Among alpha,beta, neutron, and gamma radiations, gamma radiation has the greatest ability to penetrate matter. It can pass through dense and thick materials, including a few feet of concrete and even lead.
When comparing the ability of different types of radiation to penetrate matter, from least penetrating to most penetrating, the sequence is alpha < beta < neutron < gamma. This means the gamma radiation is the most penetrating type of radiation. Alpha radiation has the least penetration ability and can be blocked by even a thin sheet of paper. Beta radiation has slightly higher penetration power, able to go through about 3mm of aluminum, for instance. Gamma radiation, on the other hand, can penetrate much denser and thicker materials. For example, high-energy gamma radiation can pass through a few feet of concrete, and even lead to a depth of 2 or more centimeters.
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Probability
Degree
Expected occurrence
Identification
Answer:
Probability
Explanation:
The frequency of an event is a measure of how often the event occurs within a given time period.
Explanation:
The frequency of an eventrefers to how often the event occurs within a given time period. It is a measure of the rate at which the event happens. Frequency can be calculated by dividing the number of times the event occurs by the total time period. Probability, on the other hand, is a measure of the likelihood of an event happening.
For example, if a student attends class 4 days a week, the frequency of attending class is 4/7 or 0.57. Probability, on the other hand, refers to the likelihood of an event occurring. It is a measure of the chances of the event happening. Probability is expressed as a number between 0 and 1, where 0 means the event will not happen and 1 means the event will definitely happen.
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(in scientific vocab)
my guess i dont know exactly but heat is energy
heat absorbed or radiated during a change of phase at a constant temperature and pressure. specific heat. the heat required to raise the temperature of one gram of a substance one degree centigrade. heat of condensation. heat liberated by a unit mass of gas at its boiling point as it condenses into a liquid.
The years that will take or 52.5 g of a 60.0 g sample to decay to its daughter isotope is 807 years.
Half-life is the time required to decay or undergo half the process of any element.
Given the sample is 60.0 g in which 52.5 g sample has to be decay
so, 60 - 52.5 = 7.5 g
It can be seen that it goes three half life
60 >30 >15 >7.5
Now, the half life is 269
269 × 3 = 807 years.
Thus, the years taken are 807 years.
Learn more about isotopes
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Answer:
1.74845
Explanation:
We have the following reaction:
I2 + H2 => 2 HI
Now, the constant Kc, has the following formula:
Kc = [C] ^ c * [D] ^ d / [A] ^ a * [B] ^ b
In this case I2 is A, H2 is B and C is HI
We know that the values are:
H2 = 1 × 10 ^ -3 at 448 ° C
I2 = 2 × 10 ^ -3 at 448 ° C
HI = 1.87 × 10 ^ -3 at 448 ° C
Replacing:
Kc = [1.87 × 10 ^ -3] ^ 2 / {[2 × 10 ^ -3] ^ 1 * [1 × 10 ^ -3] ^ 1}
Kc = 1.87 ^ 2/2 * 1
Kc = 1.74845
Which means that at 448 ° C, Kc is equal to 1.74845
Answer:
Explanation:
[H2] = 10^-3
[I2] = 2*10^-3
[HI] = 0
in equilbiirum
[H2] = 10^-3 - x
[I2] = 2*10^-3 -x
[HI] = 0 + 2x
and we know
[HI] = 0 + 2x = 1.87*10^-3
x = ( 1.87*10^-3)/2 = 0.000935
then
[H2] = 10^-3 - 0.000935 = 0.000065
[I2] = 2*10^-3 -0.000935 = 0.001065
H₂ + I ⇄ 2 HI
Initially 1 × 10⁻³ 2 × 10⁻³
Change -9.35 × 10⁻⁴ -9.35 × 10⁻⁴ +1.87 × 10⁻³
At equil 6.5 × 10⁻⁵ 1.06 5 × 10⁻³ 1.87 × 10⁻³
HI increase by 1.87 × 10⁻³M
Answer: A - Structural models provide minimal three-dimensional information.
Explanation: