CHEMISTRY HIGH SCHOOL

Which region of the visible light spectrum bends the most when passed through a diffraction grating?Red
Yellow
Green
Blue

Answers

Answer 1
Answer:

Answer:

Red

Explanation:

Red is diffracted the most due to its long wavelength. Compared to violet which is the shortest and is diffracted the least.

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The change that is undergone by an atom of an element made radioactive by bombardment with high-energy protons is called(1) natural transmutation(2) artificial transmutation(3) natural decay(4) radioactive decay

Answers

Answer: The correct answer is Option 2.

Explanation:

Natural transmutation is defined as the decay process of the radioactive elements which occur spontaneously by a process that causes transmutation.

Artificial transmutation is defined as the process where artificially induced nuclear reaction is done by the bombardment of nucleus with high energy particles on a radioactive element. It is a spontaneous reaction.

Natural decay or radioactive decay are the processes in which a nucleus disintegrates spontaneously on its own. There are many processes by which this decay takes place.

Hence, the correct answer is Option 2.

Final answer:

Artificial transmutation is the process where an atom of an element is made radioactive by bombardment with high-energy protons. This process was exemplified by Ernest Rutherford when bombarding nitrogen atoms with alpha particles. Thus, changes in atomic structure due to high-energy proton bombardment are results of artificial transmutation.

Explanation:

The change undergone by an atom of an element made radioactive by bombardment with high-energy protons is called artificial transmutation. This is a process of nuclear chemistry, which involves the conversion of one nuclide into another. It can occur through the radioactive decay of a nucleus or via the reaction of a nucleus with another particle.

An example of artificial transmutation was evident in the early work of Ernest Rutherford. In 1919, he bombarded nitrogen atoms with high-speed alpha particles from a natural radioactive isotope of radium and observed protons resulting from the reaction. Thus, artificial transmutation is the process responsible for the alteration in atomic structure when an element becomes radioactive due to bombardment by high-energy protons.

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What is the weight on Earth of an apple with mass 150g?

Answers

Answer:
Gravitational Force = 1.47 N
Acceleration produced in Apple = 9.8 m/s^2
Acceleration produced in Earth = 2.45 x 10^(-23) m/s^2
Explanation:
Mass of Apple = 150 g = 0.15 Kg
Mass of Earth = 6 x 10^24 Kg
Radius of Earth = 6.38 x 10^6 m
Universal Gravitational Constant G = 6.67 x 10^-11 Nm^2/kg^2
Force due to gravity = G (mass of apple) (mass of earth) / (radius of earth)^2
We know that G (mass of earth) / (radius of earth)^2 = g = 9.8 m/s^2
So F = 9.8 (mass of apple) = 1.47 N
Gravitational Force = 1.47 N
By 2nd law of motion F = ma, a = F/m
Acceleration produced in Apple = F / (mass of apple) = 1.47 N / 0.15 Kg = 9.8 m/s^2
Acceleration produced in Earth = F / (mass of earth) = 1.47 N / 6 x 10^24 Kg = 2.45 x 10^(-23) m/s^2
Weight=mass x gravitational field strength

Gravitational field strength= 10N/kg

150/1000= 0.15kg
0.15kg x 10= 1.5N

(Weight is measured in Newton’s)

Describe the chemical process of fermentation.

Answers

Fermentation is a metabolic process. The molecules like glucose are breaks down anaerobically.

What is Fermentation ?

Fermentation is a metabolic process which converts sugars to alcohol, acids or gases. Fermentation is observed in bacteria,yeast cell and also in the muscle of animals.  An Example is lactate fermentation which produces lactic acid.

What is Chemical process of fermentation ?

Fermentation is a chemical process in which molecules like glucose are breaks down anaerobically. Fermentation is chemical change. In chemical changea new substance is formed.

Thus, from above conclusion we can say that Fermentation is a metabolic process. The molecules like glucose are breaks down anaerobically.

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Answer:

Fermentation is a chemical process in which complex organic molecules are broken down into simpler compounds like ethanol. This process is catalyzed by certain enzymes. Enzymes are complex chemical catalysts produced by living cells. The sugars used for fermentation are often formed by enzymatic decomposition of starches from corn, potatoes, rice, or grain.

Explanation:

HELP!!!! The freezing of methane is an exothermic change. What best describes the temperature conditions that are likely to make this a spontaneous change? Any temperature, because entropy increases during freezing. Any temperature, because entropy decreases during freezing. Low temperature only, because entropy decreases during freezing. High temperature only, because entropy increases during freezing.

Answers

Answer: The correct statement is low temperature only, because entropy decreases during freezing.

Explanation:

The relationship between Gibb's free energy, enthalpy, entropy and temperature is given by the equation:

\Delta G=\Delta H-T\Delta S

Where,

\Delta G = change in Gibb's free energy

\Delta H = change in enthalpy

T = temperature

\Delta S = change in entropy

It is given that freezing of methane is taking place, which means that entropy is decreasing and Delta S is becoming negative. It is also given that the reaction is an exothermic reaction, this means that the \Delta H is also negative.

For a reaction to be spontaneous, \Delta G must be negative.

-ve=-ve-[T(-ve)]\n\n-ve=-ve+T

From above equations, it is visible that \Delta G will be negative only when the temperature will be low.

Hence, the correct statement is low temperature only, because entropy decreases during freezing.

Answer:

Low temperature only, because entropy decreases during freezing.

Explanation:

Which particle makes the atom an unstable isotope?

Answers

The particle that makes the atom an unstable isotope is either excess proton or excess neutron.

What is Unstable isotopes?

Unstable isotopes are isotopes of an element that have an excess of either protons or neutrons in their atomic nucleus, making them prone to undergo radioactive decay.

Radioactive decay is the process by which an unstable atomic nucleus releases energy in the form of radiation to achieve a more stable configuration.

The specific particles that can make an atom an unstable isotope are:

Protons: If an atom has an excessive number of protons in its nucleus, it can become unstable.

Neutrons: Similarly, if an atom has an excessive number of neutrons in its nucleus, it can become unstable.

Thus, the particle that makes the atom an unstable isotope is either excess proton or excess neutron.

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Instability of an atoms nucleus can result from an excess of either neutrons or protons . So neutrons and protons .

Describe the pattern of reactions of metals with acids.

Answers

metals become ionic and release hydrogen in free form.
hope it help you.
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