Can someone explain this please? What are sound waves?

Chemistry

2 answers:

In-s [12.5K]3 years ago

5 0

Answer:

sound waves is what causes you and thing with be able to hears sounds and things

Aleks04 [339]3 years ago

5 0

Answer:

A wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air

Explanation:

Sound waves are often simplified to a description in terms of sinusoidal plane waves which are characterized

You might be interested in

Colton has an ice cube that has a mass of 4 grams. He places it in a sealed container and then puts it in the microwave on high.

Bas_tet [7]

I believe the answer is D.

The reason is because mass cannot be destroyed. All the mass can really do is become more of less dense.

5 0

3 years ago

Which of the following reactions is a double displacement reaction? A) HCI (9) - Hz (g) + Cl2 (9) B) HCI (aq) + NaOH (aq) - H2O

Marianna [84]

Answer:

HCI (aq) + NaOH (aq) --> H2O (l) + NaCl (aq)

Explanation:

A double displacement reaction is a type of reaction where two reactants exchange ions to form two new compounds. Here we can see that both the acid and the base exchanged an ion each to for salt and water, 2 new products.

5 0

3 years ago

What evidence indicates that nitric acid (HNO3) is a strong acid?

GREYUIT [131]

Answer:

The presence of hydrogen ions

Explanation:

Nitric acid is formed when hydrogen ions combine with nitrogen oxide ions leading to formation of a strong acid. Wheareas for strong bases the hydroxyl iins must be present, for strong acid, the hydrogen ions contribute to the acidity. Therefore, from the formula of nitric acid, it has hydrogen ions, an indicator of a strong acid.

8 0

3 years ago

What information is important to include when you are describing the weather?

Lemur [1.5K]

Smell is a huge part, some bacteria have a unique smell. Depending on oxygen present..... fermentation for some bacteria. Can be noticed through a pH indicator in a media.
<span>Also many differential stains will assist in this.... </span>
<span>Gram, Capsole, Spore...ect.</span>

5 0

3 years ago

If 42.7 of 0.208 M hydrochloric acid are needed to completely neutralize a solution of calcium hydroxide, how many grams of calc

Montano1993 [528]

Answer:

0.329 g

Explanation:

In the context of this problem, we have a chemical reaction between hydrochloric acid and calcium hydroxide. HCl is the acid here and calcium hydroxide is the base. Hence, we have an acid-base reaction, also known as neutralization reaction.

In a neutralization reaction, water is produced as a product, as well as a salt that we obtain after we exchange the cations: calcium bonds to chloride and hydrogen bonds to hydroxide (the latter is the formation of water). This means we also produce calcium chloride as a product. The overall reaction represents this as:

$Ca(OH)_2(aq)+2 HCl (aq)\rightarrow CaCl_2 (aq)+2 H_2O (l)$

Firslt of all, we wish to find the number of moles of HCl present. Having molarity and volume, this is done by applying the molarity formula. It states that molarity is equal to the rate between moles and volume:

$c_{HCl}=\frac{n_{HCl}}{V_{HCl}}$