Most renewable<span> energy comes either directly or indirectly from the </span>sun<span>. </span>Sunlight<span>, or solar energy, can be used directly for heating and lighting homes and other buildings, for generating electricity, and for hot water heating, solar cooling, and a variety of commercial and industrial uses.
</span>
Hello!
To do this, use the molar mass. This is how much a mole of an atom weighs. A mole is 6.02214076×10²³ atoms.
Molar masses of:
Se: 78.96 g/mol
Cu: 63.546 g/mol
Ba: 137.327 g/mol
Now, the element with the highest molar mass will have the fewest atoms. This is because the element weighs more, so therefore for the same amount of mass, there will be less of the element needed to reach that mass.
Therefore, 10g of Ba would have the fewest number of atoms.
Hope this helps!
The weighted average of a penny is = 67.9g
<h3>Calculation of average weight</h3>
The sample of penny for pre 1982 is a total of = 18 pennies.
The mass of each penny for pre 1982 = 3.1
Therefore the total weight for penny for pre 1982
= 18×3.1
= 55.8
The sample of penny for post 1982 is a total of = 32 pennies.
The mass of each penny for post 1982 = 2.5
Therefore the total weight for penny for post 1982
=32×2.5
= 80
The weighted average
= 55.8+80/2
= 135.8/2
= 67.9g
learn more about mass here:
brainly.com/question/14156113
#SPJ1
The radiation one typically encounters is one of four types: alpha radiation<span>, </span>beta radiation<span>, </span>gamma radiation<span>, and x radiation. </span>Neutron radiation<span> is also encountered in nuclear power plants and high-altitude flight and emitted from some industrial radioactive sources.
.
i dont know if this helps but i hope it does.</span>
O=C=O, it’s a double bond between the carbons and oxygen
