An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the te
mperature was 295k and volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1 mL atm K-1 mol-1.
1) How many grams of Magnesium metal were used?
2) If the vapor pressure of water had not been taken into account, what would have been the calculated value of R?
3) If the springe volume had been incorrectly read, giving a calculated system volume of 25.6 mL, what would have been the percent error in the calculated value of R?
1) How many grams of Magnesium metal were used?
2) If the vapor pressure of water had not been taken into account, what would have been the calculated value of R?
3) If the springe volume had been incorrectly read, giving a calculated system volume of 25.6 mL, what would have been the percent error in the calculated value of R?
1 answer:
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Answer:
d. A water particle and an air particle
Explanation:
The force of gravity (F) between two objects of masses m1 and m2 and separated by a distance r is given as:
where G is the gravitational constant
This force is therefore, directly proportional to the masses and inversely related to the distance between them.
Based on the given options, since the masses of the water and air particles are very small (masses of earth, moon and sun is relatively huge), the gravitational force between them would be negligible and difficult to measure.