A proton has a radius of approximately 1.0×10-13 cm and a mass of 1.7x10-24 g. Part A Determine the density of a proton. For a sphere V = (3) π³. Express the density to two significant figures. P = ΜΕ ΑΣΦ Submit Request Answer Provide Feedback 0 ? g cm³

Molecular distances are usually given in nanometers (1 nm = 1 109 m) or in picometers (1 pm = 1 1012 m). However, the angstrom () unit is sometimes used, where 1 = 1 1010 m. (The angstrom unit is not an SI unit.) If the distances between the Pt atom and the N atom in the cancer chemotherapy drug cisplatin is 1.97 , What is this distances in nanometers? In picometers?

Hexane (C6H14, density = 0.766 g/cm3), perfluoro-hexane (C6F14, density = 1.669 g/cm3), and water are immiscible liquids; that is, they do not dissolve in one another. You place 10 mL of each in a graduated cylinder, along with pieces of high-density polyethylene (HDPE, density = 0.97 g/cm3), polyvinyl chloride(PVC, density = 1.36 g/cm3), and Teflon (density = 2.3 g/cm3). None of these common plastics dissolves in these liquids. Describe what you expect to see.

The density of a solution of sulfuric acid is 1.285 g/cm3, and it is 38.08% acid by mass. Calculate the volume of the acid solution (in mL) you need to supply 125 g of sulfuric acid.

Gold leaf, which is used for many decorative purposes, is made by hammering pure gold into very thin sheets. Assuming that a sheet of gold leaf is 1.27 105 cm thick, how many square feet of gold leaf could be obtained from 28.35 g gold? The density of gold is 19.3 g/cm3.

1-89 Consider butter, density 0.860 g/mL, and sand, density 2.28 g/mL. (a) If 1.00 mL of butter is thoroughly mixed with 1.00 mL of sand, what is the density of the mixture? (b) What would be the density of the mixture if 1.00 g of the same butter were mixed with 1.00 g of the same sand?

Gold can be hammered into extremely thin sheets called gold leaf. A 200-mg piece of gold (density = 19.32 g/cm3) is hammered into a sheet measuring 2.4 ft x 1.0 ft. %3D What is the average thickness of the sheet in meters? Hints: Calculate the volume of the sheet from its density and mass, and then use the volume relationship for a rectangular solid, V = length x width x thickness.

The density of raw milk depends on its composition and temperature, but (although literature data varies slightly) is usually around ρmilk=1.0296 g/cm3. Express density of milk in unusual units of pounds per cube inch with a precision of three places after the decimal. Assume 1 kg = 2.2 lb and 1 in = 0.0254 m.

11 of 1 Review | Constants | Periodic Ta Part B [(285.0 x 10°) – (1.300 × 10’)] × 2.8988 Express your answer to the appropriate number of significant digits. Ενα ΑΣφ [(285.0 x 10°) – (1.300 × 10')] × 2.8988 = Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Your response should have more than three significant figures since both values involved in the product will have greater than three significant figures When you take the difference between 285.0 x 10° and 1.300 x 103 the last significant digit is determined by the value that is significant to the least number of decimal places, which is 285.0 x 105 Part C 1:37 62°F 1/14/ acer

An electric current of 481.0 mA transports 530. uC of charge. Calculate the time this took. Be sure your answer has the correct unit symbol and 3 significant digits. 0 x10 X H 8 S