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3 years ago

For beta radiation, what stops its penetrating abilities?

Chemistry

2 answers:

natali 33 [55]3 years ago

7 0

A.) Aluminum is the correct answer

aleksandr82 [10.1K]3 years ago

7 0

The correct answer is aluminium.

Beta radiation consists of electrons that are ejected by the nucleus. Beta particles have the charge of an electrons and the mass of an electron. Beta particles are quite small , giving them the ability to travel through materials a bit longer before collisions with other particles makes them stop hence they can not be stopped by skin, a piece of paper and thin fabric. Their size accounts for why they have more penetration abilities than alpha particles which are large and can be stopped by a thin piece of paper. However, it is known that a few millimeters of aluminium sheet is able to stop beta particles.

The correct answer is aluminium.

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A chunk of tin weighing 18.5 grams and originally at 97.38 °C is dropped into an insulated cup containing 75.7 grams of water at

weqwewe [10]

Answer:

22.44°C will be the final temperature of the water.

Explanation:

Heat lost by tin will be equal to heat gained by the water

$-Q_1=Q_2$

Mass of tin = $m_1=18.5 g$

Specific heat capacity of tin = $c_1=0.21 J/g^oC$

Initial temperature of the tin = $T_1=97.38^oC$

Final temperature = $T_2$ =T

$Q_1=m_1c_1\times (T-T_1)$

Mass of water= $m_2=75.7 g$

Specific heat capacity of water= $c_2=4.184 J/g^oC$

Initial temperature of the water = $T_3=21.52^oC$

Final temperature of water = $T_2$ =T

$Q_2=m_2c_2\times (T-T_3)$

$-Q_1=Q_2$

$-(m_1c_1\times (T-T_1))=m_2c_2\times (T-T_3)$

On substituting all values:

$-(18.5 g\times 0.21 J/g^oC\times (T-97.38^oC))=75.7 g\times 4.184 J/g^oC\times (T-21.52 ^oC)$

we get, T = 22.44°C

22.44°C will be the final temperature of the water.

5 0

3 years ago

Elements that are generally shiny when smooth and clean.

Verdich [7]

Metals are elements that are generally shiny when smooth and clean

5 0

3 years ago

Write a scientific report on the clouds seeding using condensation nuclei and showing its relationship to saturated solutions.

Andrej [43]

Answer:

um thats tricky man

Explanation:

i dont even know what nuclei is

6 0

3 years ago

Which of the following is not an example of a chemical change?

elena55 [62]

This would be C. A car rusting

5 0

3 years ago

Read 2 more answers

A buffered solution has a pH of 7.5. What would happen to the pH if a small

musickatia [10]

Answer:

Dear user,

Answer to your query is provided below

When small amount of acid was added to buffered solution, pH will change very less.

Explanation:

Buffer solution resists change in ph on adding small amount of acid or base but when we calculate the value of buffer capacity we take the change in ph when we add acid or base to 1 lit solution of buffer.This contradicts the definition of buffer solution.

5 0

3 years ago