The answer is (C) The electrons are moving easily between the nuclei of metal atoms.
The explanation:
-The electrons then move freely throughout the space between the atomic nuclei. ... Metals are good conductors of electricity because the electrons in the electron sea are free to flow and carry electric current. Metals are ductile and malleable because local bonds can be easily broken and reformed.
1-Metals are good conductors of electricity because the electrons in the electron sea are free to flow and carry electric current.
2-Metals are ductile and malleable because local bonds can be easily broken and reformed.
3-Metals are shiny. Light cannot penetrate their surface; the photons simply reflect off the metal surface. However, there is an upper limit to the frequency of light at which the photons are reflected.
Explanation:
<h2>(a).</h2>
The density of a substance can be found by using the formula
From the question
mass of metal = 14 g
volume = 2.98 mL = 2.98 cm³
It's density is
We have the answer as
4.70 g/cm³
<h2>(b).</h2>
The metal is not copper since it's density is less than that of copper.
Hope this helps you
Range means the difference between the highest and lowest number. So subtract 25 - 14 which gives you 11.
<span>8.278 g/mL
The definition of density is mass per volume. So what you need to do is divide the known mass by the known volume. So
1.663 g / 0.2009 mL = 8.27775 g/mL
But you also have to keep track of significant figures. Since both 1.663 and 0.2009 have 4 significant figures each, you need to round the result to 4 significant figures. So
8.27775 g/mL = 8.278 g/mL</span>
Answer:
26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.
Explanation:
Molar mass of compound = 120 g/mol
Number of sulfur atom = 1
Atomic mass of sulfur = 32 g/mol
Percentage of element in compound :
Sulfur :
26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.
