Module 4 CP Chem Review

How many significant figures: 153.0 mL

How many significant figures: 0.001 g

How many significant figures: 45,000 km

Ms. Evans asks you to measure the length of a piece of yarn. You measure it three times and get the following measurements: 8cm, 2.3cm, and 14.6cm. Are you accurate, precise, neither, or both?

Ms. Evans asks you to weigh three samples of 12.7g of sodium chloride (NaCl). You gather the following samples: 12.3g, 12.5g, and 12.6g. Were your measurements accurate, precise, neither, or both?

Find the sum 3.38 + 1.4 + 3.65

I am conducting an experiment. I think the metal I'm working with is copper. I find that the metal has a density of 8.12 g/cm³. If my metal is copper, what is my percent error? (Hint: copper has a density of 8.96 g/cm³)

Apple claims that the new iPhone's mass is 14.2g. You decide to measure the mass of your iPhone and find it to be 17.36g. What is the percent error?