Get reliable answers to your questions at Westonci.ca, where our knowledgeable community is always ready to help. Join our platform to connect with experts ready to provide precise answers to your questions in different areas. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.
Sagot :
Answer:
1.497 mol Ir
General Formulas and Concepts:
Math
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
- Left to Right
Chemistry
Atomic Structure
- Reading a Periodic Table
Stoichiometry
- Using Dimensional Analysis
Explanation:
Step 1: Define
287.7 g Ir
Step 2: Identify Conversions
[PT] Molar Mass of Ir - 192.22 g/mol
Step 3: Convert
- Set up: [tex]\displaystyle 287.7 \ g \ Ir(\frac{1 \ mol \ Ir}{192.22 \ g \ Ir})[/tex]
- Multiply/Divide: [tex]\displaystyle 1.49672 \ mol \ Ir[/tex]
Step 4: Check
Follow sig fig rules and round. We are given 4 sig figs.
1.49672 mol Ir ≈ 1.497 mol Ir
Answer:
[tex]\boxed {\boxed {\sf About \ 1.497 \ mol \ Ir }}[/tex]
Explanation:
To convert from grams to moles, we must the molar mass of iridium, which can be found on the Periodic Table.
- Ir: 192.22 g/mol
Use the molar mass as a ratio.
[tex]\frac{ 192.22 \ g \ Ir}{ 1 \ mol \ Ir}[/tex]
Multiply by the given number of grams: 287.7
[tex]287.7 \ g Ir *\frac{ 192.22 \ g \ Ir}{ 1 \ mol \ Ir}[/tex]
Flip the fraction so the grams of Iridium will cancel.
[tex]287.7 \ g Ir *\frac{1 \ mol \ Ir }{ 192.22 \ g \ Ir}[/tex]
[tex]287.7 *\frac{1 \ mol \ Ir }{ 192.22 }[/tex]
[tex]\frac {287.7 \ mol \ Ir }{192.22} \\[/tex]
Divide.
[tex]1.49672251 \ mol \ Ir[/tex]
The original measurement has 4 significant figures, so we must round our answer to 4 sig figs as well. For the answer we calculated, that is the thousandth place.
The 7 in the ten thousandth place tells us to round the 6 up to a 7.
[tex]1.497 \ mol \ Ir[/tex]
There are about 1.497 moles of iridium in 287.7 grams.
We appreciate your time on our site. Don't hesitate to return whenever you have more questions or need further clarification. Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. Thank you for using Westonci.ca. Come back for more in-depth answers to all your queries.