Answer:
There are 342 g/ 95. 2 g/m = 3.59 moles
Explanation:
MgCl2 → Molar mass is 95.2g g/m
This is the mass in one mol so to find out the moles in 342g we have to divide the mass between the molar mass.
342 g/ 95. 2 g/m = 3.59 moles
Sound waves travel faster in denser materials and the more dense the material the faster the sound is
Total volume of the solution formed will be 32.5 liters
Given:
Molarity of solution = 0.0200 m
mass of nacl = 38.0 grams
To Find:
total volume of the solution
Solution: Molarity is defined as the amount of solute present in 1 L of solution. The equation used to determine molarity of the solution follows:
M = given mass of nacl/molar mass of nacl*1/volume of solution
volume of solution = given mass/molar mass*1/molarity
volume = 38/58.5*1/0.02 = 32.5
Hence, volume of solution = 32.5 litres
Learn more about Molarity here:
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The third one because temperature is being used, so a meter stick wouldn’t make sense. You aren’t measuring the length of anything physically. A stopwatch measures time, which is what they are showing in the chart, so the third one is the only one that makes sense.
Pv=nRT
where,p=199, R(constant)=8.314, V=4.67 T=30C=293K
n=pv/RT=0.38 moles
