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Igoryamba
3 years ago
15

How many neutrons does tin-112 have?​

Chemistry
2 answers:
Katarina [22]3 years ago
8 0

Answer:

69 neutrons

Explanation:

Svetllana [295]3 years ago
7 0
Tin stable isotope number 1: 112Sn
NEUTRONS : 62
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What is the volume of 40.0 grams of argon gas at STP ?
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Answer:

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General Formulas and Concepts:

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Moles
  • STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

<u>Aqueous Solutions</u>

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Explanation:

<u>Step 1: Define</u>

[Given] 40.0 g Ar

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<u>Step 2: Identify Conversions</u>

[PT] Molar Mass of Ar - 39.95 g/mol

[STP] 22.4 L = 1 mol

<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                       \displaystyle 40.0 \ g \ Ar(\frac{1 \ mol \ Ar}{39.95 \ g \ Ar})(\frac{22.4 \ L \ Ar}{1 \ mol \ Ar})
  2. [DA] Divide/Multiply [Cancel out units]:                                                         \displaystyle 24.9235 \ L \ Ar

<u>Step 4: Check</u>

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

24.9235 L Ar ≈ 24.9 L Ar

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