17. Suppose you wish to dissolve non-polar solid iodine. Should you choose water, which is
polar, or liquid bromine, which is non-polar, as the solvent? Explain. A [4 Marks]

Answer:

Nutrients advance through the alimentary canal to the stomach and small intestine, and waste materials continue from the small intestine to the colon (large intestine) and anus.

Explanation:

In this case, the primary structure forms hydrogen bonds to fold itself.

The answer is primary structure.

Brighter stars will have a Negative Absolute Magnitude.

The absolute magnitude can be defined as the magnitude that a star would appear to have if it were located at a standard distance of 10 parsecs.

Absolute magnitude is a similar measure that represents how bright an object actually is.

In conclusion, we can say that the brightness of the star Vega is used to define an apparent magnitude of zero.

We can also conclude that Stars that has a positive apparent magnitudes appears to the normal eye to be dimmer than Vega, while stars that has negative apparent magnitudes will appear to be brighter than Vega.

Learn  more about absolute magnitude at: https://brainly.com/question/1056710

#SPJ1

The  amount of excess air will be required if the temperature of the products is to be limited to 825C is  -6.731.This negative value means that we actually need less air than the stoichiometric amount to achieve a product temperature of 825C.

To determine the amount of excess air required for this combustion process, we need to use the stoichiometric equation for the combustion of hexane:
C₆H₁₄+ (19/2)O₂ → 6CO₂ + 7H₂O
This equation tells us that for every mole of hexane, we need 19/2 moles of oxygen (or air) to completely combust the fuel. However, if we want to limit the temperature of the products to 825C, we need to introduce excess air into the combustion chamber. This excess air will help to cool down the products of combustion and prevent them from reaching temperatures that could damage the turbine.
To calculate the amount of excess air required, we can use the equation:
Fuel + (actual air/fuel ratio) x (O₂ in air/stoichiometric O₂) x Air = Products

We know that the initial temperature of the hexane and air is 25C, and we want to limit the temperature of the products to 825C. Therefore, we can assume that the specific heat ratio of the products is constant at 1.4. We also know that the fuel being used is hexane, which has a molecular weight of 86 g/mol.
Using this information and the stoichiometric equation above, we can calculate the amount of excess air required as follows:
1. Calculate the stoichiometric air/fuel ratio:
(19/2) x 32/86 = 7.2
2. Calculate the actual air/fuel ratio required for a product temperature of 825C:
(T2/T1)\(^{0.4}\) = (825 + 273)/(25 + 273) = 3.38
(actual air/fuel ratio) x 7.2 = 3.38
(actual air/fuel ratio) = 0.469
3. Calculate the amount of excess air required:
Air/Fuel ratio - Stoichiometric air/fuel ratio = Excess air/fuel ratio
0.469 - 7.2 = -6.731
Therefore, the answer to the question is that no excess air is required, and the stoichiometric amount of air (7.2 moles per mole of hexane) is sufficient to achieve the desired product temperature.

To know more about temperature  click here

brainly.com/question/31776755

#SPJ11

By using the information provided in the table and the amount of sugar packets added to 100 ml of solution, we can determine the concentration of sugar standards in g/100 ml.

To determine the concentration of the sugar standards in g/100 ml of solution, we can use the information provided in the table. The sugar standards are solutions with varying amounts of sugar dissolved in 100 ml of solution. The sugar concentration is expressed as g sugar/100 ml or % w/v.

According to the table, the first two sugar standards have been done for us. The first standard has 0 g sugar/100 ml, which means no sugar was added to the solution. The second standard has 3.5 g sugar/100 ml, which means one sugar packet was dissolved in the solution.

To determine the concentration of the third sugar standard, we need to know how many sugar packets were dissolved in 100 ml of solution. Since the second standard has 3.5 g sugar/100 ml, we can assume that one sugar packet was used. Therefore, to make the third standard, we need to add two sugar packets to 100 ml of solution, which gives us a concentration of 7 g sugar/100 ml.

Similarly, to determine the concentration of the fourth sugar standard, we need to add three sugar packets to 100 ml of solution, which gives us a concentration of 10.5 g sugar/100 ml.

Therefore, the concentrations of the sugar standards in g/100 ml of solution are:

- Standard 1: 0 g sugar/100 ml
- Standard 2: 3.5 g sugar/100 ml
- Standard 3: 7 g sugar/100 ml
- Standard 4: 10.5 g sugar/100 ml

In summary, by using the information provided in the table and the amount of sugar packets added to 100 ml of solution, we can determine the concentration of sugar standards in g/100 ml.

To know more about concentration, visit:

https://brainly.com/question/10725862#

#SPJ11

Learn more about Chemical Name from the given link

brainly.com/question/29594386

#SPJ1

To calculate the following for test tube 1 and test tube 2:

1. The number of moles of copper(II) sulfate used:

Test tube 1: 0.2 g of copper(II) sulfate was used, which is equivalent to 0.001255 moles (0.2 g / 159.60 g/mol).
Test tube 2: 0.4 g of copper(II) sulfate was used, which is equivalent to 0.002510 moles (0.4 g / 159.60 g/mol).

2. The heat absorbed by the water, in joules:

Test tube 1: Q = (10.0 g) x (4.186 J/g°C) x (20.0°C) = 837.2 J

Test tube 2: Q = (10.0 g) x (4.186 J/g°C) x (30.0°C) = 1257.9 J

3. The change in internal energy of the copper(II) sulfate:
Since the energy released by the copper(II) sulfate is absorbed by the water, the change in internal energy of the copper(II) sulfate is equal to the negative of the heat absorbed by the water.
Test tube 1: ΔU = -837.2 J
Test tube 2: ΔU = -1257.9 J
4. The reaction enthalpy, in joules/mole:
The reaction enthalpy can be calculated using the formula ΔH = ΔU + PΔV, where PΔV represents the work done by the system. Assuming that the reaction was carried out at constant pressure (i.e., atmospheric pressure), PΔV can be approximated to zero, and thus the reaction enthalpy is equal to the change in internal energy.
Test tube 1: ΔH = -837.2 J / 0.001255 mol = -666,876 J/mol
Test tube 2: ΔH = -1257.9 J / 0.002510 mol = -500,357 J/mol
Therefore, the results can be recorded in the following table:

|           | Moles of CuSO4 used | Heat absorbed by water (J) | Change in internal energy (J) | Reaction enthalpy (J/mol) |
|-----------|---------------------|-----------------------------|---------------------------------|---------------------------|
| Test tube 1 | 0.001255            | 837.2                       | -837.2                          | -666,876                 |
| Test tube 2 | 0.002510            | 1257.9                      | -1257.9                         | -500,357                 |

For more questions on: equivalent

https://brainly.com/question/30196207

#SPJ11

Answer:

yes because wet is water

Answer: Being a liquid, water is not itself wet, but can make other solid materials wet. Wetness is the ability of a liquid to adhere to the surface of a solid, so when we say that something is wet, we mean that the liquid is sticking to the surface of a material.

Answer:

1.2 × 10^22 atoms.

Explanation:

Firstly, cations refers to the positively charged atom in the ionic compound, which is Na+.

Given the mass of NaCl as 1.17g, the number of moles of NaCl can be calculated this:

Molar mass of NaCl = 23 + 35.5

= 58.5g/mol

Mole = mass/molar mass

Mole = 1.17/58.5

Mole = 0.02moles

Using Avagadro's number, 6.022 × 10^23 atoms of Na+ are in 1 mole of NaCl.

In 0.02 moles of NaCl, there are 0.02 × 6.022 × 10^23 of Na+

0.1204 × 10^23 atoms

1.2 × 10^22 atoms of Na+ (cation)

The splitting of the signal in the IH NMR spectrum for the methyl protons of 1-bromo-2-methylpropane is a triplet. (C)

In proton NMR, the number of peaks and their relative intensity provides information about the number and types of hydrogen atoms in a molecule.

The splitting of the signal, or the number of peaks, is caused by the interaction between neighboring hydrogen atoms.

For 1-bromo-2-methylpropane, the methyl protons are attached to a carbon atom that is adjacent to two other hydrogen atoms, which causes the signal to split into three peaks of equal intensity, resulting in a triplet.

This splitting pattern is known as a first-order splitting pattern, and the intensity of the peaks is determined by the number of neighboring hydrogen atoms.

To know more about NMR spectrum click on the below link:

https://brainly.com/question/30667404#

#SPJ11

The answer to your problem is 0.015 liters. I got the answer because to convert cubic centimeters into liters, you need to divide the cubic centimeters by 1000.

1. Reduction half reaction (or cathode reaction):-

Ag+(aq)  +  e-  ---------> Ag(s)..........(1)

2. Oxidation half reaction (or anode reaction) :-

Sn(s) --------> Sn2+(aq) + 2e-  ............(2)

3. Overall reaction :-

2*(1) + (2)

or, 2Ag+(aq) + Sn(s)  --------> 2Ag(s) + Sn2+(aq)

A galvanic cell, often known as a voltaic cell after the scientists Luigi Galvani and Alessandro Volta, is an electrochemical cell in which an electric current is created by spontaneous Oxidation-Reduction events. A voltaic cell is an electrochemical cell that uses a chemical process to generate electrical energy. The oxidation and reduction processes are split into half-cell sections.

To create an electric current, galvanic (or voltaic) cells employ a thermodynamically advantageous redox process. Each half-reaction occurs in its own compartment, or half-cell, which contains an electrode. The anode is the electrode where oxidation happens, while the cathode is the electrode where reduction occurs.

To learn more about voltaic cell, here

https://brainly.com/question/1370699

#SPJ4

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

glucose = C₆H₁₂O₆

glucose produced = 1/6 x 23.6 = 3.93 moles

ANSWER: From this experiment, Jeff can conclude that the heat capacity of oil is lower than that of water which means that oil requires less energy per gram of liquid in order to change its temperature.

The mass of copper sulfate present after heating is 0.27 g. The mass of water lost from the original compound is 0.27 g. The number of moles of water is 0.015 mol.

The mass of copper sulfate present after heating can be calculated by subtracting the mass of water lost from the original mass of copper sulfate pentahydrate. Thus, the mass of copper sulfate present after heating is:

Mass of copper sulfate = Mass before heating - Mass after heating

= 1.02 g - 0.75 g

= 0.27 g

The reduction in mass of the compound is entirely due to the loss of water. Therefore, the mass of water lost from the original compound can be calculated as:

Mass of water lost = Mass before heating - Mass after heating

= 1.02 g - 0.75 g

= 0.27 g

To determine the number of moles of water that were in the original compound, we first need to calculate the molar mass of the compound. Copper sulfate pentahydrate has a molar mass of 249.69 g/mol. The number of moles of water can be calculated as:

Moles of water = Mass of water lost / Molar mass of water

= 0.27 g / 18.015 g/mol

= 0.015 mol

The results support the assertion that the original compound was copper sulfate pentahydrate. Copper sulfate pentahydrate contains five molecules of water per molecule of copper sulfate. The calculated number of moles of water lost (0.015 mol) divided by the number of moles of copper sulfate present (0.27 g / 159.61 g/mol = 0.0017 mol) gives a ratio of approximately 9, which is close to the expected ratio of 5. This indicates that the original compound was indeed copper sulfate pentahydrate.

To learn more about the mass of water

https://brainly.com/question/26173436

#SPJ4

1.The mass of copper sulfate after heating is 0.75g, 2.  The mass of water that was lost from the original compound by heating is 0.27g, 3. The number of moles of water that were in the original compound is 0.015 mol and lastly, 4.  Overall, our results do support the assertion that the original compound was copper sulfate pentahydrate

1.The mass of copper sulfate present after heating will be equal to the mass of the compound after heating, since we are assuming that all of the water was evaporated and no decomposition occurred.

2.The mass of water that was lost from the original compound by heating can be calculated by subtracting the mass of the compound after heating from the mass of the compound before heating:
Mass of water lost = Mass before heating - Mass after heating
= 1.02g - 0.75g
= 0.27g

3. The number of moles of water that were in the original compound can be calculated by dividing the mass of water lost by the molar mass of water:
Number of moles of water = Mass of water lost / Molar mass of water
= 0.27g / 18.02g/mol
= 0.015 mol

4.  The original compound was copper sulfate pentahydrate, which has the formula CuSO4·5H2O. This means that there should be 5 moles of water for every mole of copper sulfate in the compound. To determine if our results support this assertion, we can calculate the ratio of moles of water to moles of copper sulfate:
Ratio of moles of water to moles of copper sulfate = Number of moles of water / Number of moles of copper sulfate
= 0.015 mol / (0.75g / 159.61g/mol)
= 0.015 mol / 0.0047 mol
= 3.19

This ratio is close to 5, but not exactly 5. This could be due to experimental error or the fact that not all of the water was completely evaporated during heating. Overall, our results do support the assertion that the original compound was copper sulfate pentahydrate, but more accurate measurements and experimentation would be needed to confirm this.

More questions on mole calculations can be obtained here: https://brainly.com/question/20308734

#SPJ11

Answer:

It is neither a synthesis reaction nor a decomposition reaction because two reactants form two products.

Explanation:

This reaction would be considered a single replacement reaction.

The chemical reaction involves the products and the reactants. The image is neither synthesis nor decomposition as the two products are formed from two reactants. Thus, option A is correct.

A chemical reaction includes the chemical interaction between the reactants to yield the products. In a synthesis reaction, two reactants interact to produce a different molecule or compound.

In a decomposition reaction, a reactant undergoes splitting to produce products and energy. But in the image two reactants produces two products that neither of the reaction shows.

This type of reaction is seen as the single replacement reaction where the more reactive element displaces the less reactive from the compound to form the new molecule.

Therefore, option a. Maya's picture represents a single replacement reaction but not a synthesis or decomposition reaction.

Learn more about the chemical reactions here:

https://brainly.com/question/16099976

#SPJ2

Answer:

A chemical reaction is a process where two different substances or elements are mixed together. They then undergo some sort of chemical change to become a different substance altogether.

Explanation:

The average atomic mass of the Mc in the sample, given the that the hypothetical mass spectrum of Mc, is 289.1 amu

First, we shall determine the atomic mass of each isotope as shown from the spectrum. Details below:

For 1st isotope

Atomic mass of 1st isotope = (Number of atom /total atom) × atomic mass

Atomic mass of 1st isotope = (3 / 10) × 288.2

Atomic mass of 1st isotope = 86.46 amu

For 2nd isotope

Atomic mass of 2nd isotope = (Number of atom /total atom) × atomic mass

Atomic mass of 2nd isotope = (5 / 10) × 289.2

Atomic mass of 2nd isotope = 144.6 amu

For 3rd isotope

Atomic mass of 3rd isotope = (Number of atom /total atom) × atomic mass

Atomic mass of 3rd isotope = (2 / 10) × 290.2

Atomic mass of 3rd isotope = 58.04 amu

Finally, we shall determine the average atomic mass of Mc. Details below:

Average atomic mass of Mc = sum atomic masses of isotopes

Average atomic mass of Mc = 86.46 + 144.6 + 58.04

Average atomic mass of Mc = 289.1 amu

Learn more about average atomic mass:

https://brainly.com/question/24185848

#SPJ1

Answer:

D) H₂SO4 is an acid

Explanation:

Please mark branliest

H\(_2\)SO\(_4\) is the chemical formula that should be classified as an acid. Therefore, the correct option is option D.

Any substance that tastes acidic when dissolved in water, alters the colour of some indicators, reacts with the some metals to release hydrogen, reacts using bases to produce salts, and stimulates some chemical reactions is considered to be an acid. The inorganic chemicals referred to as being mineral acids sulfuric, nitrous, hydrochloric, or phosphoric acids are examples of acids.

The phenolic, sulfonic, and carboxylic acid groups of organic molecules. These chemicals contain one or maybe more hydrogen atoms, which are discharged into highly charged hydrogen ions when they are in solution. H\(_2\)SO\(_4\) is the chemical formula that should be classified as an acid.

Therefore, the correct option is option D.

To know more about an acid, here:

https://brainly.com/question/29796621

#SPJ7

Explanation:

dont know just found it im in fifth grade so....... this is for the first one thats all i could do kk

The gravitational potential energy for the object is  9800 J.

The gravitational potential is the scalar amount characteristic of a point in a gravitational field whose slope breaks even with the escalated of the field and rises to the work required to move a body of unit mass from a given point to a point interminably farther.

The formula referred  for calculating the gravitational  potential to the ground level is given by

        U = mgh

where m  is the mass of the object and g is the gravitational constant and last h is the height from the ground where the object is situated.

As we provided with,

g = 9.8 ms-2

m = 200 kg  

h = 5m

So substituting the required values in the formula m we get  

=  200 x 9.8 x 5

=  9800 J

To know more about gravitational potential refer to  the link https://brainly.com/question/15978356?referrer=searchResults.

#SPJ9

If a gas is cooled from 323.0 K to 273.15 K and the volume is kept constant, 0.77 atm is the final pressure, in atm, would result if the original pressure was 750.0 mmHg.

The force delivered perpendicularly to an object's surface per unit area across which the force is dispersed is known as pressure (symbol: p / P).[1]: 445  The pressure proportional to the surrounding air is known as gauge pressure, also spelt gauge pressure[a].

Pressure is expressed using a variety of units. Some of these are calculated by dividing a unit of force by a unit of area; for instance, the metric system's unit of pressure, a pascal (Pa), is equal to one newton every square metre (N/m2).

P₁/T₁  = P₂/T₂

P₂ = P₁T₂/T₁

  = 0.91 atm × 273.15 K / 323 K

  = 0.77 atm

To know more about pressure, here:

https://brainly.com/question/29341536

#SPJ1

Answer:

As the angle the plane makes with the horizontal is increased, the magnitude of the force of static friction between the block and the plane (2) increases

Explanation:

Since the static frictional force between the block and the plane is given by F = μN where

μ = coefficient of static friction and

N = normal force on plane = component of weight of block perpendicular to the plane = Wcosθ where

W = weight of block and

θ = angle of inclined plane

Now, F = μN

F = μWcosθ

Since μ and W are constant, we see that

F ∝ cosθ and cosθ ∝ θ

So, F ∝ θ

Since the static frictional force is directly proportional to the angle the plane makes with the horizontal, when the angle the plane makes with the horizontal is increased, the static friction between the block and the plane increases.

So, As the angle the plane makes with the horizontal is increased, the magnitude of the force of static friction between the block and the plane (2) increases

Answer:

\(\boxed{It\ will\ shift\ to\ create\ less\ of\ substance\ A}\)

Explanation:

If the concentration of any substance A in a dynamic equilibrium increases, The equilibrium will be  shifted to its opposite side so that Substance A can be created less and the substance opposite to A can be created more so that a "dynamic equilibrium" can again be established.

Answer:

(NH2)-

Explanation:

A conjugate base is formed when a proton is removed from an acid

so NH3 => (NH2)- + H+

so (NH2)- is conjugate base of NH3

Answer:

A. It can proceed in either direction

Explanation:

A P E X

Reactions can be reversible and irreversible. The reversible reactions can proceed in either direction. Thus, option A is correct.

Reversible reactions can convert the reactants and products into each other and hence, move in both the left and right directions. These types of reactions never get completed and attain equilibrium.

The reactants react to produce the products, and the products re-react to form the reactants of the reaction mixture. The melting of the wax can be a reversible reaction.

Therefore, option A. reversible reactions can occur in both directions is correct.

Learn more about the reversible reaction here:

https://brainly.com/question/23711430

#SPJ2

Answer:

The freezing point of a substance is the temperature at which it changes from a liquid to a solid. When tin is added to a substance, it can lower the freezing point of the substance. This is known as a colligative property of matter, which refers to the ability of certain substances, such as solutes, to alter the physical properties of a solvent (such as the freezing point or boiling point) without changing the chemical composition of the solvent.

In the case of tin, when it is dissolved in a solvent, it can disrupt the interactions between the solvent molecules, making it more difficult for the solvent to form a solid. As a result, the freezing point of the solvent is lowered. This effect is more pronounced when the concentration of the solute is higher.

It's important to note that the freezing point depression caused by tin (or any other solute) is dependent on the concentration of the solute and the nature of the solvent. Different solvents will have different freezing points, and the freezing point depression caused by a given solute may vary depending on the solvent used.

Explanation:

A pitcher of orange juice flow smoothly when you transfer it to another container because of lower viscosity value and large proportion of water in it.

Viscosity is the resistance of a fluid to a change in shape or movement of portions as compared to one another. High viscous moves slowly as compared to less viscous.

So we can conclude that a pitcher of orange juice flow smoothly when you transfer it to another container due to lower viscosity.

Learn more about container here: https://brainly.com/question/11459708

Answer:

Explanation:

what are the statments i can't help till i have the posable answers

In the polymerization reaction, the lone pair electrons on the NH₂ groups of hexanediamine attack the C=O groups of the dicarboxylic acid in a nucleophilic substitution reaction as shown in the image.

Hydroxide is added to remove any H⁺ ions present and keep the hexanediamine in the deprotonated form, so that the NH₂ lone pair electrons are available for reaction.

If hydroxide is not added, the NH₂ groups will get protonated by H⁺  ions present to give NH₃⁺ groups, which cannot react.

To view similar questions based on Hydroxide,refer to:

https://brainly.com/question/15683618

#SPJ4