Answer:
Explanation:
mass of 1mole of brick =  mass of 1 brick x avagadro number
= 4 kg x 6.022 x 10^23 bricks  = 2.4 x 10^24 kg
No. of moles of bricks have a mass equal to the mass of the earth
= mass of earth / mass of 1 mole of brick
= [ 6 x 10^27 ]  /  [ 2.4 x 10^24 ]
= 2.5 x 10^3
= 2500 moles
 
        
             
        
        
        
The answer is volume, in gasses, volume depends on the matter, but in solids, volume can be measured.
        
             
        
        
        
Decay of Uranium-238 produces gamma radiaton whereas decay of thorium-234 releases beta radiation.
<h3>What type of radiation is produced?</h3>
In the decay of U-238, two gamma rays of different energies are emitted in addition to the alpha particle while on the other hand, in the decay of thorium-234 , beta rays are emitted.
So we can conclude that decay of Uranium-238 produces gamma radiaton whereas decay of thorium-234 releases beta radiation.
Learn more about decay here: brainly.com/question/25537936
 
        
             
        
        
        
Answer:
Is this chemistry or ELA!
 
        
             
        
        
        
<span>Get a periodic table of elements. ...Find your element on the periodic table. ...Locate the element's atomic number. ...Determine the number of electrons. ...Look for the atomic mass of the element. ...<span>Subtract the atomic number from the atomic mass.</span></span>