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2 answers:
Answer : The correct option is, C.
Explanation :
- Refraction : When light is passing from rarer medium to denser medium then the light bends towards the normal line due to change in the speed of the light.
- Reflection : When light ray falling on the surface then the refracted ray coming out from the surface. In reflection, the incident angle is equal to the reflected angle.
In a given diagram, refraction phenomenon is observed in which an incident angle of a light ray is and the refracted angle of a light ray is
which means the light bends towards the normal.
From this we can say that the light is passing through rarer medium to denser medium. In denser medium, the speed of light slows down.
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<h3>Answer:</h3>
28 mol CaF
<h3>General Formulas and Concepts:</h3><u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
- Left to Right<u> </u>
<u>Chemistry</u>
<u>Atomic Structure</u>
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
<u>Stoichiometry</u>
- Using Dimensional Analysis
<u>Step 1: Define</u>
[Given] 1.7 × 10²⁵ molecules CaF
[Solve] moles CaF
<u>Step 2: Identify Conversions</u>
Avogadro's Number
<u>Step 3: Convert</u>
- [DA] Set up:
- [DA] Multiply/Divide [Cancel out units]:
<u>Step 4: Check</u>
<em>Follow sig fig rules and round. We are given 2 sig figs.</em>
28.2298 mol CaF ≈ 28 mol CaF