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4 years ago

Which of the following subject areas contains questions that can be answered by science?

Chemistry

1 answer:

nikdorinn [45]4 years ago

3 0

Answer:

Astronomy is a subject area which contain a question that can be answered by Science.

Explanation:

Hope This Helps?

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How many hydrogen atoms are in the compound represented by the following bond-line drawing? ОН

Ganezh [65]

Answer:

Theres no drawing

Explanation:

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3 years ago

What is the pauli exclusion principle and how does it apply to electron configuration?

mamaluj [8]

Answer:

pauli exclusion principle states that no two electrons in the same orbital can have the same spin.

Explanation:

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3 years ago

How many moles of ethyl alcohol, C2H6O, are in a 16.0 g sample

Anon25 [30]

Moles = mass/molar mass, so n(C2H6O)= 16.0 / (12+12+(1x6)+16)
=0.348 (to correct sig figs)

8 0

3 years ago

3. How many grams are in 9.015 x 1035 atoms of Cobalt?

pentagon [3]

Answer:

8.822 × 10¹³ g Co

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Explanation:

Step 1: Define

9.015 × 10³⁵ atoms Co

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of Co - 58.93 g/mol

Step 3: Convert

$9.015 \cdot 10^{35} \ atoms \ Co(\frac{1 \ mol \ Co}{6.022 \cdot 10^{23} \ atoms \ Co} )(\frac{58.93 \ g \ Co}{1 \ mol \ Co} )$ = 8.82189 × 10¹³ g Co

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

8.82189 × 10¹³ g Co ≈ 8.822 × 10¹³ g Co

3 0

3 years ago

Hello! Can you please help me with this because I don’t get it at all. Thanks.

denpristay [2]

Answer:

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3 years ago

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