Answer:
4.3 × 10⁻⁵ M s⁻¹
Explanation:
Step 1: Given data
- Rate constant (k): 2.20 × 10⁷ M⁻¹s⁻¹
- Concentration of NO ([NO]): 3.3 × 10⁻⁶ M
- Concentration of O₃ ([O₃]): 5.9 × 10⁻⁷ M
- First order with respect to both NO and O₃
Step 2: Write the balanced reaction
NO + O₃ ⇒ NO₂ + O₂
Step 3: Calculate the reaction rate
The rate law is:
rate = k × [NO] × [O₃]
rate = 2.20 × 10⁷ M⁻¹s⁻¹ × 3.3 × 10⁻⁶ M × 5.9 × 10⁻⁷ M
rate = 4.3 × 10⁻⁵ M s⁻¹
Answer:
Atoms
Explanation:
Atoms are widely believed to be the most fundamental particle of matter and their basic building blocks. When atoms combines together, they form compounds. Molecules are another units of matter that are made up of tiny particles of atoms.
Answer:
Acid seeps into the ground and dissolves rock such as Limestone
Explanation:
Good luck on ur Test!!
The answer is: [B]: 1.89 * 10²³ .
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PV = nRT ; is the equation for "STP" conditions; that is, the "ideal gas equation" .
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i.e. when Pressure, "P" = 1.00 atm;
Temperature, "T" = 273 K;
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R = the ideal gas constant = ((0.08206 L-atm/K-mol)
n = number of moles;
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So, we plug in our known values:
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<span>(1.00atm) (7.02L) = ("n" mol) (0.08206 L-atm/K-mol) (273K); </span>
<span>_____________________________________________
</span>→ 7.02 L·atm = (? mol) (22.4 L·<span>atm/mol) .
</span>
(Note that t<span>he Molar Volume of a gas at STP is a constant using Avogadro's value of </span>22.4 L / mol. 1 mol of any ideal gas at STP occupies 22.4 L. An ideal gas takes the shape of its container)..
<span>_______________________________________________________
</span> → Divide EACH side of the equation by "(22.4 L·atm/mol)" ;
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→ 7.02 L·atm / = ("n" mol) (22.4 L·atm/mol) ;
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→ 7.02 L·atm / (22.4 L·atm/mol) =
[("n" mol) (22.4 L·atm/mol)]/(22.4 L·atm/mol);
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<span>to get:
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</span>→ n = <span>0.313 mol ;
</span>_____________________________________________________
Note: 1 mole = 1 mol = 6.022 * 10²³ molecules.
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→ So, 0.313 mol Cl₂ (g) molecules * [(6.022 * 10²³ molecules) / (1 mol)] =
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→ [(0.313) * (6.022 *10²³) ] molecules of Cl₂ (g) ;
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→ = 1.88 * 10²³ molecules of Cl₂ g ;
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→ which most closely corresponds with answer choice:
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[B]: 1.89 * 10²³ .
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