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Inessa05 [86]
3 years ago
11

A target is shielded from a radioactive sample by a sheet of metal. What kind of radiation can pass through the sheet of metal a

nd hit the target?
gamma rays only
gamma rays and beta particles
beta particles only
beta particles and alpha particles
Chemistry
2 answers:
weeeeeb [17]3 years ago
4 0

A. o. I know gamma can I Hope this helps


A now i remember yeah gamma only

solmaris [256]3 years ago
3 0

Answer : The correct option is, gamma rays only

Explanation :

Penetration power : It is defined as the movement of particles or rays through an object. As more the energy of a particle, more will be the penetrating power.

The increasing order of the penetration power of alpha rays, beta rays, and gamma rays will be,

Alpha rays < Beta rays <  Gamma rays

The penetrating power of the given rays varies greatly.

The alpha particles can be restricted by a few pieces of paper.

The beta particles can be pass through the paper but can not pass by the aluminum foil.

The blocking of gamma rays are the most difficult. It can be blocked by concrete, lead, or other heavy shielding.

Hence, the radiation can pass through the sheet of metal and hit the target is, gamma rays only

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What may be the most important tool to use for collecting data when conducting an investigation into how thermal energy affects
Anna11 [10]

Answer:

thermometer

Explanation:

The most important tool to use when collecting data relating to how thermal energy affects metals would be <u>the thermometer.</u>

The thermometer is an instrument used to measure temperatures and the temperature of a body is a measure of the amount of thermal energy present in the body.

<em>In order to obtain data relating to how thermal energy affects metals, the most important variable to take note of would be the thermal energy of the metals and this can only be done by the thermometer.</em>

5 0
2 years ago
What is the wavenumber of the radiation emitted when a hydrogen
LUCKY_DIMON [66]

Answer: Wavenumber of the radiation emitted  is 0.08\times 10^{8}m^{-1}

Explanation:

The relationship between wavelength and energy of the wave follows the equation:

E=\frac{hc}{\lambda}

where,

E = energy of the radiation = 1.634\times 10^{-18}J

h = Planck's constant  = 6.626\times 10^{-34}Js

c = speed of light = 3\times 10^8m/s

\lambda = wavelength of radiation = ?

Putting values in above equation, we get:

1.634\times 10^{-18}J=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{\lambda}\\\\\lambda=12.16\times 10^{-8}m

\bar {\nu}=\frac{1}{\lambda}=\frac{1}{12.16\times 10^{-8}}=0.08\times 10^{8}m^{-1}

Thus wavenumber of the radiation emitted  is 0.08\times 10^{8}m^{-1}

8 0
3 years ago
If you have 30.O g of hydrogen gas burned in excess oxygen how many moles of water can you make
vladimir1956 [14]

Answer:

15 moles

Explanation:

Data given:

mass of hydrogen (H₂) = 30.0 g

amount of oxygen (O₂) = excess

moles of water = ?

Solution:

First we look to the reaction in which hydrogen react with oxygen and make (H₂O)

Reaction:

              2H₂  + O₂  -----------> 2H₂O

Now look at the reaction for mole ratio

             2H₂  + O₂  -----------> 2H₂O

             2 mole                       2 mole

So it is 2:2 mole ratio of hydrogen to water

As we Know

molar mass of H₂  = 2(1) = 2 g/mol

molar mass of H₂O = 2(1) + 16 = 18 g/mol

Now convert moles to gram

                  2H₂         +       O₂        ----------->    2H₂O

          2 mole (2 g/mol)                                 2 mole (18 g/mol)

                    4 g                                                     36 g

So,

we come to know that 4 g of hydrogen gives 36 g of water then how many grams of water will be produce by 30 grams of hydrogen.

Apply unity formula

                       4 g of H₂ ≅ 36 g of H₂O

                        30 g of H₂ ≅ X of H₂O

Do cross multiplication

                  X of H₂O =  30 g x 36 g / 4 g

                  X of H₂O =  270 g

Now convert grams of H₂O into moles

               No. of moles = mass in grams/molar mass

Put values in above formula

               No. of moles = 270 g / 18 (g/mol)

               No. of moles = 15 mol

so 30 gram of hydrogen produce 15 mol of water.

5 0
3 years ago
Out of Br2 and NaBr which compound is more likely to be more soluble in CCl4
saul85 [17]
Br2 because it is non polar and so is CCl4 and like molecules dissolve like molecules therefore Br2 will dissolve in CCl4
6 0
3 years ago
What does it mean to neutralize a chemical solution?
ELEN [110]

Answer:

A neutralized solution in chemistry refers to the reaction between an acid and base that results in a neutral balance, or a measure of 7 on the pH scale.

Explanation:

4 0
3 years ago
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