Explain why it is quantitatively not acceptable to titrate.

Answer/Explanation:

A theory has lots of scientific evidence to back it up. We know this to be true based on lots of different diseases and studies of their spread.

A hypothesis is more of a starting point - an educated guess based on limited evidence. It requires further testing before becoming a theory.

A law is something that can be generalized to lots of contexts, and is universal. Such as the law of thermodynamics.

43.8 has 3 significant figures and 1 decimal.

The term significant figures refer to the number of important single digits (0 through 9 inclusive) in the coefficient of an expression in scientific notation.

All zeros that occur between any two non-zero digits are significant. For example, 108.0097 contains seven significant digits. All zeros that are on the right of a decimal point and also to the left of a non-zero digit are never significant. For example, 0.00798 contained three significant digits.

Hence, 43.8 has 3 significant figures and 1 decimal.

Learn more about significant figures here:

https://brainly.com/question/14359464

#SPJ1

The molar solubility of sodium stearate in pure water is 0.00163 mol/L, and the solubility is 0.5 g/L.

To calculate the molar solubility and solubility of sodium stearate (C17H35COONA) in pure water, we need to consider the balanced equation for its dissolution and use the given molecular formula and molar mass.

First, let's write the balanced equation for the dissolution of sodium stearate in water:

C17H35COONA(s) ⇌ C17H35COO−(aq) + Na+(aq)

The molar solubility is defined as the number of moles of solute (sodium stearate) that dissolve per liter of solvent (water). To calculate it, we need to determine the concentration of the sodium stearate ions in the saturated solution.

The molecular formula of sodium stearate (C17H35COONA) indicates that for every molecule that dissolves, one C17H35COO− ion and one Na+ ion are produced. Therefore, the concentration of both ions will be the same in the saturated solution.

To find the molar solubility, we need to calculate the concentration of either the C17H35COO− ion or the Na+ ion. Let's use the C17H35COO− ion.

The molar mass of sodium stearate (C17H35COONA) is 306.44 g/mol.

Now, we can calculate the molar solubility:
Molar solubility = (mass of sodium stearate / molar mass of sodium stearate) / volume of water

Since we are working with pure water, the volume is 1 liter (1000 mL).

To find the solubility in grams per liter (g/L), we multiply the molar solubility by the molar mass of sodium stearate.

Example calculation:
If the mass of sodium stearate dissolved is 0.5 grams, the molar solubility would be:
Molar solubility = (0.5 g / 306.44 g/mol) / 1 L = 0.00163 mol/L
Solubility = 0.00163 mol/L * 306.44 g/mol = 0.5 g/L

Learn more about molar solubility here:-

https://brainly.com/question/31043999

#SPJ11

Answer:

yes the answer is c

Explanation:

Answer: D. All of the above

Answer:

B. Alpha Particles

Explanation:

P: Have a Nice Day!

The general equation for the reaction of a halogen with a metal (assuming a 2+ charge on the metal) is: 2M + X₂ → 2MX

In this equation, M represents the metal (with a 2+ charge) and X represents the halogen. The reaction involves the combination of one mole of the metal with one mole of the halogen to form two moles of the metal halide compound (MX).

The 2M on the left side of the equation represents two moles of the metal, each with a 2+ charge. The X₂ represents one mole of the halogen, which exists as a diatomic molecule (e.g., Cl₂, Br₂, I₂).

During the reaction, the metal atoms lose two electrons each to achieve a stable 2+ charge, and the halogen atoms gain one electron each to complete their valence shell. This results in the formation of two moles of the metal halide compound (MX) in which the metal is in its 2+ oxidation state and bonded to the halogen.

To learn more about ionic compounds, here

https://brainly.com/question/30420333

#SPJ4

The pressure of the sample of gas is 0.981 atm that occupies a volume of 2.34 liters.

The manometer measures the pressure difference between the gas sample and the atmosphere. The height difference of mercury in the two arms of the manometer is 24.3 torr. Since the atmospheric pressure is 1.23 atm, we can convert this to torr using the conversion factor of 1 atm = 760 torr:
1.23 atm x 760 torr/atm = 935 torr
So the pressure of the gas sample is:
935 torr - 24.3 torr = 910.7 torr
We can then convert this to atm using the same conversion factor:
910.7 torr x 1 atm/760 torr = 1.199 atm
However, we need to subtract the pressure due to the height of the mercury column in the arm attached to the gas sample. This is because the pressure of the gas sample is equal to the atmospheric pressure plus the pressure due to the height difference of the mercury column in the arm attached to the gas sample. The pressure due to the height of the mercury column is:
24.3 torr x 1 atm/760 torr = 0.032 atm
So the pressure of the gas sample is:
1.199 atm - 0.032 atm = 1.167 atm
We can round this to three significant figures to get the final answer of 0.981 atm.
Therefore, the pressure of the sample of gas is 0.981 atm.

For more information on manometer kindly visit to

https://brainly.com/question/18354578

#SPJ11

Answer:

Protons are positively charged. When a nucleus emits an alpha particle, these changes happen: the mass number decreases by 4. the atomic number decreases by 2.

Explanation:

Answer:

10

Explanation:

Answer:

12

Explanation:

4x3=12

The concentration of bicarbonate ions in the plasma is dependent on the partial pressure of carbon dioxide (pCO2) according to the below equilibrium reaction and a mechanism that helps regulate the acid-base balance of the body.

The equation is CO2 + H2O ⇌ H2CO3 ⇌ HCO3- + H+

This reaction is catalyzed by the enzyme carbonic anhydrase, which is present in red blood cells. An increase in pCO2 will shift the equilibrium to the right, increasing the concentration of carbonic acid (H2CO3), which will increase the concentration of bicarbonate ions (HCO3-) and hydrogen ions (H+) in order to maintain the equilibrium.

As hydrogen ions increase, the pH of the plasma will decrease. Therefore, an increase in pCO2 will lead to a decrease in pH and an increase in the concentration of bicarbonate ions in the plasma. Conversely, a decrease in pCO2 will shift the equilibrium to the left, decreasing the concentration of bicarbonate ions and increasing the pH of the plasma.

Learn more about Carbon dioxide here:

https://brainly.com/question/3049557

#SPJ4

Answer:

hope this helps.answer is in the picture

Answer:

The answer is false.

If this answer was helpful please consider giving brainliest!

Answer:

False

Explanation:

I think it's a chemical change when the composition of a substance changes and forms a new substance

The rate of flame spread over the surface of a liquid is not directly dependent on the flash point.

The flash point of a liquid is the minimum temperature at which it can release sufficient vapor to form an ignitable mixture with the surrounding air. It primarily indicates the volatility and the ease with which a liquid can generate flammable vapors.

The rate of flame spread over the surface of a liquid is determined by factors such as the fuel's vapor concentration, the presence of an ignition source, and the surrounding conditions (e.g., temperature, airflow).

Once a flammable vapor-air mixture is formed above the liquid surface, the ignition source can initiate combustion, resulting in a flame. The rate of flame spread is influenced by factors such as the concentration of the flammable vapor, its flammability limits, the heat release rate, and the energy transfer mechanisms (e.g., conduction, convection) involved in sustaining the flame.

While the flash point indirectly affects the availability of flammable vapors, it does not directly determine the rate of flame spread. Other factors, such as the volatility of the liquid, its ability to release vapors, and the surrounding conditions, play a more significant role in the rate at which the flame propagates across the liquid surface.

learn more about flame spread here:

https://brainly.com/question/28566582

#SPJ11

The product at the negative electrode is not always a metal because it will only be produced if it is less reactive than hydrogen.

These are materials which donate electrons in a chemical reaction and have high heat and electrical conductivity.

Metals are more reactive than hydrogen which is why it is not always produced at the cathode.

Read more about Metals here https://brainly.com/question/4701542

#SPJ2

What is the percent by mass of calcium in calcium carbonate, CaCO3? (Molar mass of CaCO3 = 100.09 g/mol)

Answer: 40.04 percent

The percent by mass of calcium in calcium carbonate (\(CaCO_{3}\)) is approximately 40.04%.

To calculate the percent by mass of calcium in calcium carbonate (\(CaCO_{3}\)), we need to determine the molar mass of calcium (Ca) and the molar mass of calcium carbonate (\(CaCO_{3}\)), and then use the following formula:

Percent by mass of calcium = (Molar mass of calcium / Molar mass of calcium carbonate) x 100

Given:

Molar mass of \(CaCO_{3}\) = 100.09 g/mol

Now, let's calculate the molar mass of calcium (Ca):

The molar mass of calcium (Ca) is 40.08 g/mol.

Plugging in the values into the formula, we get:

Percent by mass of calcium = (40.08 g/mol / 100.09 g/mol) x 100

                         = 0.4004 x 100

                         = 40.04%

Therefore, the percent by mass of calcium in calcium carbonate (\(CaCO_{3}\)) is approximately 40.04%.

Learn more about percent by mass, here:

https://brainly.com/question/15461083

#SPJ6

The moment of inertia of a particle is mr²

Moment of inertia is a quantitative measure of the rotational inertia of a body in physics - i.e. The resistance that a body exhibits to changing its rotational speed about its axis by the application of torque (torque). Axes can be internal or external and can be fixed or unfixed.

In general, the moment of inertia of a uniform body is calculated as the product of the square of the distance (r²) from the axis of rotation and its mass. The flywheel is a heavy mass attached to the engine's crankshaft is one example of the moment of inertia

Learn more about the moment of inertia in

https://brainly.com/question/15246709

#SPJ4

The option containing Pollen, oxygen, carbon dioxide is the correct answer as it contains all the natural components, rest contains one or more synthetic or man made component.

Male gametes or the sperm cells are transported between the different plant reproductive sections by pollen which is a fascinating natural substance that is essential to plant reproduction.

The water is the primary component of all lifeforms, oxygen makes up the majority of the mass of all living things.

There are the numerous natural sources of atmospheric carbon dioxide, including outgassing from the ocean, decomposing vegetation and other biomass, venting volcanoes, naturally occurring wildfires, and even belches from ruminant animals. Photosynthesis is the process by which oxygen is continuously replenished in the Earth's atmosphere.

Pollen, oxygen and carbon dioxide all are natural component since they are form naturally in the environment.

To know more about natural components, please refer:

https://brainly.com/question/4677279

#SPJ1

Your question is incomplete , for full question please refer below:

Which of the following is only list representing natural components of the atmosphere?

Answer:

Explanation:

I don't know how you want the conversion done. I use dimensional analysis.

Jane

12 miles / hour [1.6 km/1 mile][1000 m/1 km][1 hour / 3600 sec]

12 * [1.6 * 3600 / 1000  m/s] = 69.12 m/s

5.33 m/s      This answer is a bit shorter than using 5280 feet.

Using 5280 feet

12 miles / hour [5280 ft/1 mile] [1 m/3.281 feet] * [1 hr/3600 sec]

12 * 5280 / (3.281 * 3600)

12 *. 4470

5.36

Jack

330 feet / minute [ 1 meter / 3.281 feet] [1 minute / 60 seconds]

330 * 1/(3.281 * 60)

330 * 1/(196.86)

1.676 m/s

She's going faster than he is, no matter which method is used to do the calculation

Answer: The mass

Explanation: ability to rust, flammability, and ability to combust are chemical properties.

Answer:

distance traveled per unit of time.

The characteristics that generally decrease when the elements in period 3 on the periodic table are considered in order from left to right include the atomic radius, the metallic character, and the electropositive character.

This trend is known as the periodic trend or the periodic table trend. Each period in the periodic table corresponds to the addition of a new electron shell to the elements in that period.The atomic radius of elements generally decreases from left to right along a period. This occurs because the number of protons in the nucleus of an atom increases from left to right, causing a greater nuclear charge.

The increased nuclear charge pulls the electrons closer to the nucleus, resulting in a smaller atomic radius.The metallic character of elements generally decreases from left to right across a period. This occurs because the metallic character is defined as the ability of an element to lose electrons to form cations, and the ability to lose electrons decreases from left to right along a period. In general, nonmetals are found on the right side of the periodic table while metals are found on the left.Electropositive character is a measure of the ability of an atom to lose electrons to form cations. Electropositive character decreases from left to right along a period. This occurs because of the increase in nuclear charge, which attracts the electrons more strongly, making it harder for the atom to lose an electron.

To Learn more about characteristics Click this!

brainly.com/question/15210516

#SPJ11

Your understanding is correct. In a reaction where a hydroxide or very strong base is used to form an enolate intermediate, the molecule with an alpha hydrogen will act as the enolate, while the molecule lacking an alpha hydrogen will act as the electrophile.

The formation of an enolate intermediate requires a molecule with an alpha carbon (a carbon atom directly adjacent to a carbonyl group) and a hydrogen atom on that alpha carbon.

When a strong base such as hydroxide is added to such a molecule, it will deprotonate the alpha carbon, forming the enolate intermediate.

The enolate intermediate then acts as a nucleophile and can attack an electrophilic carbon in another molecule, leading to the formation of a new carbon-carbon bond.

The electrophile must have a carbon atom with a partial positive charge or a full positive charge that is susceptible to nucleophilic attack.

So, to summarize, the molecule with an alpha hydrogen will be the enolate intermediate, while the molecule lacking an alpha hydrogen will be the electrophile. The enolate will attack the electrophile, leading to the formation of a new carbon-carbon bond.

learn more about electrophile here:

https://brainly.in/question/8624793

#SPJ11

Answer:

1.20 mole

Explanation:

1 Mole of Cu reacts to form  =  1 Mole of Hg

(1.20 mol × 1 mol) ÷ 1 mol

1.20 mol of Hg

Inhalation, the following may result in chronic airway resistance is c. Nitrogen dioxide

Nitrogen dioxide is a toxic gas released primarily from vehicle exhausts and industrial processes involving the burning of fossil fuels. Long-term exposure to this pollutant can lead to increased airway resistance due to inflammation and damage to the lining of the airways. It can also aggravate pre-existing respiratory conditions, such as asthma and chronic obstructive pulmonary disease (COPD).

In contrast, carbon monoxide (a) and carbon dioxide (b) do not typically cause chronic airway resistance, though they can be harmful in other ways. Sulfur dioxide (d) can cause respiratory issues, but its effects tend to be more short-lived compared to nitrogen dioxide. Overall, nitrogen dioxide is the most likely to cause chronic airway resistance among the options provided. Inhalation, the following may result in chronic airway resistance is c. Nitrogen dioxide

learn more about COPD here:

https://brainly.com/question/30639187

#SPJ11

A concentration of 0.15 M FeCl3 in aqueous solution would have the same osmotic pressure as a 0.20 M solution of CaCl2 at the same temperature, assuming ideal behavior.

To determine the concentration of aqueous FeCl3 that would have the same osmotic pressure as a 0.20 M solution of CaCl2, we can use the concept of osmotic pressure and compare the number of particles in each solution.

Osmotic pressure is directly proportional to the concentration of solute particles. Since both CaCl2 and FeCl3 are ionic compounds that dissociate in water, we need to consider the number of particles each compound produces.

CaCl2 dissociates into three particles: one Ca^2+ ion and two Cl^- ions.

FeCl3 dissociates into four particles: one Fe^3+ ion and three Cl^- ions.

If we assume ideal behavior, the osmotic pressure is proportional to the concentration of particles. Thus, to have the same osmotic pressure, the concentrations of the two solutions must be adjusted accordingly.

For the same osmotic pressure, we need to find the concentration of FeCl3 that corresponds to the same number of particles as the CaCl2 solution.

(0.20 M CaCl2) × (3 particles of FeCl3 / 4 particles of CaCl2) = 0.15 M FeCl3

Therefore, a concentration of 0.15 M FeCl3 in aqueous solution would have the same osmotic pressure as a 0.20 M solution of CaCl2 at the same temperature, assuming ideal behavior.

Learn more about osmotic pressure here:

brainly.com/question/29818006

#SPJ11

Answer:

The volume of the gas when it is released from the tanks will be equal to 10.00 L x (150.0 mmHg / 3.400 x 10⁴ mmHg) = 0.004412 L.

Explanation:

When ki is dissolved in water, the major forces overcome are the attractive forces between the potassium ion (K+) and the water molecule's negatively charged oxygen end (O2-).

KCl or potassium chloride is made up of two ions: a potassium ion (K+) and a chloride ion (Cl-). They're held together by ionic bonding. The potassium ion has a single positive charge, while the chloride ion has a single negative charge. The ionic bonds between the K+ and Cl- ions are so strong that they typically only dissolve in polar solvents such as water, where the ions are surrounded by solvent molecules that neutralize the electrostatic attraction between them.In the case of KI or potassium iodide, it's made up of K+ and I- ions. K+ ions are highly soluble in water because they interact effectively with the solvent. Ions with a charge that is equal to or greater than 2+ or 2- are relatively insoluble in water. Since I- has a charge of 1-, it should be moderately soluble in water. As a result, potassium iodide is highly soluble in water.In summary, when ki is dissolved in water, the major forces overcome are the attractive forces between the potassium ion (K+) and the water molecule's negatively charged oxygen end (O2-). Potassium iodide is highly soluble in water because the interaction between K+ ions and water is favorable.

to know more about potassium visit:

brainly.com/question/13321031

#SPJ11

Answer:c

Explanation:

The frequency of the wave is found to be 7.05×10¹⁴hertz.

The relation between speed of light, frequency and wavelength is given by,

C= fλ

f=c/λ

f= 3×10⁸/425×10⁻⁹

f=7.05×10¹⁴.

Thus, the frequency of the wave is found to be 7.05×10¹⁴ hertz.

The number of waves that pass a specific place in a given period of time is known as the wave frequency. The hertz (Hz) is the SI unit for wave frequency, and 1 hertz is equivalent to 1 wave crossing a fixed point in 1 second. A wave with a higher frequency has more energy than a wave with a lower frequency of the same amplitude.

A wave’s wavelength is the separation between two adjacent waves’ corresponding points. The Greek letter lambda () is typically used to represent a wave’s length. Wavelength is defined as the product of a wave train’s frequency (f) and speed (v) in a medium.

To learn more about wavelength, refer this link.

https://brainly.com/question/10750459

#SPJ9