The best and most correct answer among the choices provided by your question is the third choice or letter C.
Chlorine would have the same chemical properties as Iodine because they are both non-metals and belong to a single group called "Halogens".
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Particles are far apart from each other because they are very weak forces of attraction between them. Because of this, gases don’t have a definite shape or volume and fill any container .
Answer:
The pH of the solution is 7, 52
Explanation:
The pH gives us an idea of the acidity or alkalinity of a solution. Is calculated:
pH = -log (H +)
pH= -log ( 3x10-8)= <em>7, 52</em>
Answer:
7.15g/cm³
Explanation:
To solve this question we must know that a body-centered cubic unit cell contains 2 atoms.
The volume of the unit cell is:
289pm = (289x10⁻¹²m)³ =
2.414x10⁻²⁹m³ * (1cm³ / 1x10⁻⁶m³) = <em>2.414x10⁻²³cm³</em>
<em />
And the mass is -Molar mass Chromium = 51.9961g/mol:
2atoms * (1mol / 6.022x10²³atoms) * (51.9961g / mol) =
<em>1.727x10⁻²²g</em>
<em />
The density is:
1.727x10⁻²²g / 2.414x10⁻²³cm³ =
<h3>7.15g/cm³</h3>