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zalisa [80]
3 years ago
13

Yard converted to cm

Chemistry
2 answers:
Tomtit [17]3 years ago
7 0
1 yard is 91.44 centimeters
ohaa [14]3 years ago
4 0

1 yd × (3 ft/1 yd) × (12 in/1 ft) × (2.54 cm/1 in) = 91.44 cm

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Answer:

Name the element: Beryllium

Number of shells:  4

Valence electrons: 2

Explanation:

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A student did an experiment to determine the specific heat capacity of a metal alloy. The student put a sample of the alloy in b
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Answer:

a) ∆T=T1-T2

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c) The state in which two substances in physical contact do not share any heat energy. The temperature of two substances in thermal equilibrium is said to be the same. Also see thermodynamics.

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What is the volume of 40.0 grams of argon gas at STP ?
MrRa [10]

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>

  • States of Matter

<u>Stoichiometry</u>

  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

[Given] 40.0 g Ar

[Solve] L Ar

<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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Explain why the elements of groups 1 and 7 are mostly used in<br> the form of compound
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Group 1 and group 7 of element group consists of alkali metal, which are generally combined with other elements in nature, so they have properties of compound
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