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m_a_m_a [10]
3 years ago
10

Explain why equilibrium arrows are used in the ionization equations for some acids

Chemistry
1 answer:
nevsk [136]3 years ago
5 0
Weak acids ionise partially and their ionisation is reversible and the ions may react to give back the acid molecule (sorry i'm not sure if i am answering your question though)
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A mixture which contains more than one phase is called .
kirza4 [7]
This is a heterogeneous mixture. 

6 0
3 years ago
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Which phrase best describes the salinity of ocean water?
mojhsa [17]

Answer:

Number of grams of mineral salt in one liter of water

.

Explanation:

Salinity :

It is the concentration of dissolved salts .

Salinity means the saltiness or the dissolved salt component in the water body . It is defined as mass (in gram) of the dissolved matter in the water bodies .

salts found in ocean water are :

Salts of chlorides, sulfates , sodium , magnesium, potassium  and calcium

For example :  world's oceans salinity is 3.5% parts per thousand (g/L) . It means 3.5 g of salt is present in 1 L of seawater .

Note : Sodium chloride is major salt found in ocean . But it is not the only salt present (other salts are also found) . So D can't be the answer

8 0
3 years ago
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The speed of light is 300,000,000 m/s. What is the frequency of a wave with a wavelength of 6 meters?
Orlov [11]

Answer:

50,000,000 Hz

Explanation:

<em>Rearrange the formula:</em>

wave speed = frequency × wavelength → frequency = wave speed ÷ wavelength

wave speed = 300,000,000m/s

wavelength = 6m

<em>Substitute in the values:</em>

frequency = 300,000,000 ÷ 6

frequency = 50,000,000 Hz

Hope this helps!

8 0
3 years ago
A sample of oxygen gas occupies a volume of 2.,0cm3 at pressure of 700K pa. what will be pressure of the same sample occupies a
expeople1 [14]

Answer:

The pressure will be 933.33 Kpa

Explanation:

Given that:

Volume V₁ = 200 cm³  (note, there is a mistake in the volume. It is supposed to be 200 cm³)

Pressure P₁ = 700 Kpa

Pressure P₂ = ??? (unknown)

Volume V₂ = 150 cm³

Temperature = constant

Using Boyle's law:

PV = constant

i.e.

P₁V₁ = P₂V₂

700 Kpa × 200 cm³ = P₂ × 150 cm³

P₂ = (700 Kpa × 200 cm³)/150 cm³

P₂ = 933.33 Kpa

7 0
3 years ago
In the image to the right, a student is completing an experiment. What should the student do in order to follow the safety guide
attashe74 [19]

Wear gloves when handling chemicals.

Make sure that none of the liquids near the Bunsen burner are flammable.

Explanation:

The safety precautions the student must apply while completing his experiment is that he/she must wear gloves while handling the chemicals and they must make sure that none of the liquids near the Bunsen burner are flammable.

  • Safety guidelines provides a detailed and careful way to carry out experiment and observations in the laboratory.
  • This is all in a bid to accidents in the workspace.
  • It is a good practices to wear gloves and laboratory coat while handling chemicals.
  • Also make sure to put out the Bunsen burner when not in use.
  • Keep papers and books away from the work area. Chemicals and papers are not friends.
  • Ensure that flammable liquids are not close to the Burner.

learn more:

Safety cautions brainly.com/question/4543399

#learnwithBrainly

7 0
3 years ago
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