Three students are asked to discuss the percent errors obtained from this lab and explain what would account for the discrepancies
seen, if any. Select the student that employs correct scientific
reasoning
• Student 1: A source of error could occur if the valve did not fully seal and allowed
gas to escape, this would lower the measured pressure and therefore lower the
molar volume calculated.
Student 2: A source of error could come from adding too much water in the room
temperature water bath causing more hydrogen to be formed and falsely
increasing the molar volume.
Student 3: A source of error that causes the molar volume to be wrong is if the
magnesium was the limiting reactant and therefore not enough hydrogen gas
would be produced.
o
Student 2
O Student 1
Student 3

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.