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3 years ago

Describe the properties of noble gases. Based on their electronic arrangement, explain whether they can exist alone in nature.

Chemistry

1 answer:

Firdavs [7]3 years ago

5 0

Answer:

they have a full outer shell, and cannot live alone In nature as they cannot bind with other gases

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What type of claim must be supported by scientifically valid evidence for it to be approved for use on a food label? A. Health c

Lelu [443]

Option A. Health claim

Health claim must be supported by scientifically valid evidence to be approved in using for food label.

This is also a food guide to all consumers the food content implied by manufacturers to their products.

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4 years ago

Read 2 more answers

Help me ples HELP HELP HELP HELP HELP

Darya [45]

Answer:

Explanation:autotroph and photosynthesis

sorry if I am wrong I am dumb. :( :(

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3 years ago

How many moles of iron is 6.022 x 10^22 atoms of iron? (Report answer as a number rounded to one place past the decimal.) *

yuradex [85]

<h3>Answer:</h3>

$\displaystyle 0.1 \ mol \ Fe$

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

6.022 × 10²² atoms Fe (iron)

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

Avogadro's Number

<u>Step 3: Convert</u>

Set up: $\displaystyle 6.022 \cdot 10^{22} \ atoms \ Fe(\frac{1 \ mol \ Fe}{6.022 \cdot 10^{23} \ atoms \ Fe})$
Divide: $\displaystyle 0.1 \ mol \ Fe$

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3 years ago

Hess’s Law can be used to determine the heat of reaction in the lab. True False

Feliz [49]

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3 years ago

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MariettaO [177]

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