Why is the alkyl bromide substrate below not capable of undergoing an E2 elimination reaction upon treatment with potassium hydroxide (KOH) in ethanol (EtOH)

Qualitative observations are research methods based on your senses measurable often taken using instruments only made by scientists in a laboratory

The research method in which the data is collected either by using the five senses or by measurements, In this the qualities of the substance matter and not the quantity.

The qualitative observation is subjective and so varies from person to person.

Each research using the qualitative observation will be unique.

The data is collected using one to one interaction , by questionnaires , The data is non-numerical.

Qualitative observations are research methods based on your senses measurable often taken using instruments only made by scientists in a laboratory

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Answer:

If the pressure is reduced on the solid carbon dioxide the temperature will drop and the liquid carbon dioxide will solidify into snow-like substance.

Explanation:

Taking into account the scientific notation, the result of the sum is 6.6365×10⁵.

First, remember that scientific notation is a quick way to represent a number using powers of base ten.

The numbers are written as a product:

a×10ⁿ

where:

You want to add two numbers in scientific notation. It should be noted that when the numbers to be added do not have the same base 10 exponent, the base 10 power with the highest exponent must be found.

In this case, the highest exponent is 5.

Then all the values ​​are expressed as a function of the base 10 exponent with the highest exponent. In this case: 8.6500×10³= 0.086500×10⁵

Taking the quantities to the same exponent, all you have to do is add what was previously called the number "a". In this case:

0.086500×10⁵ + 6.5500×10⁵= (0.086500+ 6.5500)×10⁵=  6.6365×10⁵

Finally, the result of the sum is 6.6365×10⁵.

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Answer: A

Explanation: NO CAP..................... A!!!!!!!!!!!!!!

% composition of ethanol = 34.51%

% composition of water  = 65.49%

A material's density is defined as its mass per unit volume.

Given data:

The density of ethanol = 0.7890 g/mL

The density of water = 0.9982 g/mL

The density of mixture = 0.926 g/mL

Let the % composition of ethanol = x

Let the % composition of water = 100-x

Now density of the mixture

[tex]\frac{Mass}{Volume}[/tex]

[tex]Mass = \frac{percent \;of \;ethanol \;X \;density \;of \;ethanol \;+ \\ \;percent \;of \;water X \;density \;of \;water}{100}[/tex]

[tex]0.926 = \frac{x X 0.7890 g/mL \;+ (100-x) X 0.9982 g/mL}{100}[/tex]

[tex]x= 34.51[/tex] %

Hence,

% composition of ethanol = 34.51%

% composition of water = 65.49%

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Rice, pasta,sugar and chocolate tested positive for starch while water tested negative for reducing sugar.

This is an organic compound which consists of carbon, hydrogen and oxygen.

It consists of sugars, starch etc in which the food mentioned above also contain them which is why they were chosen as the appropriate choice.

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Answer:

12 banana hands + 2 bottles of chocolate syrup + 12 scoops of Breyers ice cream + 2 containers of candy cherries(30 cherries/per) +  bottle of whipped cream.

Explanation:

Hope this helps!

At STP 1 mole of gas occupies a volume of 22.4 liters. So 3.3moles of gas at STP7 will theoretically occupy 22.4*3.3-74 liters

Answer:

19-73 70-65-46 78-59-86 84-64

The value of c from the given equation is equal to 58.

Significant figures can be used to create numbers and these numbers can be written in the form of digits. We can determine the number of significant figures by counting the values from the first non-zero figure placed on the left.

In the case of multiplication or division, the number of significant figures must be the same as the value with the minimum significant figures. The significant digits of a given number can be defined as those significant figures, which deliver the meaning relative to its accuracy.

The answer is rounded off in such a manner so it will have the digits after the decimal as the least precise number have the same number of digits after the decimal.

Given the equation can be written as:

a - b - c = 401.0

The value of a = 1387.11

The value of b = 928.321

By substituting the values of 'a' and 'b' in the given equation we can evaluate the value of 'c':

1387.11 -  928.321 - c = 401.0

c = 458.79 - 401.0

c = 57.79

c = 58

Therefore, the value of c is equal to 58.

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Answer:

The new volume is 60ml

Explanation

using the equation p1v1/n1t1=p2v2/n2t2 we would divied 30 by 25 the multiply by 50 to get 60

Answer:Your can use the internet There is a web site that is called periodic table.com it is very use full

Explanation:Have fun

In Chemistry, a reactivity series of metals , also known as the activity series refers to the arrangement of metals in the descending order based upon their reactivity .

Salient Features :-

The metal reactivity series is given below :-

To access the reactivity of metal , from the given reactivity series identify any of the metal and locate the reactivity based upon the choice of reactivity. The metal at the top (Potassium) is most reactive and the metal at the bottom (Platinum) is the least reactive.

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Answer:

Heat, Sound

Explanation:

I am pretty sure you are addressing mechanical energy and machine efficiency. So you are probably aware a machine can't achieve 100% efficiency because of the first and second laws of thermodynamics. This energy is lost to friction and air resistance. They convert some gravitational potential energy to heat and sound energy rather than all to kinetic energy, and vice versa.

The radioactive waste can be stored for decay and then safely released into the environment is N-16.

Decays can be of three types: alpha, beta and gamma. Each of them corresponds to a different radioactive particle, which changes the nucleus of the emitting atom according to its characteristics.

Nitrogen 16 ( 16 N ) is the unstable isotope of nitrogen whose nucleus consists of 7 protons and 9 neutrons. Its period is 7.13 s.

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Answer:

Water vapor enters the atmosphere through evaporation from water bodies (oceans, seas, lakes, rivers), ice/snow cover and soil, as well as through evapotranspiration from vegetation

Explanation:

The cycle, which occurs in the troposphere, begins as the sun evaporates large amounts of water from the earth's surface and the moisture is transported to other regions by the wind. As air rises, expands, and cools, water vapor condenses and clouds develop

The equilibrium represents a buffer equilibrium is HI(aq)+H2O(l)→ H3O+(aq)+I−(aq)

Equilibrium is a process that occur in chemical reaction in which there is balance and stability. The rate of forward reaction is equal to the rate of backward reaction.

Buffer solution refer to a solution that have conjugate base and weak acid.

In buffer equilibrium, the weak acid isequal to the conjugate base be

Therefore, The equilibrium represents a buffer equilibrium

is HI(aq)+H2O(l)→ H3O+(aq)+I−(aq)

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Answer:

hope it helps

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Answer:

Ba

Explanation:

Atomic radius increases going right to left, and up to down.

So the closest element to the bottom left corner is Ba.

The theoretical amount of each product obtained are:

Mg(ClO₃)₂ + 2NaOH —> Mg(OH)₂ + 2NaClO₃

From the balanced equation above,

1 mole of Mg(ClO₃)₂ reacted with 2 moles of NaOH

Therefore,

2.72 moles of Mg(ClO₃)₂ will react with = 2.72 × 2 = 5.44 moles of NaOH

From the calculation above, we can see that a higher amount (5.44 moles) of NaOH than what was given (3.14 moles) is needed to react completely with 2.72 moles of Mg(ClO₃)₂

Therefore, NaOH is the limiting reactant

From the balanced equation above,

2 moles of NaOH reacted to produce 1 mole of Mg(OH)₂

Therefore,

3.14 moles of NaOH will react to produce = 3.14 / 2 = 1.57 moles of Mg(OH)₂

Thus, the theoretical yield of Mg(OH)₂ is 1.57 moles

From the balanced equation above,

2 moles of NaOH reacted to produce 2 mole of NaClO₃

Therefore,

3.14 moles of NaOH will also react to produce 3.14 moles of NaClO₃

Thus, the theoretical yield of NaClO₃ is 3.14 moles

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In a simple distillation setup, the sequence of equipment from the bench top to the round bottom flask is:

This is the process in which a mixture is separated through selective boiling and condensation.

The distillation flask and liebig condenser are usually located above the round bottom flask in the set up.

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The concentration of the ions of the solution is 5.7 * 10^-4 M.

The ICE table can be used to determine the equilibrium constant of the process; SrSO4(s) ⇔ Sr^2+(aq) + SO4^2-(aq). ICE stands for initial, concentration and equilibrium.

Thus;

    SrSO4(s) ⇔ Sr^2+(aq) + SO4^2-(aq)

I                            0                0

C                          +x                +x

E                           x                 x

Now;

Ksp = x^2

x = √Ksp

x = √3.2 x 10-7

x = 5.7 * 10^-4 M

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The five components that are important are nuclear fuel consisting of fissionable material, reactor coolant, a nuclear moderator, control rods, and a shield/containment system.

Nuclear reactors are the main parts of the nuclear power plant. They run the nuclear power by initiating the nuclear reactions which produce heat.

Thus, the five components that are important are nuclear fuel consisting of fissionable material, reactor coolant, a nuclear moderator, a shield/containment system,  and control rods.

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The new substance will need more energy to form its chemical bonds than the old substance will release. Hence, option A is correct.

Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the surroundings to form products.

Endothermic reactions, in general, are those that absorb (or use) energy. In endothermic reactions, more energy is absorbed when bonds in the reactants are broken than is released when new bonds are formed in the products.

Normally, when a chemical bond is broken, energy is released in the process. The chemical bond formation also demands an energy input.

The energy that is supplied/released can come in varieties (such as heat, light, and electricity). The formation of chemical bonds following the absorption of heat from the environment characterizes endothermic processes.

When two chemicals react in an endothermic reaction the new substance will need more energy to form its chemical bonds than the old substance will release. Hence, option A is correct.

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The substitution product that is suppose to be favoured is The product with retention of configuration is expected to predominate slightly, because the leaving group blocks the nucleophile.

Substitution product is a product that is gotten from a reaction in which a group of reactant is replaced by another group in the reaction.

Therefore,The substitution product that is suppose to be favoured is The product with retention of configuration is expected to predominate slightly, because the leaving group blocks the nucleophile.

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Answer:

is wrong as she fogot  to do something at the start and it is not a fair test

Explanation:

first she need to use the same with in plate second she needs to make the weighs not measure the dish third when the weighs are on 0  put your ingredient on

ps i have dislexia