Answer:
The sound wave travelled more quickly through the glass of water than the metal pole.
The sound wave travelled the fastest through the helium.
The sound wave travelled the slowest through the metal pole.
These 3 are most likely true.
<u>If you have to </u><u>pick</u><u> </u><u>just</u><u> </u><u>one</u><u>,</u> the sound wave travelled the fastest through the helium.
Answer : Option B) Row 1, Volume decreases when pressure increases.
Explanation : According to the boyle's law, when the pressure of the gas molecules are increased from 2 atm to 3 atm creates a decrease in volume of the gas which then increases the rate of collision of the molecules and makes it more compact than it was before.
Density of gasoline is 0.737 g/mL and volume of tank is 13.0 gal.
Since, 1 US gal=3.78 L
Volume of tank in L will be:
Also, 1 L=1000 mL
Thus,
Mass of gasoline can be calculated as follows:
m=d×V
Here, d is density and V is volume thus,
Therefore, mass of gasoline will be 
.
Answer:
use this formula it will help u .
Explanation:
If 60 ml of ethanol is diluted to a final volume of 400 ml, you create a 35 % ethanol solution.
First, realize that you creating a solution with that contains a polar solute (ethanol) with a polar solvent (water). Remember that "like dissolves like."
If you pour 60 ml of ethanol in a volumetric flask, you add 340 ml of water to dilute this solution to a final volume of 400 ml.
Volumetric flasks are designed to make or dilute solutions to specified final volume.
Since you have 60 ml of ethanol in a total solution of 400 ml, the percentage of ethanol is 35 %.
This result is obtained in the following manner.
ml/400. ml. = .35
.35 x 100% = 35 %
