Answer:
<h2>Density = 10.01 g/cm³</h2>
Explanation:
The density of a substance can be found by using the formula
<h3>
</h3>
From the question
mass of metal = 54.52 g
Volume of metal = new volume - original volume of water in the cylinder
That's
new volume = 28.85 mL
original volume of water = 23.44 mL
Volume of metal
= 28.85 - 23.44 = 5.41 mL
Next we convert the volume from mL to cm³
1 mL = 1 cm³
5.41 mL = 5.41 cm³
Substitute the values into the above formula and solve
That's
<h3>
</h3>
We have the final answer as
<h3>Density = 10.01 g/cm³</h3>
Hope this helps you
Answer:
Model B
Explanation:
Model A shows that light has been reflected, whereas Model B shows the light has been refracted. Light will be refracted as the light enters a more dense medium (glass), from a less dense medium (air).
This website has a really useful, thorough explanation for why this occurs:
(Check the explanation under the heading 'Explaining refraction - Higher')
https://www.bbc.co.uk/bitesize/guides/zw42ng8/revision/2
Hope this helps!
Answer: The precipitate formed is 
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid or precipitated form are represented by (s) after their chemical formulas.
A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.
The balanced chemical equation is:
Answer:
In general, the energy needed to remove an electron (the ionization energy) increases as the atomic number increases across a period.
Explanation:
Each additional proton increases the attraction between the nucleus and the electron.
Thus, it takes more energy to remove an electron as you add extra protons.
