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3 years ago

The length of a desk is 3.5 feet. how many centimeters is the length

Chemistry

2 answers:

Anastasy [175]3 years ago

5 0

Answer: 3.5 Feet is equivalent to 106.68 centimeters OR 107 centimeters rounded.

Delvig [45]3 years ago

4 0

1 foot = 30.48 cm
3.5 ft * 30.48 cm = 106.68 cm

Answer = 106.68 cm

Hope it helps :)
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Answer:

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General Formulas and Concepts:

Atomic Structure

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

Aqueous Solutions

States of Matter

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 40.0 g Ar

[Solve] L Ar

Step 2: Identify Conversions

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

[STP] 22.4 L = 1 mol

Step 3: Convert

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

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

24.9235 L Ar ≈ 24.9 L Ar

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