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3 years ago

Label each of the descriptions below as theoretical

Chemistry

2 answers:

anygoal [31]3 years ago

4 0

Explanation:

Theoretical yield is the yield or measure of mass which can be determined by the help of data like chemical equations, moles, concentrations etc.They do not require any conduct of an experiment.

Experimental yield is the yield or measure of mass which are determined by the means of an experiment.For these values experiment is always conducted.

Calculated based on the chemical equation: Theoretical yield

Measured directly : Experimental yield

Determined experimentally : Experimental yield

Determined using stoichiometry : Theoretical yield

anzhelika [568]3 years ago

3 0

Answer:

Before performing chemical reactions, it is helpful to know how much product will be produced with given quantities of reactants. This is known as the theoretical yield. This is a strategy to use when calculating the theoretical yield of a chemical reaction. The same strategy can be applied to determine the amount of each reagent needed to produce a desired amount of product.

Explanation:

Reagent Examples

Reagents may be compounds or mixtures. In organic chemistry, most are small organic molecules or inorganic compounds. Examples of reagents include Grignard reagent, Tollens' reagent, Fehling's reagent, Collins reagent, and Fenton's reagent. However, a substance may be used as a reagent without having the word in its name.

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A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 89 MPa (81.00 ksi). If the plate is

likoan [24]

Explanation:

The given data is as follows.

$K_{k}$ = 89 MPa, $\sigma$ = 336 MPa

Y = 0.92

Now, we will calculate the length of critical interior flaw as follows.

$a_{c} = \frac{1}{\pi}(\frac{K_{k}}{\sigma Y})^{2}$

= $\frac{1}{\pi}(\frac{89}{336 \times 0.92})^{2}$

= $\frac{656.38}{3.14}$

= 209.04 mm

Thus, we can conclude that minimum length of a surface crack that will lead to fracture is 209.04 mm.

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3 years ago

What is mole ? and it's unit

Aloiza [94]

$\\ \sf\longmapsto 1mole\:is\:a\:specific\:amount\:of\:particles\:of\:a\:substance .$

$\\ \sf\longmapsto It\:is\:Represented\:as\:mol$

$\\ \sf\longmapsto 1mol=6.023\times 10^{23}particles$

4 0

3 years ago

Read 2 more answers

Aqueous solutions of ammonium oxalate and lithium acetate react.

Anarel [89]

Answer:

The reaction is a double displacement reaction

Explanation:

Let us consider the reaction equation of the reaction between ammonium oxalate and lithium acetate.

(NH4)2C2O4(aq) +2 CH3COOLi(aq) -------> 2NH4CH3CO2(aq) + Li2C2O4(s)

This is a displacement reaction. A double displacement reaction is a type of reaction in which two reactants exchange their ions to form two new compounds. Double displacement reactions usually lead to the formation of a solid product which is also called a precipitate.

The general form of a Double displacement reaction is of the format:

AB + CD → AD + CB

Where A,B,C and D represents different ions respectively.

A double displacement reaction can also be referred to as salt metathesis reaction, double replacement reaction, exchange reaction, or a double decomposition reaction, although the latter term is more strictly used when one or more of the reactants does not dissolve in the solvent.

3 0

3 years ago

Consider an atom having four distinct energy levels. If an electron is able to make transitions between any two levels, how many

Kryger [21]

Energy levels are the electron shells where electrons are found at a fixed distance from the nucleus of the atom. The atom could emit 6 different wavelengths.

<h3>What is wavelength?</h3>

A wavelength is a distance between the adjacent crests in wave signals propagated in a system. Wavelength $(\rm \lambda )$ is in inverse relation to the frequency of the wave.

When an electron jumps from energy level 1 to 2, 1 to 3, and 1 to 4 one wavelength each is present. Hence, making the total wavelength to be 3, in transition from the first energy level.

Similarly, from energy levels, 2 to 3 and 2 to 4, a total of 2 wavelengths, and from energy levels 3 to 4 one wavelength is produced.

So the total different wavelengths of the radiation that can be emitted will be 3 + 2 + 1 = 6.

Therefore, 6 different wavelengths of radiation will be emitted by the atom.

Learn more about wavelengths here:

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7 0

1 year ago

A 2.00 kg piece of lead at 40.0°C is placed in a very large quantity of water at 10.0°C,and thermal equilibrium is eventually re

sveticcg [70]

Answer:

Δ S = 26.2 J/K

Explanation:

The change in entropy can be calculated from the formula -

Δ S = m Cp ln ( T₂ / T₁ )

Where ,

Δ S = change in entropy

m = mass = 2.00 kg

Cp =specific heat of lead is 130 J / (kg ∙ K) .

T₂ = final temperature 10.0°C + 273 = 283 K

T₁ = initial temperature , 40.0°C + 273 = 313 K

Applying the above formula ,

The change in entropy is calculated as ,

ΔS = m Cp ln ( T₂ / T₁ ) = (2.00 )( 130 ) ln( 283 K / 313 K )

ΔS = 26.2 J/K

6 0

3 years ago