To prepare a fertilizer, an engineer dilutes a stock solution of sulfuric acid by adding 25.0 m3of 7.50 M acid to enough water to make 500. m3. What is the mass (in g) of sulfuric acid per milliliter of the diluted solution?

The conversion of the given units are as follows:

98.6oF = 37°C = 310 K = 98.33°F

25.0°C = 298K = 76.73°F

131.85°C = 405 K

Temperature is a physical quantity that quantifies our feelings of hotness and coldness. A thermometer is used to measure temperature.

According to the International System of Units, the SI unit of temperature is Kelvin, which is represented by the symbol K. In the fields of science and engineering, the Kelvin scale is widely accepted or used.

However, in most parts of the world, temperature is measured using the Celsius or Fahrenheit scale.

Thus, The conversion of the given units are 98.6oF = 37°C = 310 K = 98.33°F.

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Answer:

they bonding

Explanation:

dfffffffffffffff

Answer:

To plot a graph, you put the independent variable on the y-axis and the dependent on the x-axis. This might sound really hard, but it's not.

A dependent variable is something that is changed by other factors. For example, in this question, the temperature is dependent on the time. You can't change time by temperature, it's impossible. But you CAN change temperature by the more time that goes by. This makes Time independent and Temperature Independent.

You write the graph so that Time (1-10) goes up the side (the y-axis), starting from the bottom left (this point is called the origin). Then you write the Temperature on the bottom, from left to right. The numbers you are given have to have the same amount of points (the little squares you see) in between them, and you have to be able to fit all of the numbers on the graph.

The last step is to plot the points on the graph so they match up. If the time is 1, then you go to where the time says one and move over to the right to where it is the correct temperature. That is where you put your point. You keep doing this until you have all the points plotted and you can connect the dots.

Explanation:

Answer:

the boiling point of solution at 3 decimal point is 100.329०C Ans.

Explanation:

given data -

molality of Nacl = 0.321 m

molal boiling point elevation constant (Kb) =0.512०C/m

# formula of change of boiling point of sample =

∆ Tb =i × Kb × m

Kb = molal boiling point of elevation constant

m = molality

i = vont's hoff factor.

Nacl is strong electrolyte and its 100% dissociate so the value of i for Nacl is 2

put value in the formula

∆ Tb = 2 × 0.512 ०C/m × 0.321m

= 0.3287

= 0.329०C

∆Tb = T'b - Tb

T'b = boiling point of solution

Tb= boiling point of solvent( water)

0.329०C = T'b - 100०c ( boiling point of water = 100०C)

T'b = 0.329०C + 100०C

= 100.329०C

hope this helps

Option B, where [OH-] is 1.0 x 10-13 mol dm-³3, is the only one that can be considered basic. Therefore, Option B is the correct answer.

To determine whether a solution is basic or acidic at 25 °C, we can compare the concentration of hydroxide ions ([OH-]) with the concentration of hydronium ions ([\(H_3O\)+]). In a neutral solution, the concentrations of [\(H_3O\)+] and [OH-] are equal, resulting in a pH of 7.

Option A states that the concentration of [\(H_3O\)+] is 1.0 x 10-3 mol dm-3. Since [\(H_3O\)+] represents the concentration of hydronium ions, this solution would be acidic because the concentration of [\(H_3O\)+] is higher than [OH-], indicating an excess of hydronium ions.

Option B states that the concentration of [OH-] is 1.0 x 10-13 mol dm-³3. In this case, [OH-] is higher than [\(H_3O\)+], indicating an excess of hydroxide ions. Therefore, this solution would be considered basic.

Option C states that the solution has a pH of 4.00. A pH of 4.00 is below the neutral pH of 7, indicating an excess of hydronium ions and an acidic solution. Therefore, this option does not represent a basic solution.

Option D states that the concentration of [\(H_3O\)+] is 1.0 x 10-13 mol dm-3. Similar to Option A, this concentration of [\(H_3O\)+] indicates an acidic solution, not a basic one.

Option B

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Answer:

D is the correct answer

Explanation:

In order for a solution to be basic at 25 C, the H+ concentration has to be less than the OH- concentration, and given that H+ times OH- is 10^-14, we deduce that H+ must be less than 10^-7 for the solution to be acidic. Thus, A can be eliminated, and so can C. With B, we calculate an H+ concentration of 0.1M, which also fails to be less than 10^-7
Thus, D is the correct answer and we can verify that as H+ is less than 10^-7.



Note: I do not know why my previous answer was deleted for "being incorrect", and i'm not sure how the incorrect answer was "expert verified", but I am as certain that D is the correct answer as i am sure of 3*(4+5-1) being equal to 24.

The solution has a molarity of 0.0924 M.

The number of moles of solute per litre of solution is known as molarity.. For instance, water is both the solution and the solute when table salt is dissolved in it. Each mole of sodium chloride weighs 58.44 grammes. 58.44 grammes of sodium chloride are dissolved in one litre of water to produce one molar solution, or 1M.

Moles of solute per litre of solution is known as molarity (M).

Given: moles of NH3 = 0.355, volume of solution = 3.84 L

Molarity = 0.355 moles / 3.84 L = 0.0924 M

Therefore, the molarity of the solution is 0.0924 M.

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Answer:

its a theory

Explanation:

dealing with the behaviour of matter and light on the atomic and subatomic scale.

Answer:

Because while our lakes are Great, they're comparatively much smaller than oceans. And the gravitational pull isn't strong.

T=41+273=314 k

M=(12)+(16×2)=44g/mol

d=PM/RT

d=685×44/0.0821×314

d=1169.15 g/L

Answer:

please find the attached file.

Explanation:

In the attachment file, we define the order of the ionization of the energy.  

As its components are seen, their energy of ionization rises and falls further.  Nitrogen and oxygen were detected as an anomaly. Nitrogen has more IE than oxygen because Nitrogen has the \(2p^3\) configuration to Is half-filled  It's got bigger IE than B. As, be making the 2s2 configuration fully disc.

Arrangement of elements according to first ionization energy from

highest to lowest ionization energy are Ne>F>O>N>C>B>Be.

Neon, a noble gas with a fully filled electron shell, has the highest ionisation energy of the substances on this list, making it the most stable and least likely to lose an electron. Fluorine has the second-highest ionisation energy, after helium. Due to its strong electron attraction, it is a highly electronegative element, making it more challenging to remove an electron from its outer shell. The ionisation energy of oxygen is third highest. Additionally, it has a high electronegativity and expels an electron with a lot of energy.

The fourth-highest ionisation energy is that of nitrogen, abbreviated as N. In terms of electronegativity, it is comparable to oxygen and requires a lot of energy to remove one electron. Carbon has the fifth-highest ionisation energy, after hydrogen and helium. An enormous amount of energy is needed to take an electron out of its outer shell. The second-lowest ionisation energy on this list belongs to borax, abbreviated as B. Compared to the other elements, boron is simpler to remove an electron from. Beryllium, symbol Be, has the lowest ionisation energy of all the elements on this list. From among these elements, an electron can be taken out the simplest.

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Answer:

D I think

Explanation:

cuz 0 j means there is nothing moving

Answer:

D. when an object is no longer in motion.

Explanation:

Answer:

(C) SO2.

SO2 is known as sulfur dioxide.

The below information about acid rain and SO2’s involvement is from epa.gov:

“Acid rain results when sulfur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and transported by wind and air currents. The SO2 and NOX react with water, oxygen and other chemicals to form sulfuric and nitric acids. These then mix with water and other materials before falling to the ground.”

Explanation:

The amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

To find the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C, we can use the equation Q = mcAT.
First, we need to find the value of m, which is the mass of the water in grams. In this case, it is given as 200 grams.
Next, we need to find the value of AT, which is the change in temperature in degrees Celsius.

This can be calculated by subtracting the initial temperature from the final temperature, which gives us 60 C - 20 C = 40 C.
The specific heat capacity of water, C, is given as 4.18 Joules per gram per degree Celsius.
Now we can plug in the values into the equation:
Q = mcAT
Q = (200 g) x (4.18 J/g°C) x (40°C)
Q = 33,440 J
Therefore, the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

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Mechanical disintegration means breaking into small pieces (option A).

Digestion is the process occuring in the gastrointestinal tract, by which food is converted into substances that can be utilized by the body.

Digestion can, however, be mechanical/physical or chemical/enzymatical. The mechanical digestion involves the breaking down of food into smaller pieces by teeth.

Therefore, according to this question, there is no passage, however, the meaning of mechanical disintegration can be easily detected in biology.

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Ancef (Cefazolin) is a first-generation cephalosporin antibiotic that is used to treat bacterial infections. Cefazolin is available in several formulations, including injectable, intravenous, and powder for injection.

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Answer:

55 moles FeS2

Explanation:

You can't do this without knowing what the reactants and products are. Even then the reactants and products have to have equal numbers of atoms on each side of the equation. That's called balancing.

The bare equation is

FeS2 + O2 → Fe2O3 + SO2

It is not balanced. Just as an example, the sulfurs have 2 on the left and 1 on the right. The oxygens have 2 of the left and 5 on the right, so you have to get all of that balanced.

Start with the oxygen in Fe2O3. It's an odd number. Put 2 in front of Fe2O3

FeS2 + O2 → 2Fe2O3 + SO2

But now the Fe's don't balance. Put a 4 in in front of the FeS2

4FeS2 + O2 ===> 2Fe2O3 + SO2

The Ss are way out of kilter. Put an 8 in front of SO2

4FeS2 + O2 → 2Fe2O3 + 8SO2

Finally the oxygens There are 2*3 + 8*2 = 22 oxygens on the right

Put an 11 (because it is O2) on the left

4FeS2 + 11O2 → 2Fe2O3 + 8SO2

That's your balanced equation

4 mols of FeS2 produce 2 moles of Fe2O3

x mols of FeS2 produce 27.5 mols of Fe2O3

4/x = 2/27.5            Cross multiply

2x = 4*27.5

2x =  110                  Divide by 2

x = 110/2

x = 55            

Explanation:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

Answer:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

Explanation:

edg 2020

Answer:

482

Explanation:

The asbestos exposure during the years 1982 and 1983 was 2.5 fibers per cubic centimeter and 0.8 fibers per cubic centimeter respectively. So asbestos exposure decreased by 1.7 fibers per cubic centimeter during the year 1983.

Breathlessness Persistent, dry cough Chest pain or tightness Lack of a dry, crackling sound in the lungs when you breathe in Wider and rounder fingers and toes are some of the symptoms of asbestos exposure.

The largest group of people exposed to asbestos is those working in the construction industry. Historically, asbestos was also used by pipe fitters and shipyard workers. In addition, asbestos was used by military personnel, auto mechanics, and many other occupations.

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Ketoacidosis is a potentially life-threatening condition that happens when the body begins breaking down fat at very fast rate. The fat is converted by the liver and causes the blood to become acidic and needs to be treated immediately.

Diabetes-related ketoacidosis (DKA) is a potentially fatal condition that affects diabetics. It happens when the body begins breaking down fat at an abnormally fast rate. The fat is converted by the liver into a fuel called ketones, which causes the blood to become acidic.

Diabetic ketoacidosis symptoms frequently appear suddenly, sometimes within 24 hours. High blood sugar levels and high ketone levels in urine are some of the first signs for DKA.

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Answer:

A simple mix of baking soda, kosher salt, and dish soap

Explanation:

I  don't know why you would need to know this but the stuff mentioned above should get rid of the grease

Answer:

Sample Response for Edge2021: Ren should use a cleaning product that contains a base. This is because bases readily react with lipids, the kind of compound that makes up grease. A base would break down the grease, forming soap, which would then easily wash away.

Explanation:

Answer:

\(M_{base}=6M\)

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to realize this is a question about titration, which base solved by knowing that the HCl reacts with the NaOH in a 1:1 mole ratio, and therefore, we can write the following:

\(M_{acid}V_{acid}=M_{base}V_{base}\)

Thus, we solve for the molarity of the base, NaOH, as shown below:

\(M_{base}=\frac{M_{acid}V_{acid}}{V_{base}} \\\\M_{base}=\frac{3L*2M}{1.00L}\\\\M_{base}=6M\)

Regards!

The pressure of oxygen is 1 Ka

Partial pressure is the pressure that a gas would exert if it occupied the same volume as a mixture of gases, but alone. In other words, it is the pressure that a gas contributes to the total pressure of a mixture of gases.

The partial pressure of a gas can be calculated using the following equation:

Partial pressure = Total pressure x mole fraction

where the mole fraction is the fraction of the total number of moles of gas that is made up by the particular gas of interest.

Let total pressure = PA + PB + PC

Then the pressure of the oxygen = 74 - (54 + 19)

= 1 Ka

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Answer:

In thin-layer chromatography, the retention factor (Rf) is used to compare and help identify compounds. The Rf value of a compound is equal to the distance traveled by the compound divided by the distance traveled by the solvent front (both measured from the origin).

Explanation:

a) E = P × t

E = 750 × 1 s = 750 J

b) E = P × t

E = 750 × 3s = 2250 J

c) E = P × t

1500 = 750 × t

t = 1500/750

t = 2 s

The temperature in the chromosphere varies between about 4000 K at the bottom (the so-called temperature minimum) and 8000 K at the top (6700 and 14,000 degrees F, 3700 and 7700 degrees C), so in this layer (and higher layers) it actually gets hotter if you go further away from the Sun

Answer:

Reaction 1: -450 kJ/mol

Reaction 2: -81 kJ/mol

Explanation:

These were the correct answers on Edge, 2022. Hope it helps!

Answer:

-450 and -81 are correct

Explanation:

edge 2022

Answer: The final pressure inside the tank is 8.41 kPa.

Explanation: We can use the combined gas law to solve this problem, which relates the pressure, volume, and temperature of a gas:

(P1V1)/T1 = (P2V2)/T2

where P1, V1, and T1 are the initial pressure, volume, and temperature, respectively, and P2, V2, and T2 are the final pressure, volume, and temperature, respectively.

We are given P1 = 25.0 kPa, T1 = -50 C = 223 K, and V1 is unknown. We also know that the temperature decreases by a factor of three, so T2 = T1/3 = 223/3 K.

To find V2, we need to assume that the steel container is rigid and its volume remains constant. Therefore, V1 = V2, and we can cancel out the volume from the equation:

P1/T1 = P2/T2

Substituting the values, we get:

P2 = P1 * T2 / T1 = 25.0 * (223/3) / 223 = 8.41 kPa

Therefore, the final pressure inside the tank is 8.41 kPa.

Answer:

So if pressure of a gas is increased by 25%, the volume of a gas is decreased by 25%.

Explanation: