A precipitation reaction is one in which dissolved substance react to form a solid product.
What are the examples of precipitation reaction ?
AgNo3+ CaCl2→AgCl + Ca(No3
Fehling's test .
Precipitation reaction are useful to test whether substance present in a solution .
Precipitation is used to remove metal ions from aqueous solution .
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The correct type of heat transfer for A, B, and C are conduction, convection and radiation respectively.
<h3>What is heat transfer?</h3>
Heat transfer is a process in which amount of heat will be transferred from one object to any other object by various means.
- In type A, heat is transferred through conduction process as in this transfer takes place due to direct contact of particles.
- In type B, heat is transferred through the convection process as in that process transfer of heat takes place through the medium.
- In type C, heat transfer done by the radiation as in that transfer through empty space.
Hence at A, B and C heat transfer done through conduction, convection and radiation respectively.
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Answer: Water Particles!
Explanation: You are correct! Water particles help the sound waves to travel back and forth.
Answer:
The volume at STP is 0,441 L (441ml)
Explanation:
We use the gas formula, which results from the combination of the Boyle, Charles and Gay-Lussac laws. According to which at a constant mass, temperature, pressure and volume vary, keeping constant PV / T. The conditions STP are 1 atm of pressure and 273K of temperature. We convert the unit Celsius into Kelvin, the volume in ml into L and the pressure in mmHg into atm:
0 ° C = 273K, 20 ° C = 273 + 20 = 293K ; 500/1000= 0,500 L
760mmHg---1 atm
720mmHg----x= (720mmHgx 1 atm)/760mmHg= 0,947 atm
P1xV1/T1= P2xV2/T2
V2=((P1xV1/T1)xT2)/P2
V2=((0,947atmx0,500L/293K)x273K)/1 atm
<em>V2= 0,441 L</em>
Gases have three characteristic properties: (1) they are easy to compress<span>, (2) they expand to </span>fill<span> their containers, and (3) they occupy far more space than the liquids or solids from which they form. An internal</span>combustion engine<span> provides a good example of the ease with which gases can be compressed.</span>