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2 years ago

What is an echo? (1 point)

Chemistry

2 answers:

makvit [3.9K]2 years ago

6 0

The reflection of sound waves, hope this helps :)

zaharov [31]2 years ago

4 0

Answer:

The reflection of sound waves

Explanation:

An echo is a reflection of sound that bounces of of one thing to another.

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Which of the following is true about two neutral atoms of the element gold? (1 point) The nucleus is missing in both. Each has a

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2 years ago

Which of the following organisms would NOT be in the first trophic level of an energy pyramid?

faust18 [17]

dog!

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2 years ago

Read 2 more answers

WILL MARK BRAINLIEST!!!!

Lyrx [107]

Answer:

5.702 mol K₂SO₄

General Formulas and Concepts:

Atomic Structure

Reading a Periodic Table
Compounds
Moles

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 993.6 g K₂SO₄

[Solve] moles K₂SO₄

Step 2: Identify Conversions

[PT] Molar Mass of K: 39.10 g/mol

[PT] Molar Mass of S: 32.07 g/mol

[PT] Molar mass of O: 16.00 g/mol

Molar Mass of K₂SO₄: 2(39.10) + 32.07 + 4(16.00) = 174.27 g/mol

Step 3: Convert

[DA] Set up: $\displaystyle 993.6 \ g \ K_2SO_4(\frac{1 \ mol \ K_2SO_4}{174.27 \ g \ K_2SO_4})$
[DA] Divide [Cancel out units]: $\displaystyle 5.7015 \ mol \ K_2SO_4$

Step 4: Check

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

5.7015 mol K₂SO₄ ≈ 5.702 mol K₂SO₄

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3 years ago

To ensure that a vehicle crash is inelastic, vehicle safety designers add crumple zones to vehicles. A crumple zone is a part of

11111nata11111 [884]

Answer:

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Explanation:

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3 years ago

Select the correct answer.

Ilya [14]

Answer:

C is the answer hope I helped you have a good day by

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2 years ago