What is the study of the spectra produced from the emission and absorption of electromagnetic radiation? study of absorption spectrums study of emission spectrum nanotechnology spectroscopy

Answers

Answer 1

Answer:

Answer the correct answer out of the four is option c spectroscopy

Explanation- The interaction between electromagnetic radiation and matter studied. This study is commonly known as spectroscopy. It can also be named as study of absorption spectra or emission spectra.

The former spectrum is formed when energy is absorbed from Photons or light energy by electrons while the latter spectrum is formed due to a wavelength of light that is released when electrons jump from higher to lower level.

Answer 2

Answer:

Answer:

D spectroscopy

Explanation:

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In your own words, what is an isotope

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Answer:

It is a chemical element with an atomic number.

What is the KE of a 4kg mass, moving at 3m/sec?

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Answer:

The kinetic energy of a 4 kg mass moving at 3 m/s is 18 joules.

Explanation:

The kinetic energy (KE) of an object is calculated using the following formula: (image inserted)

Where:

KE: is the kinetic energy

m: is the mass of the object

v: is the velocity of the object

In your case, the mass (m) is 4 kg, and the velocity (v) is 3 m/s. Plugging these values into the formula.

The unit of kinetic energy is the joule (J), which is equivalent to a kg m^2/s^2. So:

KE = 18 J

A 115.0-g sample of oxygen was produced by heating 400.0 g of potassium chlorate. 2KClO3 mc019-1.jpg 2KCI + 3O2 What is the percent yield of oxygen in this chemical reaction?

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The balanced equation that describes the reaction of heatinf potassium chlorate to produce potassium chloride and oxygen is expressed 2KClO3 = 2KCI + 3O2. For a 400 g potassium chloride, using stoichiometry, the mass oxygen produced is 156.67 grams oxygen. The actual product weighed 115.0 grams. Yield is equal to 115/156.67 or 73.74%

Answer:

The percent yield of oxygen in this chemical reaction is 73.71 %.

Explanation:

Experimental yield of oxygen gas = 115.0 g

Theoretical yield:

$2KClO_3rightarrow 2KCI + 3O_2$

Mass of potassium chlorate = 400.0 g

Moles of potassium chlorate = $(400 g)/(122.5 g/mol)=3.2653 mol$

According to reaction, 2 moles of potassium chlorate gives 3 moles of oxygen gas.

Then 3.2653 mol of potassium chlorate will give:

$(3)/(2)* 3.2653 mol=4.89795 mol$

Mass of oxygen gas :

$32 g/mol* 4.89795 mol=156.73 g$

Percentage yield:

$\%=\frac{\text{Experimental yield}}{\text{Theoretical yield}}* 100$

$\%=(115.0 g)/(156.73 g)* 100=73.71\%$

The percent yield of oxygen in this chemical reaction is 73.71 %.

Provide a balanced equation for the reaction between lead nitrate and sodium chloride

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Answer:

Pb(NO3)2 + 2NaCl = PbCl2 + 2NaNO3

Explanation:

Lead nitrate is Pb(NO3)2

Sodium Chloride is NaCl

The basic reaction is:

Pb(NO3)2 + NaCl = PbCl2 + NaNO3

Now we need to balance the equation. Note that the lead nitrate contributes 2 (NO3) units, but there is only 1 NO3 on the product side. So start by adding a second NaNO3:

Pb(NO3)2 + NaCl = PbCl2 + 2NaNO3

Now we have 2 Na atoms on the right side, so add a "2" to the NaCl:

Pb(NO3)2 + 2NaCl = PbCl2 + 2NaNO3

This is starting to look good. Lets check the atom/unit counts on both sides of the equation:

Reactants Products

Pb 1 1

NO3 2 2

Na 2 2

Cl 2 2

The equation is now balanced. Pb(NO3)2 + 2NaCl = PbCl2 + 2NaNO3

What's the process results in a splitting of a nucleus ?

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Nuclear fission is the answer.

i believe it is nuclear fission

Which of the following is necessary for collisions to be successful?A. enough kinetic energy and favorable geometry
B. enough kinetic energy only
C. sufficient potential energy only
D. favorable geometry only

Answers

Answer: A. enough kinetic energy and favorable geometry

Explanation: According to collision theory, the rate of a reaction depends upon the number of effective collisions which means the collisions which result in the formation of product which in turn depend on following two factors:-

a) Energy factor: In order for a collision to be successful, the colliding molecules must cross a energy barrier which is called as threshold energy. Thus molecules with energy less than threshold energy are not able to result into products.

b) Orientation factor: the colliding molecules must have proper orientations at the time of collision otherwise they do not result in product formation.

It's A Enough kinetic energy and favorable geometry

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How many protons and electrons are in an atom of sodium whose atomic number is 11?

When 25.0 mL of sulfuric acid solution was completely neutralized in a titration with 0.05 M NaOH solution, it took 18.3 mL of the NaOH(aq) to complete the job. The reaction is:NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + H2O(l)What was the molarity of the sulfuric acid solution?