Measurements report lab

121 (OL) Lab 3 Den... V Layout Search References Mailings Review View Help 1 2 3 5 6 I i Lynette Maina Commer 7 LE T Chem 121(OL) Lab 3: Density of Common Materials Part C Thickness of Aluminum Foil (For help understanding the calculations read the introduction and procedure) An experiment performed for Part C to measure the length, width and mass of a piece of aluminum foil gave the following data. You will use this data to solve for the thickness of aluminum foil using the equation from Part C in the introduction. Length of foil Width of foil Mass of foil 13.10 cm 9.50 cm 9.745 g Use the data in the table to determine the thickness of your aluminum foil (in cm) using the 2.6989 g/mL for the density of aluminum then convert this value to meters (m) and micrometers (um). Show your work here (use back if necessary). ons: On Accessibility: Investigate F3 F4 W cm K F5 ►11 F6 K H m um DELL F7 F8 Gu F9 Focus BB 5= 57°F Mostly sunny 4/1 F10 F11 F12 PrtScr "T

A sample of calcium chloride, CaCl2, has a mass of 27.8 g. What mass of chlorine is present in the sample?  A. 6.4 grams B. 15.85 grams C. 17.79 grams D. 10.98 grams

Percent error of the recorded data. Theoretical mass of Nickel- 5.000g

22. The density of magnesium is 1.74 g/cm. What is the mass of a magnesium block that measures 2.5 cm X 3.5 cm X 1.5 cm? a) 48 g b) 23 g c) 12 g d) 7.5 g

The following shows the mass ratio of Ca and Cl2 and the mass of CaCl2 formed in various experiments. Experimenty Mass Mass The mass of No. Са C12 CaCl2 formed (gr) (gr) (gr) 1 11 2 8 14 22 3 4 11 4 12 25 33 Based on the data above, the comparison of Ca and Cl in CaCI2 is. A. 4 :7 B. 5:7 C. 6 :7 D. 5:9 IS. 6: 11

The atomic weight of silicon is 28.0855. Round this to 4 significant figures. O a. 28.09 b. 28.1 Oc. 28.0 O d. 28.08

Fill in the blank. Gravimetric analysis relies heavily on the principle of______ a. Conservation of energy b. Conservation of mass c. Constant composition d. Definite proportions

- 23 An iron atom has a mass of 9.27 × 10 g and a cooking pot has a mass of 0.500 kg. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of iron atoms? Round your answer to 3 significant digits. ? How many moles of iron atoms have a mass equal to the mass of a cooking pot? Round your answer to 3 significant digits.

24R) The density of silver is 10.5 g/cm3. A piece of silver with a mass of 61.3 g would occupy a volume of cm3. A) 0.171 B) 644 C) 10.5 D) 0.00155 E) 5.84

if the density of an element 1.5 g/ml with volume 1.8 L, its mass will be ... g. 2700 O 2.7 1200 1.2 Non of the above

22. lag a. is a statement about a regularity in nature law b. theory c. hypothesis Both a and c d. 26. In the scientific method, which should be the first step among the choices? a. hypothesis c. observation. b. d. development of theory experimentation

Osmium, one of the heaviest elements with a density of 22.5g/cm3. What is the mass of 15.0 cm3 of the metal? A) 0.667g B) 337.5 g C) 22.5g D) 156.4g E) 444 g

In 3C02 (carbon dioxide gas) + 4H2 O (water), the ratio of carbon dioxide to water is tly sunny 4:3 3:4 O 1:1 O 2:1 F2 -0- @ F3 -0+ # F4 CO $ F5 % 5 F6 * F7 6 4- F8 & 7 F9 ★ 8 F10 28 9 F11 ( F12 0 A Prt Sc

A computer flashdrive has a mass of 3.45 g. What is the mass of the flashdrive in decigrams (dg)? A) 0.345 dg B) 34.5 dg C) 345 dg D) 3,450 dg

Question 4. Dylan reacted a sample of silver chloride, A9CI, to recover pure silver. He recorded the following data. Mass of empty beaker = 29.10 g Mass of beaker with AgCl = 39.74 g Mass of silver recovered = 8.00 g Data %3D Assuming that all the silver was recovered in the process, what mass of chlorine would have been combined with 1.00 g of silver? А. 0.33 g В. 1.33 g С. 2.64 g D. 3.97 g

A copper atom has a mass of 1.06 x 10 g and a penny has a mass of 2.5 g. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of copper atoms? Round your answer to 3 significant digits. ? How many moles of copper atoms have a mass equal to the mass of a penny Round your answer to 2 significant digits.

Write each quantity in scientifi c notation. a. 0.001 25 mc. 54,235.6 me. 4,440 s b. 8,100,000,000 lbd. 0.000 001 899 L