Question 12 of 35
Which statement is a scientific theory?
A. All living things are made of cells.
B. Squirrels are probably eating the peaches on the tree.
C. The force exerted by an object is equal to its mass times its
acceleration.
O D. If plants are given more fertilizer, they will grow taller.
SUBMIT
Plz help no links plz

If 10 moles of P4S3 were used, the mass of P4O6 produced would be 2838.8 grams.

To determine the number of grams of P4O6 produced from 10 moles of P4S3, we need to use the balanced chemical equation and the molar masses of the compounds involved.The balanced equation for the reaction between P4S3 and oxygen to produce P4O6 is:

P4S3 + 8 O2 → P4O6 + 6 SO2

From the balanced equation, we can see that the molar ratio between P4S3 and P4O6 is 1:1. This means that for every 1 mole of P4S3 consumed, 1 mole of P4O6 is produced.The molar mass of P4S3 is 220.25 g/mol, and the molar mass of P4O6 is 283.88 g/mol.

To calculate the mass of P4O6 produced, we can use the following equation:

Mass of P4O6 = Moles of P4O6 × Molar mass of P4O6

Since the molar ratio between P4S3 and P4O6 is 1:1, the number of moles of P4O6 produced is also 10 moles.

Mass of P4O6 = 10 moles × 283.88 g/mol = 2838.8 grams

for such more questions on mass

https://brainly.com/question/24191825

#SPJ8

The total charge on the atom is +1 and the correct option is option 3.

According to the Bohr Atomic model, a small positively charged nucleus is surrounded by revolving negatively charged electrons in fixed orbits.

He concluded that electron will have more energy if it is located away from the nucleus whereas electrons will have less energy if it located near the nucleus.

In a neutral atom, the number of protons is equal to the number of electrons.

Since, this atom has 11 protons and 10 electrons, thus there is one extra protons which gives it a +1 charge.

Therefore, the total charge on the atom is +1 and the correct option is option 3.

Learn more about Bohr Atomic Model, here:

https://brainly.com/question/11872378

#SPJ1

Answer:

C

Explanation:

I think its correct because I think c is the right answer

Polar molecules with small nonpolar regions (e.g. acetic acid) readily form micelles, is False.

Polar molecules with small nonpolar regions, such as acetic acid, do not readily form micelles.

Micelles are formed by the aggregation of amphiphilic molecules, which have both polar and nonpolar regions.

In micelle formation, the hydrophobic (nonpolar) regions of the amphiphilic molecules cluster together to minimize contact with water, while the hydrophilic (polar) regions remain exposed to the surrounding aqueous environment.

Micelles are structures that form in certain solutions, particularly when amphiphilic molecules are present.

Amphiphilic molecules have distinct polar and nonpolar regions within their structure. The polar region is attracted to water (hydrophilic), while the nonpolar region repels water (hydrophobic).

Acetic acid is a polar molecule, but it does not possess a significant nonpolar region. Therefore, it does not have the necessary characteristics to form micelles.

Micelle formation typically occurs with molecules that have a larger nonpolar region compared to the polar region, allowing them to organize into micellar structures in aqueous solutions.

To learn more about  Polar molecules , refer below:

https://brainly.com/question/29224615

#SPJ11

Answer:

1.76g of N

Explanation:

5.04g x 1mol/16mol x 2mol/5mol x 14.01g/1mol = 1.76g

The original volume of HBr that was titrated can be calculated as the ratio of the moles of HBr to its concentration.

To determine the original volume of HBr that was titrated, we can use the concept of stoichiometry and the equation balanced for the neutralization reaction between HBr and KOH.

The balanced equation is:

HBr + KOH → KBr + H₂O

From the balanced equation, we can see that the stoichiometric ratio between HBr and KOH is 1:1. This means that for every mole of HBr, we need an equal number of moles of KOH to complete neutralization.

First, let's determine the moles of KOH used in the titration:

Moles of KOH = 0.500 M × 0.075 L = 0.0375 mol

Since the stoichiometric ratio is 1:1, this also represents the number of moles of HBr that were neutralized.

Now, we can calculate the original volume of HBr using the concentration of the unknown solution:

Moles of HBr = 0.0375 mol

Concentration of HBr = unknown (let's assume it is C mol/L)

Volume of HBr = Moles of HBr / Concentration of HBr = 0.0375 mol / C mol/L

For more such questions on volume

https://brainly.com/question/14197390

#SPJ11

The temperature at which 4 moles of hydrogen gas would exert a pressure of 256 KPa is 431.4 K

The temperature of the gas can be obtained by using the ideal gas equation as illustrated below:

PV = nRT

Divide both side by nR

T = PV / nR

T = (2.53 × 56) / (4 × 0.0821)

T = 431.4 K

Learn more about ideal gas equation:

https://brainly.com/question/4147359

The tensile stress required to fail a tensile coupon that has a 0.5 mm crack on one side is about 14.35 MPa.

Polymethyl methacrylate (PMMA) is a transparent thermoplastic often used as a lightweight or shatter-resistant alternative to glass. It is also used in casting, molding, and extrusion. The tensile strength of PMMA is roughly 65 MPa, but this value changes when a defect is present. The stress required to cause failure can be calculated using the single edge notch plate model to calculate the geometric factor Y.

The fracture toughness of PMMA is 1 MPa m¹/2, and the crack length is 0.5 mm. 12.5 mm is the width of the specimen.For a tensile coupon, the tensile stress required to fail it with a 0.5 mm crack on one side is calculated using the following formula:Stress = (K IC / Y √(πa)) × (b / W)where KIC is the fracture toughness, Y is the geometric factor, a is the crack length, b is the specimen width, and W is the specimen width. For a PMMA coupon with a 0.5 mm crack, a is 0.5/2 = 0.25 mm. Y = 1.12, according to the single edge notch plate model. Substituting the given values, the stress required to fail the coupon is:Stress = (1 MPa m¹/² / 1.12 √(π x 0.25 mm)) × (12.5 mm / 12.5 mm)≈ 14.35 MPa.

To know more about methacrylate visit :

https://brainly.com/question/32492486

#SPJ11

Answer:

Chemical change​

Explanation:

Usually when something is left for a while unused and not cared for it begins to have a chemical change and this chemical change shows rust.

Answer:

Hydrogen is a substance because it has mass and combined with other molecules it can make another substance such as water.

Explanation:

Answer:

A thermodynamic quantity equivalent to the capacity of a system to do work.

Explanation:

We need 9.05 mL of the 0.348 M hydroiodic acid solution to neutralize 13.2 mL of the 0.119 M barium hydroxide solution.

To solve this problem, we will use the balanced chemical equation for the reaction between hydroiodic acid (HI) and barium hydroxide (Ba(OH)2):
2HI + Ba(OH)2 → BaI2 + 2H2O
We can see from this equation that two moles of hydroiodic acid are required to neutralize one mole of barium hydroxide. Therefore, we need to calculate the number of moles of barium hydroxide present in the 13.2 mL of 0.119 M solution:
moles of Ba(OH)2 = volume (in L) x concentration (in mol/L)
moles of Ba(OH)2 = 13.2 mL x (1 L/1000 mL) x 0.119 mol/L
moles of Ba(OH)2 = 0.00157 mol
Since two moles of hydroiodic acid are required to neutralize one mole of barium hydroxide, we need twice as many moles of hydroiodic acid as moles of barium hydroxide:
moles of HI = 2 x moles of Ba(OH)2
moles of HI = 2 x 0.00157 mol
moles of HI = 0.00314 mol
Finally, we can use the concentration of the hydroiodic acid solution to calculate the volume required:
moles of HI = volume (in L) x concentration (in mol/L)
volume (in L) = moles of HI / concentration (in mol/L)
volume (in L) = 0.00314 mol / 0.348 mol/L
volume (in L) = 0.00905 L
For  more such questions on hydroiodic acid

https://brainly.com/question/29593791

#SPJ11

Answer:

5.12x10¹¹ millimeters

Explanation:

Milli is a prefix used in science and engineering to decribe the number as the exponent x10⁻³. In the prefix kilo, the number is at the exponent x10³.

5.12x10⁵ kilometers are:

5.12x10⁵ kilometers * (1000m / 1km) = 5.12x10⁸ meters

5.12x10² meters * (1m / 1000millimeters) = 5.12x10¹¹ millimeters

Explanation:

T = 409.5 K, P = 1.50 atm: V = 22.4 L The ideal gas law is: PV = nRT where. P = pressure. V = volume n = number of moles.

Answer:

See explanation

Explanation:

You see, we must cast our minds back to Charles' law. Charles' law gives the relationship between the volume of a gas and temperature of the gas.

Now, Micheal left the balloon outside at a particular temperature and volume the previous night. Overnight, the temperature dropped significantly and so must the volume of the gas in the balloon!

Remember that Charles' law states that, the volume of a given mass of gas is directly proportional to its absolute temperature at constant pressure. Since the pressure was held constant, the drop in the volume of gas in the balloon can be accounted for by the drop in temperature overnight.

 we will measure the amount of lithium ion, Li+, present in 0.4 M Li2HPO4. This is attainable as follows: 1 mole of Li2HPO4 resulted in 2 moles of product in the equation for balance above.

What is the purpose of lithium?

Although its activities are unknown, trace levels of lithium are found in biological systems. Lithium salts have shown potential for the treatment for mental illnesses including bipolar disorder as an antidepressant and mood stabilizer. The lithium family, named for its main element, is another name for the alkali metals.

A lithium battery is what?

The most effective of them allows migration of a lithium cation, Li +, between the anode and the cathode, such as LiCoO 2, using a conducting polymer without a solvent. Cell phones, laptops, and other electronics frequently use smaller rechargeable lithium batteries.

To know more about lithium visit:

https://brainly.com/question/1439744

#SPJ1

The organization that currently serves as the gold standard for comparing hospital performance on national standards of safety, quality, and efficiency, while promoting transparency and easy access to healthcare information, is The Joint Commission (TJC).

The Joint Commission (TJC) is an independent, non-profit organization that accredits and certifies healthcare organizations and programs in the United States. It sets rigorous standards for healthcare quality and safety and conducts regular evaluations to ensure compliance. TJC evaluates hospitals and healthcare facilities based on a wide range of criteria, including patient safety, infection control, medication management, clinical outcomes, and patient experience.

TJC's accreditation and certification programs are highly regarded and widely recognized as indicators of a hospital's commitment to delivering high-quality care. By adhering to TJC's standards, hospitals demonstrate their dedication to meeting national benchmarks for safety, quality, and efficiency. This allows patients, healthcare providers, and other stakeholders to have confidence in a hospital's performance and compare it to established standards.

Learn more about  Joint Commission here:

https://brainly.com/question/30326335

#SPJ11

The amount of heat per unit mass needed to raise the temperature by one degree Celsius is known as the specific heat.

Thus, The formula below, where c is the specific heat, is typically used to explain the relationship between heat and temperature change. If a phase shift occurs, the relationship is invalid because the temperature is unaffected by the heat added or lost during a phase transition.

Water has the highest specific heat of any common substance at 1 calorie/gram °C = 4.186 joule/gram °C. Water thus plays a crucial part in controlling temperature.

Water has a far higher specific heat per gram than a metal does. Most of the time, comparing the molar specific temperatures of different substances makes more sense.

Thus, The amount of heat per unit mass needed to raise the temperature by one degree Celsius is known as the specific heat.

Learn more about Heat, refer to the link:

https://brainly.com/question/1429452

#SPJ1

Colloids are particles that measure between 1 and 1000 nanometers in size and scatter light. They are relatively stable particles that remain suspended in a solvent and do not settle over time.

Because of their small size, colloids have a large surface area, which is a key factor in their reactivity with ions, including cations.The attraction of ions towards a colloid surface is based on their size, charge, and concentration. The charge of a cation plays a vital role in the interaction of a colloid's surface. This is because a colloid's surface carries an opposite charge to that of the cation.

Small cations have a higher charge density than larger ones, which means they are attracted more strongly to colloid surfaces.The high charge density of small cations can interact with the colloid's surface at a closer range than large cations. Because of their size, large cations cannot come as close to the colloid's surface as small cations. Hence, small cations are attracted to colloid surfaces more strongly than large cations.As a result, smaller cations are more attracted to the surface of the colloids than larger ones. This suggests that the stability of colloidal systems is affected by the size of the cation involved.

To know more about Colloids visit;-

https://brainly.com/question/30560048

#SPJ11

Energy cannot be created nor destroyed, but it changes from one form to another. Hence, option C is correct.

Energy is the ability to do work.

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time.

This law means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.

Hence, option C is correct.

Learn more about energy here:

https://brainly.com/question/1932868

#SPJ1

To calculate the time it takes to recharge the battery, we need to use the concept of Faraday's laws of electrolysis.

Faraday's second law states that the amount of substance deposited or liberated at an electrode during electrolysis is directly proportional to the quantity of electricity passed through it.
First, let's find the number of moles of pb(s) consumed during discharge. We can use the molecular weight of pb to convert grams to moles:

1.00 g Pb x (1 mol Pb / 207.2 g Pb) = 0.004825 mol Pb.
Since 1.36 A of current flows through the battery during charging, we can calculate the number of Coulombs (C) of charge passed through the battery per second using the equation: Q = I * t, where Q is the charge in Coulombs and I is the current in Amperes. Thus, Q = (1.36 A) * (1 s) = 1.36 C.
Now, let's find the number of moles of pbso4(s) formed during discharge. Each mole of pb(s) consumes two moles of electrons to convert to pbso4(s). Therefore, the number of moles of pbso4(s) formed is equal to twice the number of moles of pb(s) consumed: 2 * 0.004825 mol Pb = 0.00965 mol PbSO4.
To calculate the time required for recharging, we divide the quantity of electricity passed (1.36 C) by the number of Coulombs required to produce 1 mol of pbso4(s). This can be calculated using Faraday's constant, F = 96485 C/mol. Thus, t = Q / (F * n), where t is the time in seconds, Q is the charge in Coulombs, F is Faraday's constant, and n is the number of moles of pbso4(s) formed.
t = (1.36 C) / (96485 C/mol * 0.00965 mol)

= 0.1456 s.
Finally, we convert the time to minutes by multiplying by 60 seconds per minute:

t = 0.1456 s * (1 min / 60 s)

= 0.00243 minutes.
Therefore, it will take approximately 0.00243 minutes (or about 0.146 seconds) to recharge the battery.

To know more about electricity  visit :

brainly.com/question/33513737

#SPJ11

To calculate the time it will take to recharge the battery, we need to use the concept of Faraday's law of electrolysis.

First, let's find the number of moles of PbSO4(s) that is formed by the consumption of 1.00 g of Pb(s) at the anode. To do this, we divide the mass of Pb(s) by its molar mass:

1.00 g Pb / 207.2 g/mol = 0.00482 mol Pb

Next, we can use the stoichiometry of the reaction to find the number of moles of electrons transferred during the conversion of PbSO4(s) back to Pb(s). The balanced equation shows that 2 moles of electrons are transferred for every 1 mole of PbSO4(s) formed:

0.00482 mol Pb * 2 mol e-/1 mol PbSO4 = 0.00964 mol e-

Now, we can use Faraday's law to calculate the total charge (Q) required to convert PbSO4(s) back to Pb(s):

Q = n * F

where n is the number of moles of electrons transferred and F is Faraday's constant (96485 C/mol).

Q = 0.00964 mol e- * 96485 C/mol = 932.194 C

Finally, we can calculate the time (t) required to recharge the battery using the equation:

t = Q / I

where I is the current produced by the alternator (1.36 A).

t = 932.194 C / 1.36 A = 685.15 s

To convert seconds to minutes, we divide by 60:

685.15 s / 60 s/min = 11.419 min

Rounded to three decimal places, it will take approximately 11.419 minutes to recharge the battery.

Learn more about Solution here:

https://brainly.com/question/28850343

#SPJ11

The name given to the accumulation of acid-forming particles on a surface is acid deposition. This refers to the deposition of acidic substances, such as sulfur dioxide (SO2) and nitrogen oxides (NOx), onto the surface of objects or buildings. These substances can come from natural sources, such as volcanoes, but are often the result of human activities, such as burning fossil fuels.

Acid deposition can have harmful effects on the environment, including damage to forests, crops, and aquatic ecosystems. It can also have negative effects on human health, such as respiratory problems and cardiovascular disease. Efforts to reduce acid deposition include the use of cleaner energy sources and the implementation of emissions regulations.
Acid deposition occurs when these particles are emitted into the atmosphere by various sources, like fossil fuel combustion or industrial processes, and then return to the Earth's surface through rain, snow, fog, or dry deposition. The resulting acidic environment can cause damage to ecosystems, infrastructure, and human health. To mitigate this issue, efforts are being made to reduce emissions and implement more sustainable practices.

Learn more about acid here : brainly.com/question/14072179

#SPJ11

Answer:

500

Explanation:

The turbine inlet temperature of the Rankine cycle using 134a as the working fluid will be approximately 175°C. The thermal efficiency of the cycle can be calculated using the Carnot efficiency equation, which is equal to 1 - (condenser temperature/boiler temperature). In this case, the thermal efficiency is approximately 0.912, or 91.2 percent.

Here, correct answer will be

This means that 91.2 percent of the energy supplied to the boiler is converted to work by the turbine, while the remaining 8.8 percent is lost due to the irreversibility's of the cycle. This is relatively high efficiency for a simple Rankine cycle, as the efficiency of the turbine and the condenser are assumed to be equal to 100 percent.

The quality of the mixture at the turbine exit indicates that most of the vapor has already been condensed, meaning that the cycle is operating at a higher efficiency than a similar cycle operating with a lower quality mixture.

Know more about Rankine cycle :-

https://brainly.com/question/28878476#

#SPJ11

The statements highlight the directional dependency of pressure, the significance of pressure and viscous forces, the negligible contributions of inertia and gravity, and the assumption of no flow in the normal direction (except in cases of lubricant leakage).

The given statements are related to a specific context, possibly discussing fluid dynamics or mechanics. Let's break them down and summarize the key points:

1. Pressure is only dependent on direction, not on the transverse component (Op/Oy = 0). This suggests that pressure variations occur primarily along a particular direction and are unaffected by transverse components.

2. The dominant effects in the system are pressure and viscous forces. Other factors like inertia and gravity can be considered negligible compared to these two forces.

3. Flow in the direction normal to the diagram plane is assumed to be absent. However, this assumption may not hold in cases where there is continuous leakage of lubricant in the direction of the shaft, which would require considering lubricant injection near the bearing surface.

Learn more About pressure from the given link

https://brainly.com/question/28012687

#SPJ11

Answer:

I think it would be Contagious.

Explanation:

You get it from another person or from food and thats contagious.

Here is the structure for (E)-3-phenyl-2-propen-1-ol:

         H

         |

  H ─ C ─ C ─ C ─ OH

       |   ||

       |   |Ph

       |   |

       H   CH3

In the structure, "Ph" represents a phenyl group (C6H5) attached to the second carbon atom. The double bond between the second and third carbon atoms indicates the E configuration, meaning the higher priority groups (in this case, the phenyl group and the hydrogen atom) are on opposite sides of the double bond.

The -OH group represents an alcohol functional group attached to the first carbon atom.

Learn more about phenyl here:

https://brainly.com/question/9865744

#SPJ11

Polar covalent bonds are characterized by a partial positive charge on one atom and a partial negative charge on the other. Option a is correct.

In a polar covalent bond, the electrons are not shared equally between the atoms in the bond. Instead, one atom attracts the shared electrons more strongly than the other, resulting in a partial negative charge on the more electronegative atom and a partial positive charge on the less electronegative atom.

This creates a separation of charges across the bond, making it polar. The magnitude of the charge separation depends on the difference in electronegativity between the atoms. Hence option a is correct.

To know more about covalent bond, here

brainly.com/question/13915235

#SPJ4

Answer:

\(\boxed {\tt D. \ Hydrogen}\)

Explanation:

An element has a uniform composition, cannot be broken down by chemical change, every atom has the same atomic number, and can be found on the Periodic Table.

Water is made of hydrogen and oxygen atoms (H₂O) so it is not an element.

Table salt is made of sodium and chloride atoms (NaCl) so it is not an element.

Iron oxide is made up of iron and oxygen atoms, so it is not an element.

Hydrogen is an element. It can be found on the Periodic Table as element H.

The correct answer is D. Hydrogen