Answer:
A.
Explanation:
There are no vehicle emissions other than water vapor. This means no pertroleum products and no fossil fuels. :)
-Sienna Sushi
1. It is something we don't have to worry about ever losing.
2. We can use quite a bit of it.
3. Renewable energy saves us from wasting non reusable energy
4. We have something to use when we run out of non reusable energy
5. The energy is is helpful with everyday things.
Answer:
<em>A supersaturated solution that undergoes a physical shock can result in the crystallizing of the solute in the solution.</em>
<em></em>
Explanation:
A solution is made up of a solute dissolved in a solvent. <em>A supersaturated solution is one in which the solvent holds more of the solute that it can hold in a normal condition</em>. Supersaturation is an unstable state than easily reverse itself. At supersaturation, the maximum ability of the solvent to dissolve and hold the solute is stretched to its maximum limit. Physical shock to such a system in any any form possible will result in the crystallization of the solute within the solution. <em>Physical shock can be in the form of a reduced temperature, a reduction in the volume of the solvent by evaporation, a decrease in the pressure of the system and even a mild vibration</em>.
<h3>
Answer:</h3>
1.39 × 10²³ particles CuCr₂O₇
<h3>
General Formulas and Concepts:</h3>
<u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Chemistry</u>
<u>Atomic Structure</u>
- Reading a Periodic Table
- Moles
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
<u>Stoichiometry</u>
- Using Dimensional Analysis
<h3>
Explanation:</h3>
<u>Step 1: Define</u>
[Given] 64.5 g CuCr₂O₇
[Solve] particles CuCr₂O₇
<u>Step 2: Identify Conversions</u>
Avogadro's Number
[PT] Molar Mass of Cu - 63.55 g/mol
[PT] Molar Mass of Cr - 52.00 g/mol
[PT] Molar Mass of O - 16.00 g/mol
Molar Mass of CuCr₂O₇ - 63.55 + 2(52.00) + 7(16.00) = 279.55 g/mol
<u>Step 3: Convert</u>
- [DA] Set up:
- [DA] Divide/Multiply [Cancel out units]:
<u>Step 4: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs.</em>
1.38944 × 10²³ particles CuCr₂O₇ ≈ 1.39 × 10²³ particles CuCr₂O₇