Answer:
23.8
Explanation:
Formula
weight % = weight of solute/ weight of solution x 100
weight of solution = weight of salt + weight of water
weight of solution = 1.62 lb + 5.20 lb = 6.82 lb
weight % = 1.62 / 6,82 x 100
weight % = 0.238 x 100
weight % = 23.8
Answer: m= 6.2 g Ba
Explanation: Solution:
0.045 moles Ba x 137 g Ba / 1 mole Ba
= 6.2 g Ba
Answer:
The formula of the hydrate of the sodium sulfate is :
Explanation:
Mass of hydrated sodium sulfate = 40.15 gram
Mass of completely dehydrated sodium sulfate = 21.27 gram
Mass of water molecules present in hydrated sodium sulfate =x
40.15 gram = 21.27 gram + x (Law of conservation of mass)
x = 40.15 gram - 21.27 gram = 18.88 g
Moles of water = 
Moles of sodium sulfate =
Whole number ratio of sodium sulfate and water:
Sodium sulfate =
Water =
The formula of hydrate be 
So, the formula of the hydrate of the sodium sulfate is :
Answer:
In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. In water waves, energy is transferred through the vibration of the water particles.