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inessss [21]
3 years ago
13

How many moles are in a balloon that is 50.2L, 755 mmHg and -22.0C?

Chemistry
1 answer:
Inessa05 [86]3 years ago
8 0

Answer:

n ≈ 2.42 moles

General Formulas and Concepts:

<u>Chem</u>

Ideal Gas Law: PV = nRT

  • P is pressure in mmHg
  • V is volume in liters
  • n is number of moles
  • R is a constant (62.4 L · mmHg/mol · k)
  • T is temperature in Kelvins

K = °C + 273

Explanation:

<u>Step 1: Define</u>

V = 50.2 L

P = 755 mmHg

T = -22.0°C = 251 K

<u>Step 2: Find moles </u><em><u>n</u></em>

(755 mmHg)(50.2 L) = n(62.4 L · mmHg/mol · k)(251 K)

37901 mmHg · L = n(15662.4 L · mmHg/mol)

n = 2.41987 moles

<u>Step 3: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules.</em>

2.41987 moles ≈ 2.42 moles

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