scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 1,268
Objective To practice the various techniques of measuring masses using the lab balance Then to gain the experience in the techniques of handling lab equipment1 Check your balance to make sure that the pointer is calibrated or zeroed If necessary consult your teacher for an adjustment2 Place a penny on the balance pan Move the riders until the pointer is balanced Record the mass of the penny3 Repeat step two for objects listed below-Measure and record the mass of a watch glass-Obtain 20-25 salt crystals on a piece of paper Transfer them to the watch glass carefully-Measure and record the combined mass of the watch glass and the calcium chloride Make sure you record the time it took you to make this measurement-Using your micro spatula spread the crystals out on the watch glass and record you observations-Measure and record the mass of a piece of filter paper-Obtain some salt on a piece of paper Using your micro spatula place one scoop of the sodium chloride on the piece of filter paper Record the combined mass-Add another scoop of salt on to the filter paper and record the combined mass-Add a third scoop to the filter paper Record that measurement then discard the paper and the salt3 Mass of a watch glass 5582 grams4 Mass of a 150 ml beaker 5843 grams5 Mass of a 100 ml graduated cylinder 6525 grams6 Mass of a watch glass 5583 grams7 Mass of a Watch glass plus Calcium chloride 5951 grams10 Mass of filter paper plus one scoop of NaCl 288 grams11 Mass of filter paper plus two scoops 409 grams12 Mass of filter paper plus three scoops 734 grams13 Mass of 150 ml beaker 6680 grams14 Mass of 150 ml beaker plus 30 ml water 9521 grams15 Mass of inflated balloon 154 grams16 Mass of deflated balloon 146 gramsA CaCl2 crystals added to the watch
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA