A student performed a similar experiment, reacting ammonia with sodium hypochlorite to form nitrogen gas, using 0.5 M solutions of ammonia and sodium hypochlorite. The unbalanced chemical equation and the data from the experiment are given below. Find the point of intersection of the two best-fit equations (solve the system of equations). The x-value will be the mL of ammonia used. Use that to identify the stoichiometric ratio between the two reactants. The y-value will be the amount of nitrogen gas that would be produced at that point. The total volume of each reaction was 50 mL.

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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about what?
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The number of medals awarded to the track team during the season.