Question 6 of 20 30.00 mL of a H2SO4 solution with an unknown concentration was titrated to a phenolphthalein endpoint with 39.41 mL of a 0.1347 M NaOH solution. What is the concentration of the H2SO4 solution

Answer:

As the axial tilt increases, then the seasonal contrast increases so that winters are colder and summers are warmer in both hemispheres. The northern hemisphere is tipped away from the Sun, producing short days and a low sun angle. What kind of effect does the earth's tilt and subsequent seasons have on our length of daylight (defined as sunrise to sunset). Over the equator, the answer is not much.

Answer: The final volume in the balloon is \(68.818cm^3\)    

Explanation:

Charles' Law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles of gas.

Mathematically,

\(\text{Volume}\propto \text{Temperature}\)

Or,

\(\frac{V_1}{T_1}=\frac{V_2}{T_2}\)   (At constant pressure and number of moles)

\(V_1\) = initial volume = 52000 L

\(V_2\) = final volume = ?

\(T_1\) = initial temperature = \(500^0C=(500+273)K=773 K\)

\(T_2\) =  final temperature = \(750^0C=(750+273)K=1023 K\)

\(\frac{52000}{773}=\frac{V_2}{1023}\)

\(V_2=68818L=68.818ml=68.818cm^3\)       \((1L=1000ml=1000cm^3)\)

Thus final volume in the balloon is \(68.818cm^3\)    

Answer:

Answer:

should be half wich is 750

Explanation:

The activation energy for this reaction is - 55.5 kJ/mol

Calculation,

Given data,

First temperature \(T_{1}\) =  302°C = 302+273 = 575 K

Second temperature \(T_{2}\) =  508°C =  508+273 = 781 K

rate constant at  302°C = 2. 45 × \(10^{-4}\) lit/mol s

rate constant at 508°C =  0. 0965 lit/mol s.

Value of universal gas constant = 8.3145 J/k mol.

Apply Arrhenius equation,

㏒\(K_{1} /K_{2}\) = \(E_{a}/2.203R\) [1/ 575 K - 1/781 K]

㏒2. 45×\(10^{-4}\) lit/mol s/0.0965 lit/mol s = \(E_{a}\) /2.303×8.3145 J/k mol[781-575/575K×781 K]

\(E_{a}\) = - 55.5 kJ/mol

learn more about activation energy ,

https://brainly.com/question/11334504

#SPJ4

The enthalpic term is favorable, while the entropic term is unfavorable for the formation of secondary structure motifs.

In the context of secondary structure motifs like α-helices or β-sheets, the enthalpic term refers to the energy changes associated with the formation of hydrogen bonds and other stabilizing interactions within the motif.

The enthalpic term is generally favorable for the formation of secondary structures since the establishment of these interactions contributes to the stability and structural integrity of the motif.

On the other hand, the entropic term relates to the changes in molecular freedom or disorder upon the formation of secondary structure motifs.

When a protein adopts a specific secondary structure, there is a reduction in conformational flexibility, resulting in a decrease in entropy.

This entropic term is typically unfavorable for the formation of secondary structures since it restricts the range of accessible conformations for the protein.

Overall, the enthalpic term, driven by favorable interactions, promotes the formation of secondary structure motifs, while the entropic term, driven by reduced conformational flexibility, poses an unfavorable contribution to the process.

Learn more about enthalpic term

brainly.com/question/30516012

#SPJ11

Copper(II) sulfate is pale blue (cyan) because it absorbs light in the red region of the spectrum.

Spectrophotometry is the branch of electromagnetic spectroscopy that deals with the quantitative measurement of reflectance or transmission properties of materials as a function of wavelength.

A method of measuring how much light a chemical absorbs by measuring the intensity of light as it passes through a sample solution. The basic principle behind spectrophotometry is that each compound absorbs or transmits light in a specific wavelength range.

Copper(II) sulfate solution appears blue because it actually absorbs red region of spectrum which is a complementary color of blue.

To know more about Spectrophotometry visit:

https://brainly.com/question/24183759

#SPJ4

Answer:

It will produce 44 grams of carbon dioxide

Explanation:

Step 1: Data given

MAss of CaCO3 = 100 grams

Molar mass of CaCO3 = 100.09 g/mol

Mass of CaO produced = 56 grams

Molar mass of CaO = 56.08 g/mol

Step 2: The balanced equation

CaCO3 → CaO + CO2

Step 3: Calculate moles CaCO3

Moles CaCO3 = mass CaCO3 / molar mass CaCO3

Moles CaCO3 = 100 grams / 100.09 g/mol

Moles CaCO3 = 1.00 moles

Step 4: Calculate moles CaO

Moles CaO = 56 grams / 56.08 g/mol

Moles CaO = 1.00 moles

Step 5: Calculate moles CO2

For 1 mol CaCO3 we'll have 1 mol 1 mol CaO and 1 mol CO2

Step 6: Calculate mass CO2

Mass CO2 = moles CO2 * molar mass CO2

Mass CO2 = 1.00 moles * 44.0 g/mol

Mass CO2 = 44 grams

It will produce 44 grams of carbon dioxide

The rate at which the nitrogen dioxide, NO₂ will effuse is 64 mL/s

This states that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass i.e

R ∝ 1/ √M

R₁/R₂ = √(M₂/M₁)

Where

Applying the Graham's law of diffusion equation, we have:

R₁/R₂ = √(M₂/M₁)

82 / R₂ = √(46 / 28)

Cross multiply

82 = R₂√(46 / 28)

Divide both sides by √(46 / 28)

R₂ = 82 /√(46 / 28)

R₂ = 64 mL/s

Thus, nitrogen dioxide, NO₂ will effuse at 64 mL/s

Learn more about Graham's law of diffusion:

https://brainly.com/question/14004529

#SPJ4

The average speed is zero if our frame of reference is the rotation of the Earth because the relative distance with respect to the earth is zero.

Average speed = 0.26 km/hr

total time = 316 minutes

distance = speed * time

                = 8.3 * 5*1/30 = 8.3 *1/6

                = 1.38 km

Average speed = total distance / total time

                             1.38 km / 5.27

                             = 0.26 km/hr

Distance is described to be the importance or length of displacement among positions. observe that the gap between two positions is not the same as the distance traveled between them. Distance traveled is the whole period of the path traveled among positions. Distance traveled isn't a vector.

There are three foremost styles of average: imply, median, and mode. each of these strategies works barely otherwise and frequently results in slightly distinct ordinary values. The suggest is the maximum usually used commonly. To get the mean cost, you add up all of the values and divide this general by means of the variety of values.

Learn more about average speed here:-https://brainly.com/question/4931057

#SPJ4

Answer:

NaOH

Explanation:

Sodium hydroxide is the base in the acid-base reaction as all other acids and sodium chloride is salt and water is neutral.

According to the Arrhenius concept, base is defined as a substance which yields hydroxyl ions on dissociation.These ions react with the hydrogen ions of acids to produce salt in an acid-base reaction.

Bases have a pH higher than seven as they yield hydroxyl ions on dissociation.They are soapy in touch and have a bitter taste.According to the Lowry-Bronsted concept, base is defined as a substance which accepts protons .Base react violently with acids to produce salts .Aqueous solutions of bases can be used to conduct electricity .They can also be used as indicators in acid-base titrations.

They are used in the manufacture of soaps,paper, bleaching powder.Calcium hydroxide ,a base is used to clean sulfur dioxide gas while magnesium hydroxide can be used as an antacid to cure acidity.

Learn more about base,here:

https://brainly.com/question/12445440

#SPJ3

The terrestrial biosphere (land plants and ecosystems) and the ocean are the two carbon cycle components that have essentially the same amount of carbon exchange in gigatons (Gt) per year.

Through activities like photosynthesis, respiration, and carbon uptake/storage, both the terrestrial biosphere and the ocean contribute to the exchange of carbon with the atmosphere.

The movement of carbon between these two parts aids in preserving the equilibrium of carbon in the Earth's system. Therefore, the terrestrial biosphere (land plants and ecosystems) and the ocean are the two carbon cycle components that have essentially the same amount of carbon exchange in gigatons (Gt) per year.

Learn more about carbon cycle, here:

https://brainly.com/question/22741334

#SPJ4

Answer:

45/9 or 5

Explanation:

the oil which relative amount is greater than demand is fuel oil, whose fraction is 45/9

(a) The balanced equation for the given cell notation would be:Sn(s) + 2Ag+(aq) → Sn2+(aq) + 2Ag(s)

(b) The cathode would be Ag+(aq), and Ag(s) would gain electrons to produce Ag atoms.

c)The E cell for the given cell notation can be calculated as follows:E° cell = 0.94 V

We know that the E° cell is the standard cell potential when the concentrations of all the reactants and products are 1 M. We can use the Nernst equation to calculate the cell potential for non-standard conditions.

The Nernst equation is given by:Ecell = E°cell - (0.0592/n)logQ,

where n is the number of electrons involved in the reaction and Q is the reaction quotient.Q can be calculated using the concentrations of the species involved in the reaction.

Here, we have:Q = [Sn2+]/[Ag+]² = 0.022/[2.7]² = 0.003We know that n = 2 (from the balanced equation).Plugging in the values, we get:

Ecell = 0.94 - (0.0592/2)log0.003

Ecell = 0.94 + (0.0592/2)(2.5229)

Ecell = 0.94 - 0.0748Ecell = 0.8652 V(d)

The E° cell is 0.94 V, and the calculated Ecell is 0.8652 V.

Since the calculated Ecell is less than E° cell, the reaction is shifted towards the reactants, as per Le Chatelier's principle.

As the reaction shifts towards the reactants, the concentration of Sn2+ increases while the concentration of Ag+ decreases.

The reaction quotient Q increases and the value inside the log in the Nernst equation becomes smaller, reducing the value of Ecell. Therefore, the calculated value for Ecell makes sense in terms of Le Chatelier's principle.

To know more about cell notation refer here :

https://brainly.com/question/31977987#

#SPJ11

According to the information we can infer that these tools are: P.aspersor, Q. sword, M. manual drill, N. blind. According to the above, these tools are used to build and sprinkle crops.

According to the image we can infer that the different tools are:

On the other hand, the functions of these tools are:

The precautions that we must take with these tools (P) are:

Note: This question is incomplete. Here is the complete information:

Attached image

Learn more about tools in: https://brainly.com/question/31719557

#SPJ1

The balanced reaction of this chemical reaction is as follows :

• As we can see, this is a double-displament reaction

Answer:  A. solid, compound

Explanation:

Because copper sulphate is a compound and it is a blue solid powder

Hope that help :)

Answer: an iceberg

Explanation: the reason for this is because it has much more mass then a hot cup of coffee even the the temputure of coffee is much warmer

Answer:

7.5275 x 10^21

Explanation:

Answer:

\(\boxed {\boxed {\sf 3 \times 10^{21} \ atoms \ Hg}}\)

Explanation:

We are asked to find how many atoms are in 1 gram of mercury.

First, we convert grams to moles. We use the molar mass or the mass of 1 mole of a substance. These values are equivalent to the atomic masses on the Periodic Table, but the units are grams per mole instead of atomic mass units.

Look up mercury's molar mass.

We convert using dimensional analysis, so we create a ratio using the molar mass.

\(\frac { 200.59 \ g \ Hg}{ 1 \ mol \ Hg}\)

We are converting 1 gram of mercury to moles, so we multiply the ratio by this value.

\(1 \ g \ Hg *\frac { 200.59 \ g \ Hg}{ 1 \ mol \ Hg}\)

Flip the ratio so the units of grams of mercury cancel out.

\(1 \ g \ Hg *\frac{ 1 \ mol \ Hg} { 200.59 \ g \ Hg}\)

\(1 *\frac{ 1 \ mol \ Hg} { 200.59}\)

\(\frac{ 1} { 200.59} \ mol \ Hg\)

\(0.004985293385 \ mol \ Hg\)

Next, we convert moles to atoms. We use Avogadro's Number or 6.022 × 10²³. This is the number of particles (atoms, molecules, formula units) in 1 mole of a substance. In this case, the particles are atoms of mercury.

We will use dimensional analysis and set up another ratio.

\(\frac {6.022 \times 10^{23} \ atoms \ Hg}{ 1 \ mol \ Hg}\)

Multiply by the number of moles we calculated.

\(0.004985293385 \ mol \ Hg * \frac {6.022 \times 10^{23} \ atoms \ Hg}{ 1 \ mol \ Hg}\)

The units of moles of mercury cancel.

\(0.004985293385 * \frac {6.022 \times 10^{23} \ atoms \ Hg}{ 1 }\)

\(3.00214368 \times 10^{21} \ atoms \ Hg\)

The original measurement of grams has 1 significant figures, so our answer must have the same. For the number we calculated, that is the ones place. The 0 in the tenths place tells us to leave the 3 in the ones place.

\(3 \times 10^{21} \ atoms \ Hg\)

There are approximately 3×10²¹ atoms of mercury in 1 gram of mercury.

The balance chemical reaction is as below:

4Fe (s) + 3O₂ (g) ⇒ 2Fe₂O₃ (s)

The term balanced chemical equation is defined when the number of the atoms involved in the reactants side is exactly equal to the number of atoms in the products side.

The most important thing about balancing chemical equations is to satisfy the law of conservation of mass, This states that  “the total mass of the products is exactly equal to the total mass of all the reactants”

Thus, The balance chemical reaction is as below:

4Fe (s) + 3O₂ (g) ⇒ 2Fe₂O₃ (s)

To learn more about balance chemical reaction, follow the link;

https://brainly.com/question/30230799

#SPJ1

Answer:

particles in liquids have greater kinetic energy than particles in solids

A magnesium ion, Mg2+, has correct answer is option E) 12 protons and 14 electrons.

The correct answer is option E) 12 protons and 14 electrons. This is because the atomic number of magnesium, which is the number of protons in its nucleus, is 12. When it loses two electrons to become an ion, it still has 12 protons but now only 10 electrons. Therefore, the charge on the ion is 2+ (written as Mg2+). Options A, B, C, and D have incorrect numbers of protons and electrons for a magnesium ion.

Mg2+, an ion of magnesium, contains 12 protons and 14 electrons. This is so because magnesium has 12 protons, or its atomic number, in its nucleus. It still has 12 protons but only 10 electrons when it loses two electrons to become an ion. As a result, the ion has a 2+ charge, represented by the symbol Mg2+. For a magnesium ion, the protons and electrons in Options A, B, C, and D are in the wrong proportions.

To know more about magnesium ion click here:

https://brainly.com/question/1698012

#SPJ11

Answer:

Explanation:Balance equation:

2 FeBr3 + 3 Na2S → Fe2S3 + 6 NaBr

Answer:

Alpha decay

Explanation:

Alpha decay can be blocked with only a sheet of paper.

Extra info : -

In general, alpha particles have a very limited ability to penetrate other materials. In other words, these particles of ionizing radiation can be blocked by a sheet of paper, skin, or even a few inches of air.

Hello there!

Hope this helps. Let me know if you have any questions.

~GracefulGirlie :)

Good luck on your assignment.

The main difference between reactions with aldehydes and acyl chlorides is the reactivity and range of nucleophiles that can be used.

The reactions between aldehydes and nucleophiles are fundamentally different than reactions between acyl chlorides and nucleophiles in several ways. Aldehydes are less reactive than acyl chlorides due to the absence of the electron-withdrawing effect of the chlorine atom in acyl chlorides. Therefore, reactions with aldehydes are typically slower and require more reactive nucleophiles or higher temperatures. Additionally, aldehydes can undergo reduction reactions to form primary alcohols, whereas acyl chlorides cannot. In contrast, reactions with acyl chlorides are much more reactive due to the electron-withdrawing effect of the chlorine atom, resulting in faster reactions and a wider range of nucleophiles that can be used. Additionally, acyl chlorides cannot undergo reduction reactions to form primary alcohols.

Depending on how the atoms are arranged in their chemical structure, aldehydes and ketones can exist in both cyclic and linear forms. Cyclic aldehydes and cyclic ketones are both feasible; cyclic aldehydes like cyclohexanol and cyclic ketones like cyclohexanone are examples of such molecules. Aldehydes and ketones are two types of organic compounds that belong to the class of compounds known as carbonyl compounds.

Learn more about aldehydes here

https://brainly.com/question/30665943

#SPJ11

Therefore, there are approximately 0.1135 moles of sucrose in a can of cola.

Sucrose, also known as table sugar, has the chemical formula \(C_{12}H_{22}O_{11}\). The molar mass of sucrose can be calculated by adding up the atomic masses of each element in the molecule. Carbon, hydrogen, and oxygen are the main elements in sucrose and each have a unique atomic mass. By multiplying the number of atoms of each element by its atomic mass, we get the total molar mass of the molecule, which is 342.34 g/mol. To find the number of moles of sucrose in a sample, we divide the mass of the sample by its molar mass. In this case, 39 g of sucrose represents 0.1135 moles.

\((12*12.01) + (11.16.00) = 342.34 g/mol\)

So the number of moles of sucrose is:

\(\frac{39}{342.34} = 0.1135\)

Learn more about sucrose here

brainly.com/question/28869238

#SPJ4

Answer:

Explanation:

The main reason why California has areas that are colder than Nevada, despite being at similar latitudes, is due to the influence of ocean currents. Specifically, California is impacted by a cold ocean current known as the California Current, which flows southward along the western coast of North America, while Nevada is an inland state without access to any major ocean currents.

The California Current brings cool water from the Gulf of Alaska down the coast, resulting in lower temperatures along the California coast, particularly in the northern regions. In contrast, Nevada has a desert climate with high temperatures and low humidity, due to its inland location and lack of major bodies of water.

So, the correct option would be "Cold ocean currents travel across California." (Option 2).