Meters for mass kilograms for volume cubic meters for density kilograms per cubic meter
According to Boyle's Law, volume is inversely proportional to pressure. It means
if the volume of a gas goes up the pressure goes down and if the volume of the gas goes up the pressure goes down. When the pressure of air inside the inflated balloon is more than the atmospheric pressure outside the balloon. And also when the density inside is greater than the density outside. The molecules inside the balloon move and bang around the inner walls which produces force, which provides the pressure of an enclosed air.
All the planets revolve around the sun counter clockwise and rotate on hteir axis counterclockwise except venus and neptune.
Answer:
68 readings.
Explanation:
We need to take this problem as a statistic problem where the normal distribution table help us.
We can start considerating that X is the temperature of the solution, then
For a confidence level of 90% our 
is 1.645
Therefore,
Substituting for 
and re-arrange for n, we have that n is equal to
We need to make 68 readings for have a probability of 90% and our average is within 
