question 7 a data analyst is creating a visualization in tableau public. they want to keep it private from other users until it is complete. which icon should they click? 1 point close eye source private

Answer: The answer is B 1,3

To prepare the pH 4.00 buffer solution, you should mix approximately 61.35 mL of the 0.100 M benzoic acid solution with 38.65 mL of the 0.240 M sodium benzoate solution.The ratio of benzoic acid to sodium benzoate in the buffer solution using the Henderson-Hasselbalch equation.

To prepare a pH 4.00 buffer solution using benzoic acid and sodium benzoate, we need to calculate the appropriate volumes of the 0.100 M benzoic acid and 0.240 M sodium benzoate solutions.

First, we need to determine the ratio of benzoic acid to sodium benzoate in the buffer solution. The Henderson-Hasselbalch equation can help us with this calculation:

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

Given that the pH is 4.00 and pKa is 4.20, we can rearrange the equation:

log([A-]/[HA]) = pH - pKa

log([A-]/[HA]) = 4.00 - 4.20

log([A-]/[HA]) = -0.20

Next, we take the antilog of -0.20 to find the ratio of [A-] to [HA]:

[A-]/[HA] = antilog(-0.20)

[A-]/[HA] = 0.63

The ratio of [A-] to [HA] is 0.63.

Now, let's calculate the volumes of each solution needed. Let's assume x represents the volume (in mL) of the 0.100 M benzoic acid solution and y represents the volume (in mL) of the 0.240 M sodium benzoate solution.

Since the total volume is 100.0 mL, we have the equation: x + y = 100

Considering the ratio of [A-] to [HA] as 0.63, we can write the equation: y/x = 0.63

Solving these two equations simultaneously will give us the volumes of each solution:

x + y = 100

y/x = 0.63

By substituting y = 0.63x from the second equation into the first equation, we get:

x + 0.63x = 100

1.63x = 100

x = 61.35 mL (rounded to two decimal places)

Substituting this value back into the equation x + y = 100, we find:

61.35 + y = 100

y = 38.65 mL (rounded to two decimal places)

Therefore, to prepare the pH 4.00 buffer solution, you should mix approximately 61.35 mL of the 0.100 M benzoic acid solution with 38.65 mL of the 0.240 M sodium benzoate solution.

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Answer:

270 sec . ( = 4 min . 30 sec . ) Explanation: Any radio wave is moving at the speed of light, regardless of the frequency, so the frequency should be superfluous information. The speed is light is close to 300 , 000 k m s I take the distance you are given, to be 8.2 ⋅ 10 7 k m (since 8.2 ⋅ 107 k m doesn't make good sense - it's less than 1000 km) i.e. 82 , 000 , 000 km.

Before we actually compute this, we can notice that this is a little more than half the distance of the earth from the sun (150 mill. km), a distance the light uses 500 sek. = 8 min 20 sec. to travel, so we should get about 4 1 2 min for the radio wave to reach Mars from the earth.

Actual calculation: 82 , 000 , 000 km/300 , 000 k m s = 820 3 s = 273.3 s As the distance is given with 2 significant figures, we round this off to 270 sec = 4 min 30 sec.

Explantation:

Hope this helps =)

The correct balanced chemical equation is FeCl₃(aq) + Na₂S(aq) → 3Fe₂S₃(s) + 3NaCl(aq)

To achieve a chemical equation's balance:

Fe₂S₃ (s) + NaCl (aq) FeCl₃ (aq) + Na₂2S (aq)

Let's start by balancing the atoms of iron (Fe). The iron atoms are already balanced, since there are two on the reactant side and two on the product side.

Let's now balance the atoms of sodium (Na). Two sodium atoms are present on the reactant side, hence two sodium atoms are required on the product side. By adding a coefficient of 2 in front of NaCl, we may do this:

Let's balance the sulfur (S) atoms lastly.

FeCl3(aq) + Na2S(aq) → 3Fe2S3(s) + 3NaCl(aq)

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Answer:

They would most likely starve and die UNLESS they could move to another habitat or tend to eating other sources of food. All the other animals in the food web would die too, because their food supplies would have gone. The populations of the consumers would fall as the population of the producer fell.

When a organism is removed, the organism who eats or hunt them will decrease some because they lost one of the food source even though they still have other food sources. This new organism will brake the balance of the ecosystem so their food sources will decrease by having too many predators that hunt and eat them.

In food chain's if one source from it is ever removed it would mess up the entire chain causing issue

In order to identify the carbon atoms that most likely came from acetylene in the synthesis process, we need to understand a bit more about the properties of acetylene and its reactions.

Acetylene is a hydrocarbon with the chemical formula C2H2, meaning it is composed of two carbon atoms and two hydrogen atoms. When acetylene undergoes a reaction known as hydroboration-oxidation, it can be transformed into a variety of organic compounds, including alcohols and aldehydes.

In order to determine which carbon atoms in the starting material most likely came from acetylene, we would need to know more about the specific synthesis process being used. However, it's possible that the carbon atoms that came from acetylene would be the ones directly attached to the carbon-carbon triple bond in the molecule.

Without more information, it's difficult to say for sure which specific carbon atoms in the starting material came from acetylene. However, by understanding the properties and reactions of acetylene, we can make some educated guesses about which atoms might be involved in the synthesis process.

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Answer:

protons

Explanation:

btw you protons and electrons are always the same

prcAnswer:

e c. proton

Explanation:

i pueslist

Answer:

The answer is hydrogen ions

According to the equilibrium law, this should move the AgCl equilibrium to the left (i.e., favor the reverse reaction) until the system finds equilibrium once more. This will increase the concentration of Cl-(aq) ions in the solution.

The following equilibrium is established by an AgCl solution that is saturated:

Ag+(aq) + Cl- =>AgCl(s) (aq)

NaCl will entirely separate into ions when added to the solution:

Na+(aq) + Cl=> NaCl(s) (aq)

According to the equilibrium law, this should move the AgCl equilibrium to the left (i.e., favor the reverse reaction) until the system finds equilibrium once more. This will increase the concentration of Cl-(aq) ions in the solution.

Because part of the Ag ions precipitated out, the [Ag+] in the new system will be lower than it was in the original saturated solution, while the [Cl-] ions will be higher (because you added more when you added NaCl). There will have been some precipitation of that excess Cl-, but not all of it. The result will be the same as the Ksp of AgCl if these new ion concentrations are entered into the Ksp equation.

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the question you are looking for is

What would happen to the Ag+ and Cl- concentrations if solid NaCl were dissolved in a saturated solution of AgCl in water?

Answer: In this compound, phosphorous and oxygen act together as one charged particle, which is connected to magnesium, the other charged particle.

Explanation:

Answer:

it will probably flame up or explode or maybe start boiling

Answer:

A- mixture

B- element

C- compound

Explanation:

A mixture is composed of two or more substances. Since it is not entirely homogeneous throughout, then it can not melt or boil at a fixed temperature.

An element is any substance that cannot be decomposed into simpler substances by ordinary chemical processes. This describes substance B.

A pure chemical element has a fixed melting and boiling point.

A compound is composed of one or more chemical elements. A compound may be broken down into its components by certain processes.

Answer:

The molarity is 8.52M

Explanation:

molality = moles of solute/kg of solvent = 5.2mol/kg

moles of solute = 5.2mole

mass of solute = moles of solute × MW = 5.2 × 56.106 = 291.8g

mass of solvent = 1kg = 1000g

Mass of solution = mass of solute + mass of solvent = 291.8g + 1000g = 1291.8g

Density of KOH = 2120g/L

Volume of solution = mass/density = 1291.8/2120 = 0.61L

Molarity = number of moles of solute/volume of solution = 5.2/0.61 = 8.52M

The concentration in the solution is 1.94 mol/L

From the question,

We are to determine the concentration of 10 moles of potassium hydroxide in 5.16 L of solution.

From the formula

Number of moles = Concentration × Volume

Then, we can write that

\(Concentration = \frac{Number\ of\ moles}{Volume}\)

From the question,

Number of moles of potassium hydroxide (KOH) = 10 moles

Volume of solution = 5.16 L

∴ Concentration of the solution = \(\frac{10}{5.16}\)

Concentration of the solution = 1.94 mol/L

Hence, the concentration in the solution is 1.94 mol/L

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Here is the complete question:

Calculate the concentration in each of the following solutions:

1. 10 moles of potassium hydroxide in 5.16 L of solution

Answer:

option B it was captured by earth's gravity

Explanation:

please Brinlmark me please

Answer:

false

Explanation:

magnetic field lines can be accurately observed using *iron filling*

The molar concentration of a 12% sodium chloride solution is approximately 2.05 M.

To determine the molar concentration of a 12% sodium chloride solution, we need to convert the given percentage concentration into molarity.

First, we need to understand that the percentage concentration refers to the mass of the solute (sodium chloride) relative to the total mass of the solution.

In this case, a 12% sodium chloride solution means that there are 12 grams of sodium chloride in 100 grams of the solution.

To convert this into molar concentration, we need to consider the molar mass of sodium chloride, which is 58.5 g/mol.

We can start by calculating the number of moles of sodium chloride in 12 grams:

Moles of sodium chloride = mass of sodium chloride / molar mass of sodium chloride

Moles of sodium chloride = 12 g / 58.5 g/mol = 0.205 moles

Next, we calculate the volume of the solution in liters using the density of the solution. Since the density is not provided, we assume a density of 1 g/mL for simplicity:

Volume of solution = mass of solution / density

Volume of solution = 100 g / 1 g/mL = 100 mL = 0.1 L

Finally, we calculate the molar concentration (Molarity) by dividing the number of moles by the volume in liters:

Molar concentration = moles of solute / volume of solution

Molar concentration = 0.205 moles / 0.1 L = 2.05 M

Therefore, the molar concentration of a 12% sodium chloride solution is approximately 2.05 M.


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A serum specimen from a 1-year-old girl with hyperlipoproteinemia and lipase deficiency that was refrigerated overnight would most likely be usable for a lipid profile.

A serum specimen from a 1-year-old girl with hyperlipoproteinemia and lipase deficiency that was refrigerated overnight would most likely be usable for a lipid profile. Lipid profile is a blood test that measures the amount of cholesterol, triglycerides, and other lipids present in your blood. A lipid profile test can help diagnose hyperlipoproteinemia and lipase deficiency.

It helps determine the total amount of lipids, including cholesterol, in your blood.A serum specimen is a blood sample that has been collected and separated from red blood cells. Serum specimens are refrigerated overnight because they are stable at low temperatures. This helps prevent changes in the sample's lipid profile.

The lipid profile results for the patient described above indicate that the patient has a high cholesterol level, an increased level of LDL cholesterol, a low level of HDL cholesterol, and a high level of triglycerides.

The results of this lipid profile can be used to diagnose and monitor the patient's condition. A follow-up test will be required after the treatment has been given in order to monitor its efficacy and check whether the lipid profile is within the normal range.

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Answer:

chemical energy

Explanation:

Answer:

1.26mol/dm3

Explanation:

Answer:

Its D

Explanation:

Ali is using a specialized headphone that cancels the extra noise in the atmosphere.

Megan is using a transmitter to convert electrical signals into radio waves.

Kristoff is using a microphone to convert sound waves into the electrical signals.

Jenna is using the radio to convert radio waves into sound waves.

Answer:

D. Ali is using specialized headphones, Megan is using a transmitter, Kristoff is using a microphone, and Jenna is using a radio.

Explanation:

Answer:A.) Mechanical and nuclear

Explanation:

iv,e got nuthing sorry im only a kid i have to leared that yet

answer:

B) Radiant and Thermal

explanation:

  "In a flashlight, chemical energy in the batteries is converted to electrical energy when the circuit including the batteries, switch and light bulb is completed. The electrical energy is converted to light (electromagnetic / radiant energy) and some heat (thermal energy) by the light bulb." -https://www.crosbyisd.org/cms/lib6/TX02216626/Centricity/Domain/392/6_9C-EnergyFormsConversions.pdf

Answer:

A = 74 g

Explanation:

Given data:

Ma-74 (74.333 - 85%)

Ma-75 (74.999 - 10%)

Ma-76 (75.700 - 5%)

Atomic mass close to = ?

Solution:

1st of all we will calculate the average atomic mass.

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) + (abundance of 3rd isotope × its atomic mass) / 100

Average atomic mass  = (85×74.333)+(10×74.999)+(5×75.700) /100

Average atomic mass =  6318.305 +749.99+ 378.5 / 100

Average atomic mass= 7446.795/ 100

Average atomic mass = 74.467 amu

The average atomic mass is closer to the 74 g.

Answer: B.) Salt and water

Explanation:  A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water.

Hope this helps :)

Answer:

B. Salt and water

Explanation:

have a nice day!!

Answer:

C. Chemical reactions may have deteriorated the rubber

Explanation:

A tire ages with time and most of the time this happens due to chemical reactions in the rubber parts. This could happen faster due to heat and sun.

As a tire is deteriorating or aging, a chemical change happens. What happens is that more chemical bonds are going to be produced with time between the molecules. We call this the process of oxidation. This actually bad for the tire, because the rubber would turn out to be stuffs d strong causing the tires thread to separate and also disintegration would occur.

Some assumptions from the kinetic molecular theory , one is most frequently cited to explain diffusion of a gas is the gas consist of  tiny particles moving in the random straight line motion.

The assumption of the kinetic molecular theory are :

Thus, the gas is the gas consist of  tiny particles moving in the random straight line motion explain the diffusion of a gas.

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4 moles of ammonia can be produced from the reaction of 56.0 grams of nitrogen.

What is mole?

The International System of Units uses the mole (symbol: mol) as the unit of substance amount. How many elementary entities of a particular substance are present in an object or sample is determined by the quantity of that substance. It is specified that the mole contains exactly 6.02214076×10²³ elementary entities.

The reaction of hydrogen and nitrogen is

N₂ (s) + 3 H₂ (g) → 2 NH₃

The mass of nitrogen is 28.

The mass of hydrogen is 2

The mass of 3 H₂ is 6 .

The mass of ammonia is 14 + (3×1) = 14 + 3 = 17

The mass of 2 NH₃ is 34.

28 grams of nitrogen produced 2 moles of ammonia.

1 grams of nitrogen produced 2/28 moles of ammonia.

56 grams of nitrogen produced (2 × 56)/28 moles of ammonia.

                                                     = 4 moles

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