vint) ✓ Saved Jose the correct relationship(s) in the foll 0.01 cm = 1m 1 cm = 100m 100 cm = 1m 0.01 m =1 cm

What is meàn Tt mses fo measire fle dersity A rectangular solid measures 2.55 cm by 1.20 cm by 4.15 cm on each side. If it weighs 110.989 g, what is its density? 2.55cm x 1.20 cmx 4.15cm=/2.699 cm3 16.9899 12.6699 cm = 8.7399 d= 9.00 An unknown irregular solid weighing 136.092 g is dropped into a graduated cylinder containing 50.0 mL of water. If the water level rises to 65.5 mL, what is the density of the material? 65.5m-50.0 mL=15.5mL 136.0929-8.780 15.5mL A thin sheet of lead measures 15.5 cm by 23.0 cm and weighs 0.627 g. If the density of lead is 11.34 how thick is the sheet of lead? Cm3 15.5 cm x 23.0 cm= 35 6.5cm' 11.34=0.627g %3D 356.5ch?=1.75876 Basic Chemistry Laboratory Manual 19

Sulfur makes up what percentage of the mass of the human E %S = 0.2 %3D What is the mass of phosphorus in a 45 kg person? mass of P = TOOLS x10 % &

g) A student is examining a bacterium under the microscope. The E. coli bacterial cell has a mass of m = 0.400 fg (where a femtogram, fg, is 10- -15 and is swimming at a velocity of v = 6.00 μm/s, with an uncertainty in the velocity of 1.00 %. E. coli bacterial cells are around 1 μm (10-6 m) in length. The student is supposed to observe the bacterium and make a drawing. However, the student, having just learned about the Heisenberg uncertainty principle in physics class, complains that she cannot make the drawing. She claims that the uncertainty of the bacterium's position is greater than the microscope's viewing field, and the bacterium is thus impossible to locate. Part A What is the uncertainty of the position of the bacterium? Express your answer with the appropriate units. ► View Available Hint(s) ☐☐ Submit 00 xa μA Xh Ax = Value 016 Previous Answers X.10n Units X ?

make sure the answers have the correct number of significant digits

1. Convert 168 nm3 to ft3.   a.5.93 x 10exp-16 ft^3b.5.93 x 10exp-24 ft^3c.5.22 x10exp22 ft3d.6.00 x10exp-15 ft3

(110) 56.5 L + 21.54 L = (111) 2.70 cm + 11.1 cm + 14.52 cm- (112) 5.21 mm × 3.14 mm x 2.1 mm = (113) 412.0 g + 201 L =

1. A student wanted to find the density of an object of unknown composition with a volume of 5.50 0.05 cm³. The mass of the object was 19.255 0.005 g. What is the density of the object, including the absolute uncertainty? a. 3.500 ± 0.3 g cm³ b. 3.500 ± 0.03 g cm? c. 4.259 ± 0,6 g cm¹ d. 4,259 ± 0,06 g cm³

How many (cubic inches) does 15.2 dm' (cubic dm) equal? Careful, check exponent before you choose your answer! Hint: 1 dm = 10cm so therefore 1 dm = (10) cm 1 in=2.54 cm so therefore 1 in = (2.54) cm 3 O 4.19 in 3 9.28 x 10 in 3 O 9.28 x 10 in 3 O 3.87 x 10 3 in 3 O 1.76 x 10 in O 4.19 x 10 in 3 O 3.87 x 10 in O 1.76 x 10 5 in2 O 928 in ? 0419x 102in 3

Record the volume of the liquid in the graduated cylinder to the correct number of significant figures.