the molecule.

i.e. (10 × C) +  (14 × H) + (5 × N) + ( 8 × O) + (1 × P)

= (10 × 12) +  (14 × 1) + (5 × 14) + ( 8 × 16) + (1 × 30)

= 120 + 14 + 70 + 128 + 30

= 362 g/mol

The diagram for the tautomers of hypoxanthine can be seen in the image attached below.

Dihydrouridine is available and can be seen in tRNAs and rRNAs. It is an exceptionally preserved and adjusted base. It is a pyrimidine nucleoside that is shaped by the expansion of two hydrogen atoms to uridine. By the expansion of two hydrogen atoms to uridine makes it completely soaked and no presence of any two-fold or double bond.  

Catalytic reduction of carbon-carbon double bonds in Dihydrouridine synthase occurs at positions 5 and 6 on the uridine base.  

Hence, 5 and 6 carbon particles inside the uracil moiety of this nucleotide have two hydrogens each connected to them.

Answer:

hi

Explanation:

than you for points and thank me if you like

Answer:

a) 0.714g of bicarbonate of soda are required.

b) 0.221g of Al(OH)₃ are required

Explanation:

The reactions of HCl with bicarbonate of soda and aluminium hydroxide are:

HCl + NaHCO₃ → H₂O + NaCl + CO₂

3 HCl + Al(OH)₃ → 3H₂O + AlCl₃

The moles of HCl that we need neutralize are:

50mL = 0.050L * (0.17mol / L) = 0.0085 moles HCl

To solve these problem we need to find the moles of the antacid using the chemical reaction and its mass using its molar mass;

a) Moles NaHCO₃ = Moles HCl = 0.0085 moles

The mass is -Molar mass NaHCO₃: -84g/mol-

0.0085 moles * (84g / mol) = 0.714g of bicarbonate of soda are required

b) 0.0085 moles HCl * (1mol Al(OH)₃ / 3mol HCl) = 2.83x10⁻³ moles Al(OH)₃

The mass is -Molar mass: 78g/mol-:

2.83x10⁻³ moles Al(OH)₃ * (78g/mol) =

Answer: unlike, will not scatter

Explanation:

Colloids are unlike solutions because their dispersed particles are much larger than those of a solution. The dispersed particles of a colloid cannot be separated by filtration, but they scatter light, a phenomenon called the Tyndall effect.

Answer:

Given:

Compound C8H18

mass of compound- 546.23 gram

To find:

number of moles =?

Solution:

let's find out the molar mass of C8H18= 12×8+18×1 = 114 gram/mole

Number of moles= given mass/molar mass

=546.23/114

= 4.7818436487 moles.

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Answer:

A. It is exothermic

Explanation:

This reaction of acid and base represents synthesis reaction because new subsatnces are produced.

Synthesis reactions are reactions that occur when two different atoms combines to form a different molecule. A synthesis reaction can be represented by the equation i.e. A + B → C. In this equation, the A and B represent the reactants whereas the C represents the product.

So we can conclude that option C is the correct answer which is the synthesis reaction.

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Answer:

letter C I'm not sure to my answer but hope it can hrlp

The reason why magnesium hydroxide is  less basic than a saturated solution of potassium hydroxide is that magnesium hydroxide is less soluble than potassium hydroxide.

A saturated solution is one that contains as much solute as it can normally hold at a particular temperature.

We know that magnesium hydroxide is less soluble than potassium hydroxide. Hence, the reason why magnesium hydroxide is  less basic than a saturated solution of potassium hydroxide is that magnesium hydroxide is less soluble than potassium hydroxide.

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Answer:

[tex]T_{EQ}=42.1\°C[/tex]

Explanation:

Hello there!

In this case, since we are looking for an equilibrium temperature, we can evidence how the net heat flow is 0 as all the heat released by the hot brass is absorbed by the water:

[tex]Q_{brass}+Q_{water}=0[/tex]

Thus, by writing that equation in terms of mass, specific heat and temperature we obtain:

[tex]m_{brass}C_{brass}(T_{EQ}-T_{brass})+m_{water}C_{water}(T_{EQ}-T_{water})=0[/tex]

Thus, by applying the following algebra, it is possible to arrive to a clean expression to obtain the equilibrium temperature:

[tex]m_{brass}C_{brass}T_{EQ}+m_{water}C_{water}T_{EQ}=m_{water}C_{water}T_{water}+m_{brass}C_{brass}T_{brass}\\\\T_{EQ}(m_{brass}C_{brass}+m_{water}C_{water})=m_{water}C_{water}T_{water}+m_{brass}C_{brass}T_{brass}\\\\T_{EQ}=}\frac{m_{water}C_{water}T_{water}+m_{brass}C_{brass}T_{brass}}{m_{brass}C_{brass}+m_{water}C_{water}}[/tex]

Then, by plugging the masses, specific heats and initial temperatures in, we obtain:

[tex]T_{EQ}=\frac{130g*4.184\frac{J}{g*\°C} *35.0\°C+130g*0.380\frac{J}{g*\°C}*120.0\°C}{130g*4.184\frac{J}{g*\°C} +130g*0.380\frac{J}{g*\°C}}\\\\T_{EQ}=42.1\°C[/tex]

Best regards!

Answer:

no equivalent peak, upfield between 0 and 3 ppm

Explanation:

NMR stands for nuclear magnetic resonance. It is a spectroscopic technique that is used for observing the local magnetic fields around an atomic nuclei. It is used to study the chemical, physical and biological properties of the matter.

In the context, the structures of the benzaldehyde and the benzyl alcohol are distinguished by the proton NMR. The hydrogen atom of aldehyde appears downfield between 9 and 11 ppm and also there is no equivalent peak for the alcohol.

The methylene hydrogens will only be significant upfield between the 0 and 3 ppm peak between the given structures.  

Answer:

The correct answer is -

1.  a) The bubbles will shrink, some may vanish.

2. a) Can A will make a louder and stronger fizz than can B.

Explanation:

In the first question, it is given that the bottle is not opened and therefore, squeezing the bottle filled with a carbonated drink will increase the pressure on the carbonated liquid which forces the bubbles to dissolve or displace or vanish as it moves to empty space.

Thus, the correct answer would be - The bubbles will shrink, some may vanish

In the second question, there are two different conditions for two different unopened cans of carbonated water that are different temperatures one at the garage with higher temperature and one in the fridge at low temperature. As it is known that higher the temperature less will be solubility of gas in liquid so gas in can A will be less soluble which means it has more gas and it will make louder and stronger fizz than B which was stored at low temperature.

thus, the correct answer would be - Can A will make a louder and stronger fizz than can B.

Answer:

Two physical properties that would allow differentiation between copper, lead and iron shot are - Color and Density

COPPER - Color - Copper has a reddish brown color .

                Density - Density of copper is 8.96 [tex]g/cm^{3}[/tex]

LEAD - Color - Lead is grey in color.

           Density - Density of Lead is 11.34[tex]g/cm^{3}[/tex]

IRON SHOT - Color-  Iron shot is in grey color with extra shine .

                       Density - Density of iron shot is 10.49 [tex]g/cm^{3}[/tex]

Explanation:

COPPER- Copper (Cu) is a reddish, highly ductile metal that belongs to Group 11 (Ib) of the periodic table and is a particularly excellent conductor of electricity and heat. Copper is found in nature in its free metallic state.

LEAD- Lead (Pb) is a soft, silvery white or grayish metal in Periodic Group 14 (IVa). Lead is a weak conductor of electricity and is very malleable, ductile, and thick. Lead, which has been known since antiquity and is considered the oldest of metals by alchemists, is extremely durable and corrosion-resistant, as evidenced by the continued use of lead water pipes constructed by the ancient Romans.

IRON SHOT - Small round iron balls used as projectiles are known as iron shot. Balance scales are used with simple weights. Iron balls are used in the shot put competition.

Hence , the differentiation is mentioned in the above answer.

Answer:

A) Less amount of NaOH will be required

B) Reliability decreases with increase in concentration of NaOH solution

C) Mass of NaOH = 0.223 g

D) Number of hydroxide ions = 3.36 × 102²¹

E)Moles of H₂SO₄ neutralized = 0.00279 moles of H₂SO₄

Explanation:

A) Since the number of moles of acetic acid in the vinegar sample is constant, the number of moles of NaOH reacting with acetic acid is constant as well.

Volume = number of moles / concentration

Assuming, number of moles = 1, concentration = 0.1 M

Volume = 1/0.1 = 10

With increase in concentration,

Volume = 1/0.5 = 2

Therefore, less amount of NaOH will be required

B) An increase in concentration of base added will results in lesser volume of based used. This will result in an increase in percentage error as well as decrease innthe accuracy of determining the endpoint. Hence, reliability decreases

C) mass = concentration × volume × molar mass

Molar mass of NaOH = 40.0 g, volume of NaOH = 23.46 mL = 0.02346 L, concentration = 0.238 M

Mass of NaOH = 0.238 × 0.02346 × 40

Mass of NaOH = 0.223 g

D) number of moles of NaOH in 0.223 g = 0.233/40 = 0.00558 moles

1 mole of NaOH produces 1 mole of hydroxide ions; 0.00558 moles of NaOH will produce 0.00558 moles of hydroxide ions

Number of hydroxide ions in 0.00558 moles = 0.00558 × 6.02 × 10²³

Number of hydroxide ions = 3.36 × 102²¹

E) H₂SO₄ + 2 NaOH ----> Na₂SO₄ + 2 H₂O

1 mole of H₂SO₄ requires 2 moles of NaOH for complete neutralization

There are 0.00558 moles of NaOH in 23.46 mL of 0.238 M NaOH solution.

Moles of H₂SO₄ required to neutralize 0.00558 moles of NaOH = 0.00558/2

Moles of H₂SO₄ neutralized = 0.00279 moles of H₂SO₄

Answer:

The answer is D

Explanation:

The hornwort is telling what that exact plant does and the kangaroo paw is telling what they do physically to hold onto water

The first adaptation is to the life cycle, and the second is to the physical traits thus, the kangaroo paw describes what they physically do to hold onto water, and the hornwort describes what that particular plant performs. So, the correct option is D.

A species or organism gradually grows more accustomed to its surroundings through the process of adaptation. The behavioral or physical characteristics of an animal that improve its ability to thrive in its ecosystem are referred to as adaptation. Animals can adapt by changing how they look to hide from predators (camouflage). To survive in their habitats, different species have evolved various adaptations.

In the above given example, the life cycle is the first adaptation, and the physical characteristics are the second. Therefore, the hornwort defines what that particular plant does, and the kangaroo paw represents what they physically do to hold onto water.

Therefore, the correct option is D.

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