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3 years ago

BRAINLIEST Give examples of at least three critical questions of society that science can help answer.

Chemistry

1 answer:

ICE Princess25 [194]3 years ago

3 0

Answer:

1. How did life begin?

2. Are we alone in the universe?

3. What makes us human?

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If we use 18 moles of H2 how many moles of H2O do we make? Use this chemical equation: 6H2 + O2 → 3H2O

Ilya [14]

<h3>Answer:</h3>

9 mol H₂O

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

<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>

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

<u>Stoichiometry</u>

Using Dimensional Analysis
Analyzing reactions RxN

<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Balanced] 6H₂ + O₂ → 3H₂O

[Given] 18 mol H₂

[Solve] mol H₂O

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

[RxN] 6 mol H₂ → 3 mol H₂O

<u>Step 3: Stoich</u>

[DA] Set up conversion: $\displaystyle 18 \ mol \ H_2(\frac{3 \ mol \ H_2O}{6 \ mol \ H_2})$
[DA] Simplify: $\displaystyle 18 \ mol \ H_2(\frac{1 \ mol \ H_2O}{2 \ mol \ H_2})$
[DA] Divide [Cancel out units]: $\displaystyle 9 \ mol \ H_2O$

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3 years ago

Read 2 more answers

Long ago, living things were divided into two main groups: _________

solmaris [256]

Answer:

I think the answer is Prokaryote and Eukaryote

Explanation:

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3 years ago

A balloon moving along a straight path experiences a force of

Angelina_Jolie [31]

The net force is 11.1 because 23.5-12.4 is your net force

hope this helps:)

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Write sentences that completely describe each of the chemical reactions shown in these skeleton equations. 11.1

Natasha2012 [34]

Please upload a photo of your question!

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Describe one benefit and one drawback of using models to represent scientific processes?

AURORKA [14]

<span>Among the benefits; enlarging so that you can see it visually, making something complex and hard to understand to simplify it. One draw back is that not entirely accurate because it is basic. Additionally; models help us to visualize smaller structures that are too small to see properly. However; they do not take all variables into account and thus they may be inaccurate. </span>

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3 years ago