Answer:
1.43 × 10²⁴ atoms Kr
General Formulas and Concepts:
<u>Chemistry - Atomic Structure</u>
- Using Dimensional Analysis
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
Explanation:
<u>Step 1: Define</u>
2.37 mol Kr
<u>Step 2: Convert</u>
<u /> = 1.42721 × 10²⁴ atoms Kr
<u>Step 3: Check</u>
<em>We are given 3 sig figs. Follow sig fig rules and round.</em>
1.42721 × 10²⁴ atoms Kr ≈ 1.43 × 10²⁴ atoms Kr
Water and sodium oxide have different properties because of their nature as explained below.
<h3><u>Explanation:</u></h3>
Sodium oxide is a oxide of metallic sodium, while water is an oxide of hydrogen. So sodium oxide is a metallic oxide, while water is a non metallic oxide. Sodium oxide is a basic oxide, while water is neutral. As state of matter is concerned, sodium oxide is solid in normal room temperature, while water is liquid in normal room temperature. Water is a polar covalent molecule with partial charges on oxygen, but sodium oxide is an ionic molecule.
So all these factors contribute to very different properties of both sodium oxide and water.
Answer:
Correct option is
A
Explanation:
The number of molecules of CO involves in the slowest step will be 0 because CO is not involve in the slowest step i.e. rate determing step.
Hey there!:
Molar mass CO₂ = 44.01 g/mol
44.01 g CO₂ ------------------- 22.4 L ( at STP )
409 g CO₂ ---------------------- Volume ??
Volume = ( 409 x 22.4 ) / 44.01
Volume = 9161.6 / 44.01
Volume = 208.17 L
Hope this helps!
Answer:
The earliest and most direct observational evidence of the validity of the speculation are the expansion of the universe in step with law of nature (as indicated by the red shifts of galaxies), discovery and measurement of the cosmic microwave background and therefore the relative abundances of sunshine elements produced by explosion.
Explanation: