What is the mass of 1.20 x 10^25 atoms of He
1 answer:
Answer:
79.7 g He
General Formulas and Concepts:
<u>Chemistry - Atomic Structure</u>
- Reading a Periodic Table
- Using Dimensional Analysis
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
Explanation:
<u>Step 1: Define</u>
1.20 × 10²⁵ atoms He
<u>Step 2: Identify Conversions</u>
Avogadro's Number
Molar Mass of He - 4.00 g/mol
<u>Step 3: Convert</u>
<u /> = 79.7077 g He
<u>Step 4: Check</u>
<em>We are given 3 sig figs. Follow sig fig rules and round.</em>
79.7077 g He ≈ 79.7 g He
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Certain chemicals can be electrolyzed using electrolytic cells, which are electrochemical cells.
For example, water can be electrolyzed to create gaseous oxygen and gaseous hydrogen with the use of an electrolytic cell.
The following are the three essential parts of electrolytic cells:
Cathode (which is negatively charged for electrolytic cells)
Anode (which is positively charged for electrolytic cells)
Electrolyte
The reactions for each half cell is given by
; E° = 1.50 V
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= 2.24 V – 0.48 V = 1.76 V
Learn more about electrolytic cell:
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Answer:
Explanation:
Temperature and thermal energy are in a direct proportion which means that if temperature of a substance increases, its thermal energy also increases and vice versa.
Hope this helped!
<h3>~AH1807</h3>