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Lapatulllka [165]
3 years ago
8

Which image exclusively represents the principle of radiation? A) IV B) III C) II D) I

Chemistry
2 answers:
arsen [322]3 years ago
4 0

The principle of radiation protection is to trigger deterministic and stochastic effect.

Explanation:

The main aim of principle of radiation is to prevent the deterministic effects of radiation and reduce the risks of stochastic effects.

There are three general principals of radiation used for dealing with ionising radiation are Justification, Dose limitation and Optimization.

The three basic radiation principles are time, distance and shielding.

The risk of exposure to radiation is measured using the conventional unit rem or SI unit (sievert).

zaharov [31]3 years ago
4 0

Answer:

III

Explanation:

The sun gives off radiation. it will take about 8 minutes for radiation from the Sun to get to Earth. Actually, the Sun does not only produce IR, visible light, and UV. Fusion in the core actually gives off high energy gamma rays.

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Match the element with number of valence electrons
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Answer:

Oxygen-O = 6

Carbon C = 4

Gallium G = 3

Astatine A = 7

Arsenic As = 5

Potassium K = 1

Hydrogen H = 1

Helium H = 2

Explanation:

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3 years ago
What is the delta H when 72.0 grams H2O condenses at 100.00C?
algol [13]

<u>Answer:</u> The value of \Delta H is -163 kJZ

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

We are given:

Given mass of water = 72.0 g

Molar mass of water = 18 g/mol

Putting values in equation 1, we get:

\text{Moles of water}=\frac{72.0g}{18g/mol}\\\\\text{Moles of water}=4mol

Calculating the heat released for the condensation process:

\Delta H=n\times \Delta H_{(vap)} ......(2)

where,

\Delta H = amount of heat released

n = number of moles of water = 4 moles

\Delta H_{(vap)} = specific heat of vaporization = -40.7 kJ/mol

Negative sign represents the amount of heat released.

Putting values in equation 2:

\Delta H=4mol\times (-40.7kJ/mol)=-163kJ

Hence, the value of \Delta H is -163 kJ

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Is the color of the flam a test for the nitrate polyatomic ion in each of the compounds?
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