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RoseWind [281]
4 years ago
11

A long spring is attached to a wall at one end. A pulse is sent down the spring. When the pulse reaches the wall it bounces back

upside down. At the moment it reaches the wall, a second pulse is sent down the spring.
What happens when the two pulse meet?
Chemistry
1 answer:
slega [8]4 years ago
8 0

Answer: they will meet and make a biger wave then seperat

Explanation: When two or more waves meet, they interact with each other. The interaction of waves with other waves is called wave interference. Wave interference may occur when two waves that are traveling in opposite directions meet. The two waves pass through each other, and this affects their amplitude.

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How to sold equation with periodic table of elements?​
Illusion [34]

In order to balance the chemical equation, you need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side. In order make both sides equal, you will need to multiply the number of atoms in each element until both sides are equal

6 0
3 years ago
Write a balanced net ionic equation for the reaction of aqueous solutions of baking soda (NaHCO3) and acetic acid.(A) HCO3–(aq)
IgorC [24]

<u>Answer:</u> The correct answer is Option C.

<u>Explanation:</u>

Net ionic equation of any reaction does not include any spectator ions.

Spectator ions are defined as the ions which does not get involved in a chemical equation. They are found on both the sides of the chemical reaction when it is present in ionic form.

The chemical equation for the reaction of sodium bicarbonate and acetic acid is given as:

NaHCO_3(aq.)+CH_3COOH(aq.)\rightarrow CH_3COONa(aq.)+H_2O(l)+CO_2(g)

Ionic form of the above equation follows:

Na^+(aq.)+HCO_3^-(aq.)+CH_3COO^-(aq.)+H^+(aq.)\rightarrow CH_3COO^-(aq.)+Na^+(aq.)+H_2O(l)+CO_2(g)

As, sodium and acetate ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation and are spectator ions.

The net ionic equation for the above reaction follows:

HCO_3^-(aq.)+H^+(aq.)\rightarrow CO_2(g)+H_2O(l)

Hence, the correct answer is Option C.

8 0
3 years ago
Calculate the solubility (in M) of cobalt(II) hydroxide, Co(OH)2(s) in H2O. Ksp = 1.10×10-16 at a specific temperature.
Oksanka [162]

Answer:

3.018 x 10⁻⁶ M.

Explanation:

  • Co(OH)₂ dissociates in solution according to the equation:

<em>Co(OH)₂ →</em> <em>Co²⁺ + 2OH⁻.</em>

<em></em>

<em>∵ Ksp = [Co²⁺][OH⁻]² = (s)(2s)² = 4s³.</em>

<em />

∴ 4s³ = 1.10 x 10⁻¹⁶.

∴ s³ = 1.10 x 10⁻¹⁶/4 = 2.75 x 10⁻¹⁷.

∴ s = ∛(2.75 x 10⁻¹⁷) = 3.018 x 10⁻⁶ M.

5 0
3 years ago
A closed system is:
Inga [223]

A closed system is completely closed to the outside environment. Every interaction is transmitted inside that closed system.

3 0
3 years ago
The diagram shows an image produced by a lens.
Katarina [22]

Answer:

I think the answer is X if wrong i´m sorry

Explanation:

7 0
3 years ago
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