At a festival, spherical balloons with a radius of are to be inflated with hot air and released. The air at the festival will have a temperature of and must be heated to to make the balloons float. of propane fuel are available to be burned to heat the air. Calculate the maximum number of balloons that can be inflated with hot air. Here are some data you may find useful:
Specific heat capacity of air:
Density of air at:
Density of propane at:
Formation enthalpy of propane at:
Any other data you need should be taken from the ALEKS Data resource.

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

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