2 years ago

Which of the following statements correctly describes a difference between mechanical waves and electromagnetic waves?

2 answers:

5 0

Answer:

<h2>Which of the following statements correctly describes a difference between mechanical waves and electromagnetic waves?</h2><h2><em>:- Mechanical waves require a medium to travel through, whereas electromagnetic waves can travel through empty space.</em></h2>

<em>is the correct</em>

<em>pls mark me as brainliest pls </em>

<h3 />

Readme [11.4K]2 years ago

5 0

The answer is D
Explanation: I want points

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Question 3 of 10

KATRIN_1 [288]

Answer:A

Explanation:

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3 years ago

3. the closeness of a measurment to its true value is a measure of its ____ ?

valkas [14]

The closeness of a measurement to its true value is a measure of its Accuracy.

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3 years ago

g Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no r

Mrac [35]

Answer:

CuBr₂(aq) + Pb(CH₃COO)₂(aq) → Cu(CH₃COO)₂(aq) + PbBr₂ (s)↓

Explanation:

We identify the reactants:

CuBr₂ and Pb(CH₃COO)₂

The products will be: Cu(CH₃COO)₂ and PbBr₂

You may know these information:

Salts from acetate are soluble.

Bromide can make solid salts with these cations: Ag⁺, Pb²⁺, Hg₂²⁺, Cu⁺

PbBr₂ is formed, so this will be our precipitate

The equation is:

CuBr₂(aq) + Pb(CH₃COO)₂(aq) → Cu(CH₃COO)₂(aq) + PbBr₂ (s)↓

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3 years ago

Where does the 'Equiv' come from?

slega [8]

Explanation:

Equiv means equivalent ...

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3 years ago

What is the percent by mass of a solution containing 4. 0g of solute in 100g of water? (Percent by mass formula: (mass of solute

Hoochie [10]

B
mass of solute - 4.0 g
mass of solution - 100g + 4.0g = 104g
4/104 = 0.03846
0.03846 • 100 = 3.8%

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2 years ago