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rusak2 [61]
3 years ago
5

Using a spring as an example, explain the compressions and rarefactions of a wave.

Chemistry
1 answer:
Vladimir [108]3 years ago
5 0

Answer:

Compressions are the parts where the coils are close together.

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Write a balanced equation for the complete combustion of solid palmitic acid. Remember that oxygen (O2(g)) is necessary for the
Alina [70]

Answer:

C₁₆H₃₂O₂ (s) + 22O₂(g) → 16CO₂(g) + 16H₂O(g)

Explanation:

In order to determine a combustion reaction we should know that:

Reactants are: X compound and O₂

Products are: CO₂ and H₂O

In this case, the X compound is the solid palmitic acid: C₁₆H₃₂O₂

The balanced equation will be:

C₁₆H₃₂O₂ (s) + 22O₂(g) → 16CO₂(g) + 16H₂O(g)

3 0
3 years ago
How many molecules are present in 2.00 mol of KCl?
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Answer:

The question specified 2 moles of potassium chloride. Clearly, there are 2 moles of chloride ions. How many moles of chloride ions in 95.2 g

5 0
3 years ago
An object was measured by a worker as
Gre4nikov [31]

Answer:

\boxed{2.8 \, \%}

Explanation:

\text{Percent error} = \dfrac{\lvert \text{Measured - Actual}\lvert}{ \text{Actual}} \times100 \, \%

Data:

Predicted = 17.4 cm

     Actual = 17.9 cm

Calculation:

\text{Percent error} = \dfrac{\lvert 17.4 - 17.9\lvert}{17.9} \times 100 \, \% \\\\= \dfrac{\lvert-0.5\lvert}{17.9} \times 100 \, \% = \dfrac{0.5}{17.9} \times 100 \, \% \\\\= 0.028 \times 100 \, \% = \textbf{2.8 \%}\\\\\text{The percent error in the measurement is } \boxed{\textbf{2.8 \%}}

6 0
3 years ago
Josh used several different liquid chemicals for an experiment in his chemistry class. After completing the experiment, the chem
Sliva [168]
The answer is A (No; different types of chemical waste should not be mixed together).

This should be complete common sense, but the answer B is incorrect because chemical SHOULD NOT be poured down a drain because It can go out into the sewer. C is wrong because it can go through the trash can or into the dump and contaminate other things.
3 0
3 years ago
Which of the following statements is correct?
WITCHER [35]

Answer: A

Explanation: i took the test

5 0
3 years ago
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