Knowledge of the functioning of cells and DNA has led to the creation of new life in laboratories. What is an example of an ethi
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Answer:
1. Sound is a energy (mechanical)produced by vibrating objects and sound energy is movement of energy through particles.
2.Space occupied by the substance
3.<u>Propagation</u> of <u>Sound Wave</u> and <u>particles of the medium</u>
4.High-Frequency(Ultrasonic wave)
Explanation:
1.Sound is the form of energy which causes sensation of hearing to our ear.It is produce by vibrating objects. When the objects vibrate(to and fro motion) ,they pushes the particles of medium creating the region of high density called compression .When the particles moves backward ,they creates a region of low density called Rarefaction.This pattern repeats indefinitely.
2.Volume is the quantity of three dimensional space occupied by substances like solid,liquid and gases. The SI unit of volume is
In metric system unit of volume is liter
3. Longitudinal Waves: Waves in which displacement of the medium particles are parallel(in the same direction) to the propagation of wave.
Sound wave is longitudinal wave.Hence its particles moves in the same direction as the wave (energy)travel.
4.Frequency: The number of times sound wave passes a given point in one second.Its SI unit is Hertz(Hz).
Frequency of vibration decides the Pitch of the sound waves producing them.
A sound wave of High Pitch means it is oscillating rapidly(at high speed).These are also called Ultrasonic waves. These have frequency more than 20000 Hz. Human being can't hear ultrasonic waves.
Given information : Volume of HCl = 32.40 mL
Volume of HCl = 0.0324 L
Concentration of HCl = 0.185 M or 0.185 mol/L (M = mol/L)
Volume of Ca(OH)2 = 27.0 mL
Volume of Ca(OH)2 = 0.027 L
We need to find the concentration of Ca(OH)2.
To find the concentration of Ca(OH)2 we need moles and volume of Ca(OH)2.
Moles of Ca(OH)2 can be calculated using stoichiometry and volume of Ca(OH)2 is already given to us.
Step 1 : Find the moles of HCl using its given volume and concentration.
Moles of HCl = 0.005994 mol HCl
Step 2 : We need to find moles of Ca(OH)2 using mol of HCl with the help of mole ratio.
Mole ratio are the coefficient present in front of the compound in a balanced equation.
Mole ratio of Ca(OH)2 : HCl = 1:2 ( 1 coefficient of Ca(OH)2 and 2 coefficient of HCl)
Moles of Ca(OH)2 = 0.002997 mol Ca(OH)2
Step 3 : Find the concentration of Ca(OH)2 using its moles and volume.
Moles of Ca(OH)2 = 0.002997 mol and volume of Ca(OH)2 = 0.027 L
Concentration of Ca(OH)2 = 0.111 mol/L or 0.111 M