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3 years ago

What are some uses we might have for standing waves?

Chemistry

1 answer:

VARVARA [1.3K]3 years ago

5 0

Any waves traveling along the medium will reflect back when they reach the end.

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A gas sealed in a drum container occupies 7.70 L at a sizzling 325C degrees. What will the volume be if the drum is quickly chi

grigory [225]

The volume of the drum after chilled quickly is 3.6 L.

<u>Explanation:</u>

As per the Charles Law, for any gas at constant pressure, volume of the gas is in direct proportion with the temperature measured in Kelvin. As the temperature increases, the gas expands and vice versa.

$$\frac{V1}{T1} = \frac{V2}{T2} \\$

After chilling the drum, the volume will get reduced and it can be found as,

V2 = $$\frac{V1T2}{T1}$

= $$\frac{7.7 L \times 282 K}{598 K}$

= 3.6 L

Here the drum is chilled quickly, that is temperature is reduced and so the volume also decreases.

3 0

3 years ago

1. What type of circuit is in the diagram?<br> parallel circuit<br> series circuit

devlian [24]

Answer:

A series circuit is defined as the circuit in which a number of resistances are connected one after the other.. In a series circuit, the flow of current follows a single path.

A parallel circuit is defined as the circuit in which a number of resistances are linked across each other in such a way that one terminal of each resistance is connected to form a junction point while the remaining end is also connected to form another point.

You havent added the diagram so i cant tell you the answer, but i added the definition of each circuit, see if that helps!

5 0

3 years ago

Is calcium hydroxide a strong alkali? if no, why? if yes, why? i really don’t understand

fiasKO [112]

Answer:

Yes

Explanation:

Neither Calcium nor hydrogen nor oxygen are alkali metals

Alkali metals are Group 1 elements
They are very soft and mellable.
H,Li,Na,K,Cs,Fr are included in it however H is not a actual member

Here

Ca(OH)_2 is the compound

Vant Hoff factor is 3

As it's greater than 1 it's a very strong base .

The pOH of this comes around 1.5 to 1.3

So very heavy ionic dissociation

Strong Alkali

3 0

2 years ago

When solutions of silver nitrate and sodium chloride are mixed, a precipitation reaction occurs. What mass of precipitate can be

Bas_tet [7]

Explanation:

The given precipitation reaction will be as follows.

$AgNO_{3}(aq) + NaCl(aq) \rightarrow AgCl(s) + NaNO_{3}(aq)$

Here, AgCl is the precipitate which is formed.

It is known that molarity is the number of moles present in a liter of solution.

Mathematically, Molarity = $\frac{\text{no. of moles}}{\text{volume in liter}}$

It is given that volume is 1.14 L and molarity is 0.269 M. Therefore, calculate number of moles as follows.

Molarity = $\frac{\text{no. of moles}}{\text{volume in liter}}$

0.269 M = $\frac{\text{no. of moles}}{1.14 L}$

no. of moles = 0.306 mol

As molar mass of AgCl is 143.32 g/mol. Also, relation between number of moles and mass is as follows.

No. of moles = $\frac{mass}{\text{molar mass}}$

0.307 mol = $\frac{mass}{143.32 g/mol}$

mass = 43.99 g

Thus, we can conclude that mass of precipitate produced is 43.99 g.

8 0

3 years ago

When dissolved in water, an acid or a base breaks down into a proton and an electron. two negative ions. a positive and a negati

dlinn [17]

Answer:

a positive and a negative ion

Explanation:

When an acid dissolves in water, it produces positive hydrogen [H⁺] or hydronium [H₃O⁺] ions.

When a base dissolves in water, it produces negative hydroxide [OH⁻] ions.

Hope this helps.

4 0

3 years ago

What are some uses we might have for standing waves?​

What are some uses we might have for standing waves?