Calculate the maximum mass of potassium sulfate, K2SO4, that could be formed when 4.9 g of sulfuric acid reacts with excess potassium hydroxide.

H2SO4 + 2KOH → K2SO4 + 2H2O

Answer:

-655 kj/mol

Explanation:

Answer:

look at pic

Explanation:

.kjkj;lkm'

The molecular geometry (form) of CCl4 SF6 is identical to the configuration of the electron domains in a VSEPR.

VSEPR distinguishes between molecular geometry, which defines how the atoms in a molecule are ordered, and electron group geometry, which expresses how electron groups (bonds and nonbonding electron pairs) are arranged.

Chemistry frequently employs the valence-shell electron-pair repulsion (VSEPR) model to foretell the three-dimensional organization, or geometry, of molecules. This model accounts for the repulsion between electron pair to estimate the structure of a molecule.

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The maximum production rate of acetyl-CoA under condition 1 is closest to 1 micromole/sec.

The correct option is A.

The maximum production rate of acetyl-CoA under condition 1 is determined from the reaction conditions.

For Condition 1:

The maximum concentration of acetyl-CoA is 60 micromoles

The time taken to reach the maximum concentration of acetyl-CoA is 60 seconds.

The maximum production rate of acetyl-CoA under condition 1 can be calculated by dividing the maximum concentration of acetyl-CoA (60 micromoles) by the time taken (60 seconds):

Maximum production rate = 60 micromoles / 60 seconds = 1 micromole/second

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Answer:

6.     True or False. The arrow labeled C represents a transfer of chemical energy to mechanical energy. Explain why this is true or false.

a.     This is __False_____ because: Factory uses Mechanical energy with is converted to chemical energy.

7.     True or False. The arrow labeled A represents a transfer of solar energy to chemical energy. Explain why this is true or false.

a.     This is __True_____ because:  Solar energy from the sun is first, then a chemical reaction makes food for the plant.

Explanation:

Change up the spelling, put it in your own words, I didn't use advanced grammar, don't copy and paste, don't get a 0.

Answer:

A) 4 and 3

Explanation:

You don't count the scientific notations in his problem sine they are only trailing zeros which they don't count as sig figs so look at the original numbers. Remember that zeros after decimal points or in-between natural numbers count with that said 2.020 has 4 sig figs and 5.00 has 3 sig figs

Answer:

It does not contain free mobile ions

Explanation:

Solid sodium chloride does not conduct electricity because it does not contain free mobile ions.

In solid state ions are arranged into crystal lattice and will not conduct a current of electricity.

169.71 minutes

Given

Rate of diffused of Hydrogen=5 gm/30 min

Required

The time required for SO₂

Solution

Graham's law: the rate of effusion of a gas is inversely proportional to the square root of its molar masses or  

the effusion rates of two gases = the square root of the inverse of their molar masses:  

\(\tt \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }\)

r₁=5gm/30 min

M₁=molar weight of H₂-hydrogen= 2 g/mol

M₂=molar weight of SO₂-sulfur dioxide= 64 g/mol

\(\tt \dfrac{5/30}{r_2}=\sqrt{\dfrac{64}{2} }\\\\\dfrac{5/30}{r_2}=4\sqrt{2}\\\\\dfrac{5}{30}=r_2.4\sqrt{2}\\\\r_2=\dfrac{5}{30\times 4\sqrt{2} }=\dfrac{\sqrt{2} }{48}\)

the time required (for the same amount=5 gm) :

\(\tt \dfrac{5}{x}=\dfrac{\sqrt{2} }{48}\rightarrow x=120\sqrt{2}=169.71 minute\)

The irreversibility in the process can be calculated as the difference between the actual entropy change and the reversible entropy change at the final equilibrium temperature: Irreversibility = ΔS_actual - R * ln(V_f/V_i) - cp * ln(T_f/T_i)

To determine the irreversibility in the process, we can use the concept of entropy change. The irreversibility in a process can be calculated as the difference between the actual entropy change and the reversible entropy change.

The reversible entropy change can be calculated using the ideal gas equation:

ΔS_rev = R * ln(V_f/V_i) + cp * ln(T_f/T_i)

where:

ΔS_rev is the reversible entropy change

R is the specific gas constant (8.314 J/mol·K)

V_f and V_i are the final and initial volumes, respectively

T_f and T_i are the final and initial temperatures, respectively

cp is the specific heat capacity at constant pressure

Given:

Volume of each region = 500 liters = 0.5 m^3

Initial pressure in region 1 = 1 MPa = 1,000,000 Pa

Initial temperature in region 1 = 350ºC = 623 K

Initial pressure in region 2 = 4 MPa = 4,000,000 Pa

Initial temperature in region 2 = 150ºC = 423 K

Final temperature in equilibrium = 100ºC = 373 K

Temperature of the medium = 25ºC = 298 K

First, let's calculate the reversible entropy change for each region using the given equations:

ΔS_rev_1 = R * ln(V_f/V_i) + cp * ln(T_f/T_i)

ΔS_rev_2 = R * ln(V_f/V_i) + cp * ln(T_f/T_i)

Substituting the given values and using the specific heat capacity of hydrogen (cp = 14.307 J/mol·K), we can calculate ΔS_rev_1 and ΔS_rev_2.

Next, we need to calculate the actual entropy change for the process, which is the sum of the reversible entropy changes of both regions:

ΔS_actual = ΔS_rev_1 + ΔS_rev_2

Finally, the irreversibility in the process can be calculated as the difference between the actual entropy change and the reversible entropy change at the final equilibrium temperature:

Irreversibility = ΔS_actual - R * ln(V_f/V_i) - cp * ln(T_f/T_i)

Substituting the calculated values, we can determine the irreversibility in kW.

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Answer:

5/8 M

Explanation:

NaOH + HCl ====> NaCl + H2O

in 25 mL of 0.5M acid, we have 1/80 Mol of HCl

it mean we must have 1/80 Mol of NaOH.

20 mL = 1/50 L

(1/80)Mol / (1/50)L = 5/8 M

Answer:

Birds and marine mammals are generally considered to be more vulnerable to oil spills because they are more likely to come into direct contact with the oil, either through exposure to the oil on the surface of the water or through ingestion of oil-contaminated prey. Birds may become coated in oil when they land on the water's surface to feed or rest, and marine mammals may be exposed to oil through inhalation or ingestion of contaminated water or prey.

Explanation:

Answer:

(a) (i) 44

(ii) 88 and 36

(iii) 2.2

(b)H₂–C=C–H₂

The correct answer is: 1

What is anti-Markovnikov addition?

Anti-Markovnikov addition is a type of addition reaction in organic chemistry where an electrophile adds to the carbon atom of a double bond in a way that the less substituted carbon becomes the site of attachment for the electrophile. This is in contrast to the Markovnikov addition, where the more substituted carbon of the double bond is the site of attachment.

The reaction of 2-methylpent-2-ene with HBr in the presence of peroxides undergoes a radical addition reaction known as the anti-Markovnikov addition. This reaction leads to the formation of a single product. Therefore, the correct answer is: 1

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Answer:

The solubility of gases in a liquid or another gas is a measure of the extent to which the gas can dissolve in the liquid or gas. It is usually expressed as the amount of gas that can dissolve in a given volume of liquid or gas at a specific temperature and pressure. The solubility of gases in a mixture, such as the air in your classroom, can vary depending on the specific gases present and their relative proportions.

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Explanation:

When reactants are mixed and heated in an esterification reaction, a liquid product is formed along with other byproducts.

When reactants are mixed and heated in an esterification reaction, a liquid product is formed along with other byproducts. Esterification is a chemical reaction between an alcohol and a carboxylic acid, often catalyzed by an acid catalyst such as sulfuric acid. The reaction produces an ester and water as byproducts.

During the reaction, the alcohol and carboxylic acid are mixed together and heated. The acid catalyst is added to speed up the reaction. As the reaction proceeds, the ester and water are formed. The ester is a liquid, while water is a gas at the reaction temperature.

The liquid product that collects in the side of the apparatus is the ester that is being produced. This liquid can be separated from the reaction mixture and purified using various techniques, such as distillation or extraction. The byproduct water can also be removed by distillation or other means. The ester that is produced can have a wide range of applications, such as in the production of perfumes, flavorings, and plastics.

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Answer:

B holding together molecules in a material

Explanation:

Intermolecular forces are primarily responsible for holding together molecules in a material due to the fact that they are interactive forces between molecules

Answer:

bnsjsbbakakaisbsbwnsjznss

Explanation:

cnsjzjsnsnsjs ssnsnsnzksmnznnzna

The principle of faunal succession is a key concept in the study of prehistoric life and the age of sedimentary rocks. It is based on the idea that the fossilized remains of different species of animals and plants found in sedimentary rocks can be used to infer the relative age of the rocks and the conditions that existed when they were formed.

The principle of faunal succession states that over time, the species of animals and plants that lived in a particular area changed and evolved. As a result, the fossilized remains of different species found in sedimentary rocks can be used to infer the relative age of the rocks.

This principle is based on the idea that the fossil record is a record of the evolution of life on Earth. In addition, the principle of faunal succession also provides insight into the ancient environment and climate. For example, the presence of certain types of fossils, such as coral reefs or tropical plants, may indicate that the area was once a warm, shallow sea.

In all, the principle of faunal succession is a powerful tool that connects prehistoric life to the age of sedimentary rocks. By studying the fossilized remains of different species found in sedimentary rocks, scientists can infer the relative age of the rocks and the conditions that existed when they were formed.

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Answer:

1.33 x 10^-3 mol H2

Explanation:

? mol H2 = 8.00 x 1020^20 molecules H2 x  1 mol H2/6.02 ! 1023 molecules H2 = 1.33 x 10^-3 mol H2

Hope that helps!

8.00 x 10²⁰ molecules of H₂ present in 1.33 x 10⁻³ mole of H₂.

Mole is used to define the amount of quantity of any substance and 1 mole equals to the 6.023 × 10²³ elementary entities or atoms in it.

According to the question:

1 mole of H₂ = 6.023 × 10²³ molecules of H₂

or 1 molecules of H₂ = 1 mole of H₂ / 6.023 × 10²³ molecules of H₂

To convert 8.00 x 10²⁰ molecules into mole we calculate as follow:

x mole of H₂ = (8.00 x 10²⁰ molecules x  1 mole of H₂) / 6.023 × 10²³ molecules

x mole = 1.33 x 10⁻³ mole

Hence, 1.33 x 10⁻³ mole of H₂ consist 8.00 x 10²⁰ molecules.

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Answer:

Magnesium

Iron

Copper

Lead

Silver

Explanation:

The energy of one quantum of orange light, given that it has a frequency of 4.8×10¹⁴ s⁻¹ is 3.18×10⁻¹⁹ J

We know that energy and frequency are related according to the following equation:

Energy (E) = Planck's constant (h) × frequency (f)

E = hf

Using the above formula, we can obtain the energy of one quantum of the orange light. Details below:

Energy (E) = Planck's constant (h) × frequency (f)

E = hf

E = 6.626×10⁻³⁴ × 4.8×10¹⁴

E = 3.18×10⁻¹⁹ J

Thus, the energy is 3.18×10⁻¹⁹ J

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Answer:

10.58km

The formula needed to calculate the amount of wire used is expressed as:

W is the weight of wire used to wind a magnet

wg is the weight of wire per km

Given the following parameters:

Substitute the given parameters into the formula to have:

Hence the length of wire used is 10.58km

Answer:

This is false.

Explanation:

This statement directly opposes the first law of thermodynamics which states that energy can neither be created nor destroyed, but can transfer from one source to another.

Answer:

ions are attracted to the anode The volume of hydrogen given off is twice the volume of oxygen given of

Explanation:

Answer:

gas production

Explanation:

Answer:

gas formation

Explanation:

frothy bubbles produced by carbon dioxide gas are a sign that a chemical reaction has occurred when a based is mix with acid.

Answer:

Explanation:

The distance covered by an object given it's velocity and time taken can be found by using the formula

distance = velocity × time

From the question we have

distance = 75 × 7.5

We have the final answer as

Hope this helps you

Here you go hope this helps :))

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A. Ammonia is the limiting reactant.

B. Theoretical yield of urea is 215.3 kg.

C. Percent yield for the reaction is 86.0%

D. The mass of the excess carbon dioxide left is approximately 54.1 kg.

a) To identify the limiting reactant, we should compare the amount of products formed from each reactant. The chemical equation for the formation of urea \((NH_2CONH_2)\) by combining ammonia \((NH_3)\) and carbon dioxide \((CO_2)\) is as follows:

\(2 NH_3 + CO_2 - > NH_2CONH_2 + H_2O\)

The stoichiometry of the balanced equation indicates that the ratio of ammonia to urea is 2:1.

We can find the number of moles for each reactant using the following masses:

Moles of ammonia = 122.0 kg / 17.03 g/mol = 7.17 mol

Moles of carbon dioxide = 211.4 kg / 44.01 g/mol = 4.80 mol

It takes 14.34 moles of ammonia to react completely with the available carbon dioxide because the ratio of ammonia to urea is 2:1. But the amount of ammonia we have is less than we need - only 7.17 mol. As a result, ammonia is the limiting reactant.

b. Based on the limiting reactant, it is possible to calculate the theoretical yield of urea. We can use the moles of ammonia, which is the limiting reactant, to calculate the moles of urea:

Moles of urea = 7.17 mol / 2 = 3.58 mol

We can determine the theoretical yield of urea using the molar mass of urea (60.06 g/mol) as a starting point:

Theoretical yield of urea = 3.58 mol * 60.06 g/mol = 215.3 kg

C. The actual yield (185.1 kg) is calculated by dividing it by the theoretical yield (215.3 kg), then multiplying the result by 100%.

Percent yield = (185.1 kg / 215.3 kg) * 100% = 86.0%

D. We can calculate the amount of non-limiting reactant that has not reacted yet to determine the excess reactant. Since ammonia is the limiting reactant, we must determine how much excess carbon dioxide there is:

Moles of excess carbon dioxide = Moles of carbon dioxide initially - Moles of carbon dioxide used

= 4.80 mol - (7.17 mol / 2) = 1.23 mol

We can determine the mass of excess carbon dioxide using the molar mass of carbon dioxide (44.01 g/mol):

Excess carbon dioxide = 1.23 mol * 44.01 g/mol = 54.1 kg

Therefore, the mass of the excess carbon dioxide left is approximately 54.1 kg.

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Answer:

B

Explanation:

The soap reduced the surface tension behind the boat, causing both water molecules and the boat to be pulled forward, hence option B is correct.

The water molecules are attracted to the surface tension, which reduces the surface tension behind the boat. The boat goes ahead because water molecules tend to travel towards higher surface tension.

Small items will "float" on the surface of a fluid due to surface tension, as long as they cannot pierce and differentiate the top layer of water molecules.

When there is an object on the fluid's surface, the surface that is under tension will act like an elastic membrane.

Therefore, the boat was dragged forward along with the water molecules as the soap decreased the surface tension behind it.

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The predicted mass ratio of synthetic vitamin C synthesized in the laboratory is 6:8:6 for C:H:O, which corresponds to a total mass ratio of 27.

The mass ratio of C : H : O in natural vitamin C found in rose hips is 9:1:12. To predict the mass ratio of synthetic vitamin C synthesized in the laboratory, we need to consider the molecular formula of natural vitamin C, which is C6H8O6.

The molecular formula of synthetic vitamin C is the same as that of natural vitamin C, C6H8O6. This means that the mass ratio of carbon (C) to hydrogen (H) to oxygen (O) in synthetic vitamin C will also be 6:8:6.

In both cases, the total mass ratio remains the same at 27 (9 + 1 + 12 = 22 for natural vitamin C and 6 + 8 + 6 = 20 for synthetic vitamin C). However, the individual ratios within the mass ratio differ due to the different numbers of carbon, hydrogen, and oxygen atoms in the molecules.

It is important to note that the molecular structure and arrangement of atoms in synthetic vitamin C may be identical to natural vitamin C, but slight differences in isotopes or impurities could lead to minor variations in the actual mass ratio.

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