Answer:
The primary means of conveying messages between human are verbal, nonverbal, and visual.
Explanation:
1. Verbal communication depends on words to deliver meaning.
2. Nonverbal communication occurs when meaning or messages are sent or received without the use of words.
3. Visual communication utilizes drawings, illustrations, pictures, colors, graphs, charts, and signs to share meaning.
It will occupy 18 L volume when the pressure is changed to 0. 5 atm and the temperature remain constant.
Calculation,
According to Boyle law, the pressure of a given quantity of gas varies inversely with its volume at constant temperature.
.....(i)
- is initial pressure = 3 atm
- is initial volume = 3L
- k is constant
(ii)
- is final pressure = ?
- is final volume = 0.5atm
- k is constant
Combining equation (i) and (ii). we get,
3 atm× 3L= × 0.5atm
= 3 atm× 3L/0.5atm = 18 L
Boyle law used during respiration or breathing.
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Answer:
It is an example of a precipitation reaction. Soap contains the conjugate bases of fatty acids, and these anions (carboxylates of fatty acids) tend to form insoluble salts with magnesium and calcium cations.
Explanation:
Usual soaps are made by a reaction called saponification, in which triglycerides (which are the main components of animal and vegetal fats and oils) react with a strong base (like KOH or NaOH), breaking the triglyceride into three fatty acid conjugate bases (carboxylates) and a molecule of glycerol.
These fatty acid conjugate bases are formed by a long saturated carbon chain and an ionised tip (i attached the structure of a generic fatty acid carboxylate). These anions form very insoluble salts with Calcium of Magnesium cations, and thus a precipitate is formed, therefore the answer is B.
Answer:
As the frequency increases, the wavelength decreases. ... (a) For a given sound, as the temperature increases, what happens to the frequency? There is no change in frequency. The speed of sound increases by about 0.5 m/s for each degree Celsius when the air temperature rises.
Answer: 1.09 kPa
Explanation:
Given that,
Original volume V1 = 3.2 L
Original pressure P1 = 2.8 kPa
New pressure P2 = ?
New volume V2 = 8.1 L
Since pressure and volume are given While temperature is constant, apply Boyle's law
P1V1 = P2V2
2.8 kPa x 3.2L = P2 x 8.1L
8.96 kPa L = P2 x 8.2L
P2 = 8.96 kPa L / 8.2L
P2 = 1.09 kPa
Thus, the pressure of the gas would be 1.09 kPa