What type of force holds the atoms within a molecule together?.

Answer: nervous tissue to allow heart

epithelial to transmits

connective to forms like

muscle tissue to support bone

Explanation:

king_n1886        

5) Convert molarity to percent, calculate moles of acetic acid, convert moles to grams, divide grams by volume in mL, multiply by 100 to obtain experimental percent, and calculate percent error.

6) Phenolphthalein could have been used as an alternative indicator.

7) When using barium hydroxide instead of sodium hydroxide, adjust the calculations by considering the stoichiometry of the reaction and using a molar ratio of 2:1 between acetic acid and barium hydroxide.

5. To calculate the percent error in the concentration of acetic acid, we need to convert our molarity (M) results to percent (%). Using the average molarity and the average volume (converted to liters) of acetic acid, we can calculate the number of moles of acetic acid.

Then, by converting moles to grams using the molar mass of acetic acid (CH3COOH), we can divide the grams of acetic acid by the average volume (in milliliters) of acetic acid and multiply by 100 to obtain the experimental percent.

Finally, we can calculate the percent error by comparing the experimental percent to the labeled percent (4% vinegar on the bottle).

6. An alternative indicator that could have been used is phenolphthalein. Phenolphthalein is commonly used in acid-base titrations and changes color in a specific pH range, indicating the endpoint of the reaction.

6. If barium hydroxide (Ba(OH)2) were used instead of sodium hydroxide (NaOH), the adjustment in calculations would involve the stoichiometry of the reaction. The balanced chemical equation for the reaction between acetic acid and barium hydroxide is:

2CH3COOH + Ba(OH)2 → Ba(CH3COO)2 + 2H2O

The molar ratio between acetic acid and barium hydroxide is 2:1. Therefore, the number of moles of barium hydroxide used would be half the number of moles of acetic acid in the calculation.

The rest of the procedure, including converting moles to grams and calculating the percent, would remain the same.

For more such questions on molarity visit:

https://brainly.com/question/30404105

#SPJ8

Answer:

Most oxidation-reduction (redox) processes involve the transfer of oxygen atoms, hydrogen atoms, or electrons, with all three processes sharing two important characteristics: (1) they are coupled—i.e., in any oxidation reaction a reciprocal reduction occurs, and (2) they involve a characteristic net chemical change— .

Electrons will be transferred during redox reaction.

The electron is subatomic particles which are placed in surrounding the nucleus. Electrons carry negative charge.

Redox reaction involve the transfer of electrons between intermediates. A redox reaction occurs when the oxidation states of the substrate change. The removal of electrons or even a rise in the oxidation state of such a chemical or its atoms is referred to as oxidation. The acquisition of electrons or a lowering in the oxidation number of a chemical or the atoms inside it is referred to as reduction.

Hence the answer will be electron

To know more about redox reaction click here.

https://brainly.com/question/13293425.

#SPJ2

Hydrogen bonds exist in the water molecule below.

Only molecules in which hydrogen is covalently bound to either fluorine, oxygen, or nitrogen experience hydrogen bonding. These three elements are sufficiently electronegative that they remove the majority of the electron density from the hydrogen atom's covalent link, leaving the latter atom with an extremely low electron density.

A hydrogen atom that is connected to an electronegative atom moves toward another electronegative atom nearby to form hydrogen bonds, which are potent intermolecular forces. The hydrogen-bond strength will rise as the hydrogen bond acceptor's electronegativity increases.

To know more about  hydrogen bonding visit:-

https://brainly.com/question/15099999

#SPJ4

The compound that has a single, weak IR absorption at 3300 cm-1 is option B) CH3CH2CH2OH, which is a primary alcohol. The absorption at 3300 cm-1 corresponds to the O-H stretching vibration of the hydroxyl group (-OH) in the alcohol functional group.

Infrared (IR) spectroscopy is a powerful analytical technique that is used to identify and characterize chemical compounds based on their unique IR absorption spectra. Different chemical functional groups absorb IR radiation at specific frequencies, resulting in characteristic peaks in the spectrum.  

This peak is typically broad and weak due to the hydrogen bonding interactions between neighboring alcohol molecules, which can result in a broader peak and lower intensity compared to a non-hydrogen bonded O-H group.

Option A) (CH3CH2)2NH is a secondary amine, which typically absorbs in the range of 3200-3500 cm-1 due to N-H stretching vibrations, and not at 3300 cm-1.

Option C) CH3CH2CN is a nitrile compound, which absorbs in the range of 2200-2300 cm-1 due to the C≡N stretching vibration, and not at 3300 cm-1.

Option D) (CH3CH2)2O is a ether compound, which absorbs in the range of 1050-1300 cm-1 due to the C-O stretching vibration, and not at 3300 cm-1.

Option E) CH3CH=CHCH3 is an alkene compound, which does not have a functional group that absorbs at 3300 cm-1.

In summary, the compound that has a single, weak IR absorption at 3300 cm-1 is option B) CH3CH2CH2OH, which corresponds to the O-H stretching vibration of the hydroxyl group in the primary alcohol functional group.

For more such questions on IR absorption.

https://brainly.com/question/14389213#

#SPJ11

Answer:

No

Explanation:

You can not have a reaction that produces "no mass". This breaks the law of conservation of mass. When gasses are produced, they will have a specific amount of mass associated with them which means they will have a weight. They will have to be accounted for

No, the statement a solid substance dissolves in water, releasing heat as it does so is not always true.

A solid substance does not always release heat as it dissolves in water. The enthalpy change of the dissolution process can be endothermic or exothermic depending on the specific solid and solvent used.In an exothermic reaction, the reaction releases heat as it occurs.

Dissolving solid substances in water is an example of an exothermic reaction. The heat that is generated when salt is dissolved in water, for example, is due to the negative and positive ions interacting with one another. Conversely, an endothermic reaction is a reaction that absorbs heat during the process. This is the reverse of exothermic.

For example, dissolving ammonium nitrate in water requires heat because it is endothermic. Therefore, the dissolution of a solid substance in water does not always release heat; it can either be exothermic or endothermic. Hence, the statement is not always true.

Learn more about solid -

brainly.com/question/29494792

#SPJ11

Explanation:

bro this question looks like Astrophysics

By using the universal gravitational law, the gravitational force between the lander and the planet is 688.4 × 10³ N. The acceleration due to gravity of the lander is 6.25 m/s² . The slight changes in gravity may be due to the change with different latitudes of the planet.

Gravitational force is the force by which an object attracts other objects into its center of mass. According to universal gravitational law, the gravitational force can be calculated for two masses m1 and m2 at a distance of r with gravitational constant G as follows:

g = G m1m2/r²

Apply the given values of mass and orbital radius to the equation as follows:

g = (6.647 × 10⁻¹¹ N m² Kg⁻²) (1.1 × 10⁵ Kg × 7.6×10²⁴ Kg ) / (9 × 10⁶ m)²

  =  688.4 × 10³ N.

The acceleration due to gravity of the lander = force /mass

                                                                           =   688.4 × 10³ N /1.1 × 10⁵Kg

                                                                           = 6.25 m/s²

The actual force of gravity may change from the may slightly change from the calculated value because different latitudes will experience different gravity.

To find more on gravity, refer here:

https://brainly.com/question/9722860

#SPJ2

The boiling point of a substance can be found by using the equation: T = (delta h / delta s), where delta H is the enthalpy change and delta S is the entropy change.

To find the boiling point of a substance given the enthalpy change (delta h) and entropy change (delta s), we can use the equation:

delta G = delta H - T * delta S

Here, delta G represents the change in Gibbs free energy, T is the temperature in Kelvin, delta H is the enthalpy change, and delta S is the entropy change.

The boiling point is the temperature at which the Gibbs free energy change becomes zero, indicating that the substance is transitioning from a liquid to a gas. To find the boiling point, we rearrange the equation:

delta G = delta H - T * delta S

Solving for T:

T = (delta H / delta S)

By substituting the given values of delta H and delta S into the equation, we can calculate the boiling point of the substance.

About find here:

https://brainly.com/question/22188924

#SPJ11

The substance that is a strong electrolyte in an aqueous solution is KI.

Strong electrolytes are substances that completely dissociate into ions when dissolved in water, resulting in a solution that can conduct electricity well.

KI is an ionic compound, meaning it is made up of a metal (potassium) and a nonmetal (iodide) that are held together by ionic bonds. When KI is dissolved in water, it dissociates into its ions (K+ and I-), which allows the solution to conduct electricity effectively.

The other options are, b. C2H6 (ethane), c. C6H6 (benzene), d. C8H18 (octane), and e. CCl4 (carbon tetrachloride), are all non-electrolytes or weak electrolytes, as they do not dissociate into ions when dissolved in water, and their solutions cannot conduct electricity well.

These substances are composed of nonmetal atoms and are held together by covalent bonds.

Learn more about strong electrolytes here:

brainly.com/question/28024466

#SPJ11

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question we have

mass = 0.835 × 34

We have the final answer as

Hope this helps you

a. The work required to lift the fridge of wigs without a machine is 160 Joules. b. The effort force required to lift the fridge of wigs with a lever that has a mechanical advantage of 4 is one-fourth (1/4) of the weight of the fridge.

Work is defined as the energy transferred to or from an object by means of a force acting on the object, causing it to move in the direction of the force.

a. To lift the fridge of wigs without a machine, the clown would need to apply a force of 80 Newtons over a distance of 2 meters. The work done would be given by the formula:

Work = Force x Distance

Therefore, the work required would be:

Work = 80 N x 2 m = 160 Joules

So, the work required to lift the fridge of wigs without a machine is 160 Joules.

b. If the lever has a mechanical advantage of 4, it means that the effort force required would be one-fourth (1/4) of the weight of the fridge of wigs. Since the weight of the fridge is not given, let's assume it to be W Newtons.

According to the principle of the lever, the product of the effort force and its distance from the fulcrum is equal to the product of the load force (the weight of the fridge) and its distance from the fulcrum. Assuming that the effort force is applied at a distance of 0.5 meters from the fulcrum, we can write:

Effort force x 0.5 m = (1/4)W x 2 m

Simplifying the equation, we get:

Effort force = (1/4)W x 2 m / 0.5 m = (1/4)W x 4

Effort force = W Newtons / 4

Therefore, the effort force required to lift the fridge of wigs with a lever that has a mechanical advantage of 4 is one-fourth (1/4) of the weight of the fridge.

Learn more about work here:

https://brainly.com/question/18094932

#SPJ1

Answer:

False

Explanation:

sea floor spreading is not consistent at all mid ocean ridges.

Answer:

83.82 g of magnesium ions.

Explanation:

We want to determine the mass of magnesium ions in 155.0 grams of magnesium phosphide (Mg₃P₂).

We can convert from grams of Mg₃P₂ to moles of Mg₃P₂, moles of Mg₃P₂ to moles of Mg, and moles of Mg to grams of Mg.

Find the molecular weight (molar mass) of magnesium phosphide:

\(\displaystyle \begin{aligned}\text{MW}_\text{Mg$_3$P$_2$} &= \left(3(24.31)+2(30.97)\right) \text{ g/mol} \\ \\ &= (72.93 + 61.94) \text{ g/mol} \\ \\ &= 134.87 \text{ g/mol}\end{aligned}\)

The molecular weight of magnesium is 24.31 g/mol*.

From the chemical formula, we can see that there are three moles of magnesium for every one mole of magnesium phosphide.

Hence, multiply initial amount with known ratios:

\(\displaystyle \begin{aligned} &155.0 \text{ g Mg$_3$P$_2$} \cdot \frac{1 \text{ mol Mg$_3$P$_2$}}{134.87\text{ g/mol}} \cdot \frac{3\text{ mol [Mg$^{2+}$]}}{1 \text{ mol Mg$_3$P$_2$}}\cdot \frac{24.31 \text{ g [Mg$^{2+}$]}}{1 \text{ mol [Mg$^{2+}$]}}\\ \\ & = 83.82 \text{ g [Mg$^{2+}$]}\end{aligned}\)

In conclusion, there are 83.82 grams of magnesium ions in 155.0 grams of magnesium phosphide.

*Because the magnesium ions in magnesium phosphide have two less electrons, its molecular weight will indeed be lower. However, due to the extremely small size of an electron (1/2000th of a proton), the difference in mass is insignificant.

The correct options are: The boiling point is the temperature at which the vapor pressure equals the external pressure and Boiling occurs when the vapor pressure of the liquid is sufficient for bubbles of vapor to form in the interior of the liquid.

The first option is a fundamental concept in thermodynamics and describes the point at which a liquid changes into a gas. At the boiling point, the vapor pressure of the liquid becomes equal to the external pressure, causing the liquid to boil and turn into a gas. The boiling point is a unique property of a substance and can be used to identify and characterize it.

The second option is a description of the process by which boiling occurs. Boiling occurs when the vapor pressure of the liquid exceeds the external pressure and bubbles of vapor form in the interior of the liquid. These bubbles then rise to the surface and escape into the atmosphere. The temperature at which boiling occurs is the boiling point.

The other options are incorrect. A substance with strong intermolecular forces will have a high boiling point, not a low one. The boiling point of a substance increases as the external pressure decreases, not increases. Finally, while evaporation is a related process, it is not the same as boiling, which involves the entire volume of the liquid changing to a gas.

To know more about boiling point click here:

brainly.com/question/16945842

#SPJ4

Answer:

Average Mass = 107.88 amu

Explanation:

We can calculate the average mass of an element by mutlpying the mass of its isotopes by their respective relative abundance and then making a total sum. Meaning that for this case:

Answer:

B

Explanation:

The muscular and nervous systems enable the involuntary breathing mechanism. The main muscles in inhalation and exhalation are the diaphragm and the intercostals (shown in blue), as well as other muscles. Exhalation is a passive action, as the lungs recoil and shrink when the muscles relax.

The pressure exerted by the neon gas, when the volume is increased from 7.2 mL to 28.8 mL at constant temperature, can be calculated using Boyle's Law. The pressure exerted by the neon gas, when the volume is increased to 28.8 mL at constant temperature, is 0.375 atm.

Boyle's Law states that at constant temperature, the product of the pressure and volume of a gas remains constant. Mathematically, it can be expressed as P₁V₁ = P₂V₂. This law allows us to calculate the change in pressure when the volume changes.

In this case, the initial volume (V₁) is given as 7.2 mL, and the initial pressure (P₁) is 1.5 atm. The final volume (V₂) is 28.8 mL. By substituting these values into Boyle's Law equation, we can solve for the final pressure (P₂).

When we perform the calculations, we find that the pressure exerted by the neon gas, when the volume is increased to 28.8 mL, is 0.375 atm. As the volume increases, the pressure decreases due to the inverse relationship between pressure and volume.

Using Boyle's Law: P₁V₁ = P₂V₂

Given:

Initial volume (V₁) = 7.2 mL

Initial pressure (P₁) = 1.5 atm

Final volume (V₂) = 28.8 mL

To find the final pressure (P₂):

P₂ = (P₁ * V₁) / V₂

  = (1.5 atm * 7.2 mL) / 28.8 mL

  = 0.375 atm

Therefore, the pressure exerted by the neon gas, when the volume is increased to 28.8 mL at constant temperature, is 0.375 atm.

for such more questions on  pressure

https://brainly.com/question/24719118

#SPJ8

When Na₃PO₄ is dissolved in aqueous solution, it produces four ions: three Na+ ions and one PO43- ion.

When Na₃PO₄ is dissolved in an aqueous solution, it undergoes dissociation into its constituent ions. Na3PO₄ is composed of three sodium ions (Na+) and one phosphate ion (PO43-). When the compound dissolves, each Na+ ion separates from the PO43- ion, resulting in the formation of four ions in total. Three sodium ions (Na+) and one phosphate ion (PO43-) are produced in the solution. The sodium ions carry a positive charge, while the phosphate ion carries a negative charge due to the loss or gain of electrons during the dissolution process.

Learn more about: Aqueous solution,

brainly.com/question/1382478

#SPJ11

Answer:

the answer is D

Explanation:

Air over the beach heats up, rises, and is replaced by cool, denser ocean air

The ocean heats up much slower and becomes relatively cooler than the beach making it a high pressure zone. The air moves from the water to the land each morning forming a sea breeze. These pressure zones might equal out later in the day and the winds may diminish. ... A sea breeze blows from the ocean towards the beach.

INFORMATION:

We know that:

- sodium and oxygen react to produce Sodium Oxide

-

The number of molecules of H₂O produced from 6.23g of C₂H₆ in the above reaction is 3.75 × 10²³ molecules.

Stochiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, the following reaction occurs;

2 moles of ethane produces 6 moles of water

6.23 g, which is equivalent to 0.21 moles of ethane will produce 0.623 moles of water.

no of molecules of water produced = 0.623 mol × 6.02 × 10²³

no of molecules = 3.75 × 10²³ molecules

Learn more about stoichiometry at: https://brainly.com/question/28780091

#SPJ1

Answer:

10Na + 2NaNO3 → 6Na2O + N2

Explanation:

Answer:

graphite

Explanation:

graphite is also good conductor of electricity

Answer:

6w6288shbdmdkdhckcncjciicjcididjdn dmxixisk ddjdidjjd

Explanation:

dnnxjxkxjxjndnfncjcshndnsbsnnsnssbsnsnsnsndndndnx

Answer:

Sprinkler powder on the carron board reduce friction.

The variables in the ideal gas constant has V as the unit of liters and T has the unit of Kelvin. Thus, option C is correct.

The gas constant in an ideal gas equation has been the value of the energy absorbed by 1 mole of an ideal gas at standard temperature and pressure.

The value of R has been dependent on the units of volume, temperature and pressure of the ideal gas.

The given value of R has been 0.0821 L.atm/mol.K

The unit in gas constant has been L (Liter) for volume (V).

The unit of pressure (P) has been atm.

The unit of temperature (T) has been Kelvin  (K).

Thus the gas law constant used by student has V has the unit of liters and T has the unit of Kelvin. Thus, option C is correct.

For more information about the gas constant, refer to the link:

https://brainly.com/question/24814070

The dispersion and mixing of particles would be made easier through the application of ultrasonic waves.

Ultrasonic waves can facilitate the dispersion and mixing of particles in an experimental procedure. When ultrasonic waves are applied, they generate high-frequency sound waves that create alternating compression and rarefaction waves in a liquid medium.

These waves produce tiny bubbles due to the phenomenon of cavitation. During cavitation, the bubbles rapidly expand and collapse, creating localized areas of high pressure and temperature.

This process exerts mechanical forces on the surrounding particles, leading to their effective dispersion and mixing. The energy from ultrasonic waves helps to break down agglomerates, disperse fine particles, and enhance the overall homogeneity of the mixture.

The application of ultrasonic waves can be particularly beneficial in procedures such as sample preparation, emulsification, dispersion of nanoparticles, and dissolution of substances. It improves the efficiency and effectiveness of processes that require uniform distribution and thorough mixing of components.

Learn more about Ultrasonic waves

brainly.com/question/31274948

#SPJ11