Part In the PhET simulation window, click the Introduction menu at the bottom of the screen Click on the image of pl Paper to see the paper and the price Vary the solution and insert the pH paper into the solution to observe the color Calculate the pH values for solutions with the given hydon monohyddidelor concentrations below, and sort them onto the color of pH paper closest to the color you would expect them to produce Label Concentration A [OH]=6.03 x 10-"M B [H,O'] = 9.77 x 10M с [H3O+] - 6.17 x 10-"M (OH) = 1.71 x 10M [H:0"] = 8.32 x 10M [H, O*1 = 1.00 x 10-'M OH) -8.91 x 10 M D Drag the appropriate labels to their respective targets.

The concentration of the \(H_2SO_4\) solution is 0.1789 (rounded to 4 decimals).

To calculate the concentration of the \(H_2SO_4\)  solution, we will use the concept of moles and the balanced chemical equation:
\(H_2SO_4\) (aq) + 2 NaOH (aq) → \(Na_2SO_4\) (aq) + \(2H_2O\) (l)
First, find the moles of NaOH:
moles of NaOH = volume (L) × molarity
moles of NaOH = 0.01525 L × 0.5866 M = 0.0089459 moles
Since the stoichiometry in the balanced equation is 1:2 (\(H_2SO_4\):NaOH), divide the moles of NaOH by 2 to find the moles of \(H_2SO_4\):
moles of \(H_2SO_4\) = 0.0089459 moles / 2 = 0.00447295 moles
Now, calculate the molarity of \(H_2SO_4\):
molarity = moles of \(H_2SO_4\) / volume of \(H_2SO_4\) (L)
molarity = 0.00447295 moles / 0.025 L = 0.1789 M
The concentration of the \(H_2SO_4\) solution is 0.1789 (rounded to 4 decimals).

Learn more about molarity :

https://brainly.com/question/8732513

#SPJ11

Answer:

The answer is lemonade.

Weaker acids are those which tend to have a higher pH from 4 to at least 6 stronger acids have low pH from 2 and below that's from 2 to 0.

Hope this helps

Hope

Answer:

i believe it is in the 200

Explanation:

Answer:

1 sulfide

2 Fluoride

3 A

5 A

6 2

Answer:

Answer. Answer: The circulatory system is a network consisting of blood, blood vessels, and the heart. This network supplies tissues in the body with oxygen and other nutrients, transports hormones, and removes unnecessary waste products.

Explanation:

Answer:

ME AND YOU HAVE THE SAMEEEE USER BUT LOOK

The circulatory system is a network consisting of blood, blood vessels, and the heart. This network supplies tissues in the body with oxygen and other nutrients, transports hormones, and removes unnecessary waste products.

Explanation:

Answer:120.0mL

Explanation:

Answer:

Osmosis

Explanation:

Water is very essential for the body. When we drink water, our blood cells absorbs water from the body. This happen by a process called as osmosis process. Osmosis is type of diffusion process.

Water along with oxygen and carbon dioxide are some of the simple molecules that moves into the blood cell. Osmosis is the process by which water molecules passes into the cell bodies through its semi permeable membrane.    

Answer:

False

Explanation:

The air masses are not responsible for weather , it is cause by the Earth evolution

The specific heat capacity of water is 4.18 J/(g K) and the given amount of water is more than 100 grams. We need to calculate the energy absorbed by the water to reach boiling point when 5.39 × 10^5 J of heat is supplied.

The amount of water used is not provided in the question, therefore, let's first calculate the energy required to raise the temperature of 100g of water from room temperature (25°C) to its boiling point (100°C) using the formula,Q = m × c × ΔTwhere,Q = energy absorbedm = mass of waterc = specific heat capacity of waterΔT = change in temperature of water= 100 - 25 = 75°C (since the water is heated until it just begins to boil)Thus,Q = \(100 g × 4.18 J/(g K) × 75°C= 31350 J= 31.35 kJ\) of energy is required to heat 100g of water from 25°C to 100°C.

Now, let's determine the mass of water using the amount of heat energy supplied:Q =\(m × c × ΔT, where Q = 5.39 × 10^5 Jm = Q / (c × ΔT)= 5.39 × 10^5 J / (4.18 J/(g K) × 75°C)= 204.55 g\)(approx.)Therefore, more than 100 g of water is required to absorb 5.39 × 10^5 J of heat to reach its boiling point.

To know more about capacity  visit:

https://brainly.com/question/33454758

#SPJ11

Answer:

Carrying capacity is the number of organisms that an ecosystem can sustainably support. To determine it on a graph you need to locate the point on the graph where the population line is horizontal.

Explanation:

The Lewis structure of HCCH is a triple bond between the two carbon atoms and a single bond between each carbon atom and a hydrogen atom.

To draw the Lewis structure for HCCH (acetylene), follow the below steps:

Step 1: Find out the total number of valence electrons of all atoms.Valence electrons in H = 1 electron.Valence electrons in C = 4 electrons. Total valence electrons in HCCH molecule = (2 × 1) + (2 × 4) = 10 electrons.

Step 2: Choose the central atom and draw the bond line structure.The central atom in HCCH is C. Two H atoms are attached to one C atom, and another C atom is attached to it through a triple bond. HC≡CH

Step 3: Add electrons to outer atoms first.Complete octet of the H atoms by adding one electron to each. Two electrons have now been used. Still, there are 8 more electrons left. These electrons are used to complete the octet of the C atom. The C atom has only four valence electrons but it needs eight electrons to achieve octet configuration. Therefore, the C atom has four electrons short. These four electrons will come from the nonbonding electrons of the other C atom bonded to it.

Step 4: Add electrons to the central atom.The second C atom is also deficient in electrons. Therefore, it will have only two electrons in its valence shell. The other four electrons will be in the form of a triple bond with the first C atom. Since triple bond shares three electrons, two more electrons are needed to complete the octet of the second C atom. These electrons come from the nonbonding electrons of the first C atom bonded to it. Hence, the Lewis structure for HCCH (acetylene) is:Main Answer: H-C≡C-H

Therefore, the Lewis structure of HCCH is a triple bond between the two carbon atoms and a single bond between each carbon atom and a hydrogen atom.

To know more about Lewis structure visit:

brainly.com/question/29603042

#SPJ11

Answer:

Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction. ...

Physical state of the reactants and surface area. ...

Temperature. ...

Presence of a catalyst.

Here is the structure of 2-methylpropanal and its enol tautomer:

   CH3       H

    |        |

H3C--C--CHO <--> H3C--C=C--OH

    |        |

    H        H

The symbol to place between them is an equilibrium arrow, ⇌, indicating that the conversion between the two structures is reversible and can occur under certain conditions.

Here is the structure of the enol tautomer of H3C-CH(CH3)-C(=O)-H:

Copy code

     CH3

      |

H3C--C--C(=O)--H

      |

     CH3

The enol tautomer is formed by the transfer of a proton from the alpha carbon (adjacent to the carbonyl carbon) to the oxygen atom of the carbonyl group, resulting in the formation of a double bond between the alpha carbon and the carbonyl carbon.

Read more about carbonyl carbon here:https://brainly.com/question/13564853
#SPJ11

The diagram represents a (c) nuclear fission reaction because an atom is splitting into two large fragments of comparable mass.

Nuclear fission is a type of nuclear reaction in which the nucleus of an atom splits into two or more smaller fragments. This process is often accompanied by the release of a significant amount of energy. In the diagram, a small ball heading toward a large circle labeled superscript 235 upper U indicates the incident neutron or particle that triggers the fission reaction.

The arrow pointing to an irregular circle labeled superscript 236 upper U represents the nucleus of uranium-236, which is the result of the fission of uranium-235. Uranium-235 is a fissile isotope that can undergo fission when bombarded by a neutron. The irregular circle indicates the nucleus undergoing fission.

The starburst, partially overlaid by two blobs labeled superscript 92 upper K r and superscript 141 upper B a, represents the fission products. During nuclear fission, the nucleus of uranium-236 splits into two large fragments, in this case, krypton-92 and barium-141. These fragments are often radioactive and contribute to the release of energy during the fission process.

The three small balls heading away from the starburst represent the release of additional neutrons during the fission reaction. These neutrons can go on to initiate further fission reactions in a chain reaction, contributing to the sustained release of energy.

for more such questions on reaction

https://brainly.com/question/11231920

#SPJ8

Answer:

\(180^\circ\) by the VSEPR theory.

Explanation:

This question is asking for the bond angle of the \(\rm C=C=O\) bond in \(\rm H_2C=C=O\). The VSEPR (valence shell electron pair repulsion) theory could help. Start by considering: how many electron domains are there on the carbon atom between these two bond?

Note that "electron domains" refer to covalent bonds and lone pairs collectively.

For example, in \(\rm H_2C=C=O\), the carbon atom at the center of that \(\rm C=C=O\) bond has two electron domains:

In VSEPR theory, electron domains around an atom repel each other. As a result, they would spread out (in three dimensions) as far away from each other as possible. When there are only two electron domains around an atom, the two electron domains would form a straight line- with one domain on each side of the central atom. (To visualize, consider the three atoms in this \(\rm C=C=O\) bond as three spheres on a stick. The central \(\rm C\) atom would be between the other \(\rm C\) atom and the \(\rm O\) atom.)

This linear geometry corresponds to a bond angle of \(180^\circ\).

A double replacement reaction, also known as a double displacement reaction or a metathesis reaction, is a type of chemical reaction in which ions are exchanged between two compounds option(3).

In this reaction, the positive and negative ions of two compounds switch places, resulting in the formation of two new compounds.

The general form of a double replacement reaction is AB + CD → AD + CB, where A, B, C, and D represent elements or groups of elements. During the reaction, the cations of the compounds (positively charged ions) trade places, as do the anions (negatively charged ions). This exchange of ions leads to the formation of two new compounds, with the cation of one compound combining with the anion of the other compound.

Unlike single replacement reactions where a single element replaces another in a compound, double replacement reactions involve the exchange of ions. The reaction typically occurs in aqueous solutions or when compounds are dissolved in a solvent. However, double replacement reactions can also occur in other states, such as when two ionic compounds are in the solid state and react.

To summarize, a double replacement reaction involves the exchange of ions between two compounds, resulting in the formation of two new compounds. This reaction does not involve the loss of atoms or the exchange of electrons between individual atoms.

For  more questions double displacement, click on:

https://brainly.com/question/26413416

#SPJ8

Answer:

C: checking your email

Explanation:

I believe that C would be impossible, as you cannot use wireless networks without radio waves

To determine the pH of the buffer solution, we can use the Henderson-Hasselbalch equation:

pH = p Ka + log ([A-] / [HA])

In this case, the acid is H Ac (acetic acid) and its conjugate base is Ac- (acetate ion). The given Ka value for H Ac/Ac- is 1.74 x 10^-5.

Given concentrations:

[H Ac] = 0.100 M

[Ac-] = 0.150 M

First, we need to calculate the ratio of [A-] / [HA]:

[A-] / [HA] = [Ac-] / [H Ac]

[A-] / [HA] = 0.150 M / 0.100 M

[A-] / [HA] = 1.5

Now we can substitute the values into the Henderson-Hasselbalch equation:

pH = p Ka + log ([A-] / [HA])

pH = -log10 (1.74 x 10^-5) + log (1.5)

Using the logarithmic properties, we can simplify the equation:

pH = -log10 (1.74 x 10^-5) + log (1.5)

pH = -(-4.76) + log (1.5)

pH = 4.76 + 0.176

Calculating the sum:

pH ≈ 4.94

Therefore, the pH of the buffer solution is approximately 4.94.

Was this response better or worse?

Better

Worse

Same

learn more about buffer solution, here:

https://brainly.com/question/10643807

#SPJ11

∂c/∂t represents the rate of change of concentration with respect to time, D is the diffusion coefficient, and ∇·(D∇c) represents the divergence of the diffusion flux.

(a) The total amount of pollutant in the region R can be found by integrating the concentration c(x,y,z,t) over the volume V of the region R. Mathematically, it can be expressed as:

Total amount of pollutant = ∫∫∫V c(x,y,z,t) dV

(b) It is reasonable to assume that the flow J of the pollutant is proportional to the gradient of the concentration, as this relationship is based on Fick's law of diffusion. According to Fick's law, the flow of a substance is proportional to the concentration gradient. Mathematically, it can be expressed as:

J = -D ∇c

Where J is the flow of the pollutant, D is the diffusion coefficient, and ∇c is the gradient of the concentration.

(c) To derive the partial differential equation governing the diffusion of the pollutant, we can apply the continuity equation, which states that the rate of change of the concentration in a given volume is equal to the divergence of the flow. Mathematically, it can be expressed as:

∂c/∂t = -∇·J

Using the relationship from part (b), we can substitute it into the continuity equation:

∂c/∂t = ∇·(D∇c)

This is the partial differential equation governing the diffusion of the pollutant, where ∂c/∂t represents the rate of change of concentration with respect to time, D is the diffusion coefficient, and ∇·(D∇c) represents the divergence of the diffusion flux.

Learn more about Fick's law from given link: https://brainly.com/question/33379962

#SPJ11

Answer: 1849.9584

Explanation:

The amount made from removing 68.1 kilograms of old copper tubing is $375.34.

The amount made from removing 68.1 kilograms of old copper tubing is calculated as follows;

A = mass x cost per mass

mass = 68.1 kg = 150.1348 lb

Amount = $2.5/lb x 150.1348 lb

Amount =  $375.34

Thus, the amount made from removing 68.1 kilograms of old copper tubing is $375.34.

Learn more about amount of money here: https://brainly.com/question/24373500

#SPJ1

Answer:

density=6.74g/ml

:320g÷47.5ml

d=6.74g/ml

thank you

I hope this is helpful

Answer:

It is c I am doing the test I hope this helps ; )

Explanation:

Answer:

c

Explanation:

The gas occupies 4.03 liters at standard temperature and pressure(STP)    

At STP (standard temperature and pressure), the temperature is 273.15 K and the pressure is 1 atm. The molar volume of an ideal gas at STP is 22.4 L/mol.

 Using the ideal gas law, we can calculate the volume of a gas:

 PV = n RT

 where P is the pressure, V is the volume, n is the number of moles, R is the gas constant (0.08206 L· atm/mol· K), and T is the temperature in Kelvin.

 At STP, the pressure is 1 atm and the temperature is 273.15 K. Tial :

 V = (n RT)/P

V = (0,182 mol x 0,08206 L atm/mol K x 273,15 K) / 1 atm

V = 4,03L

To know more about standard temperature and pressure visit :

https://brainly.com/question/29129606

#SPJ4

1.  the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.  the final concentration of KOH after adding 550 mL of water to 125 mL of 3.01 M KOH solution is approximately 0.557 M.

1.) If 125 mL of water is added to 45.3 mL of a 0.71 M NaOH solution, the resulting solution will be a diluted NaOH solution. The addition of water will increase the total volume while reducing the concentration of NaOH. To determine the final concentration of NaOH, we need to consider the conservation of moles.

First, let's calculate the moles of NaOH in the initial solution:

moles of NaOH = volume (in L) × concentration (in M)

moles of NaOH = 0.0453 L × 0.71 M = 0.0321433 moles

After adding 125 mL (0.125 L) of water, the total volume of the solution becomes 0.0453 L + 0.125 L = 0.1703 L.

To find the final concentration, we divide the moles of NaOH by the total volume:

final concentration of NaOH = moles of NaOH / total volume

final concentration of NaOH = 0.0321433 moles / 0.1703 L ≈ 0.189 M

Therefore, the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.) If 550 mL of water is added to 125 mL of a 3.01 M KOH solution, the resulting solution will also be a diluted solution. Again, we will apply the conservation of moles to determine the final concentration of KOH.

First, calculate the moles of KOH in the initial solution:

moles of KOH = volume (in L) × concentration (in M)

moles of KOH = 0.125 L × 3.01 M = 0.37625 moles

After adding 550 mL (0.55 L) of water, the total volume of the solution becomes 0.125 L + 0.55 L = 0.675 L.

To find the final concentration, divide the moles of KOH by the total volume:

final concentration of KOH = moles of KOH / total volume

final concentration of KOH = 0.37625 moles / 0.675 L ≈ 0.557 M

For more such questions on concentration visit:

https://brainly.com/question/28564792

#SPJ8

Answer:

1-T

2-F

3-T

4-T

Explanation:

big brain

Option 3 accurately represents the essence of an ethogram as an inventory of species-specific behaviors.

An ethogram can be best described as an inventory of the behavior of a particular species. It is a systematic catalog or list of behaviors exhibited by a specific animal species.

An ethogram provides a comprehensive overview of the behaviors displayed by the animals under study, documenting various activities, actions, and patterns of behavior.

While options 1 and 2 are related to visual representations or descriptions of behavior, they do not capture the comprehensive nature of an ethogram. Option 4 refers specifically to behaviors observed in response to an experimental intervention, which is more narrow in scope compared to an ethogram. Therefore, option 3 accurately represents the essence of an ethogram as an inventory of species-specific behaviors.

To know more about ethogram, click here, https://brainly.com/question/29839391

#SPJ11

Answer:

Explanation:

Q1.

(a) 46 200

accept 46 000

allow 1 mark for correct substitution

ie 0.5 × 4200 × 22 provided no subsequent step

2

(b) Energy is used to heat the kettle.

[3]

Q2.

(a) (approximate same size particles as each other and as liquid and gas) touching

do not accept particles that overlap

regular arrangement (filling the square)

(b) condensing

(c) solid

(d) physical

(e) particles have more kinetic energy

particles move faster

(f) mass of the liquid

specific latent heat of evaporation

(g) 2 × 4 200 × 801

672 000 (J)

an answer of 672 000 (J) scores 2 marks

[11]

Q3.

(a) x-axis labelled and suitable scale

Page 12 of 13

points plotted correctly

allow 5 correctly plotted for 2 marks, 3−4

correctly plotted for 1 mark

allow ± ½ square

2

line of best fit

(b)

allow ecf from line of best fit in part (a)

0.075 (°C/s)

an answer of 0.075 (°C/s) scores 2 marks

(c) Δθ = 11.5 (°C)

a calculation using an incorrect temperature

scores max 3 marks

ΔE = 1.50 × 900 × 11.5

ΔE = 15 525 (J)

ΔE = 15.525 (kJ)

an answer of 15.525 (kJ) or 15.53 (kJ) or 15.5

(kJ) scores 4 marks

an answer of 15 525 (kJ) scores 3 marks

[10]

Q4.

(a) 80 °C

ΔE = 0.5 × 3400 × 80

ΔE = 136 000 (J)

an answer of 136 000 (J) scores 3 marks

(b) energy is dissipated into the surroundings

allow any correct description of wasted energy

(c) put a lid on the pan

allow any sensible practical suggestion

eg add salt to the water

Page 13 of 13

(d) efficiency = 300/500

efficiency = 0.6

an answer of 0.6 or 60% scores 2 marks

allow efficiency = 60%

an answer of 0.6 with a unit scores 1 mark

an answer of 60 without a unit scores 1 mark