Answer:
Explanation:
Hello there!
In this case, since the heat of fusion is a property that allows us to calculate the heat involved during the change from solid to liquid (fusion) and is calculated as shown below:
In such a way, given the heat involved during this process and the mass of copper, we calculate the heat of fusion as shown below:
Or in kJ/mol:
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<h2>It would have an effect very much like over inflating a balloon. The space inside the Dyson Sphere would be overfilled with energy and the Sphere would be assaulted by energy that exceeds it's capacity to reflect it.</h2>
<span><span>Percent =mass of the elementx100</span>molar mass of compound</span><span> Find the mass percents for the elements present in H2SO4.molar mass of H2SO4<span> = 2(1) + 32 + 4(16) = 98 g</span><span>mass of H = 2 mol H x 1.008g/mol = 2.016 gmass of S = 1 mol S x 32.00g /mol = 32.00 gmass of O = 4 mol O x 16.00g/mol = 64.00 gmass % H = 2.016g/98g x 100 = 2.06%mass % S = 32.00g/98g x 100 = 32.6%mass % O = 64.00g/98g x 100 = 65.3% </span>Calculate the mass % of the elements present in glucose, C6H12O6. </span>
Answer:
45) Ca < Co < Se
46) Te < S < O
Explanation:
These questions are talking about periodic trends. Here are some things to know about periodic trends:
Electronegativity
- how well an element attracts an electron
- increases left to right and bottom to top on the periodic table
- noble gases are not included
- fluorine is most electronegative element, Francium is least
Atomic Radius
- the distance between nuclei
- increases from right to left and top to bottom on the periodic table
- the more electronegative an element is, the smaller it's atomic radius
- Francium has the largest atomic radius while fluorine has the smallest
Ionization Energy
- the energy required to remove an electron
- directly proportional to electronegativity
Metallic Character
- how closely an element's properties match those of a metal
- directly proportional with atomic radius
Hope this helps :)
