2. The approximate radius of a nucleus, r, is given by the formula r = A$(1.3x10-13cm), where A is the mass number of the nucleus. What is the radius of the Al nucleus in decimeter. The atomic radius of the Al is approximately 143 pm. If the diameter of this atom were 1.00 km what would be the diameter of its nucleus (in ft)? Calculate also the percentage of the total volume of the aluminum atom that is occupied by the nucleus. A) 3.9x1014, 0.088, 3.0x10-6 B) 3.9x1014, 0.088, 2.0x10-8 C) 3.9x1014, 0.068, 2.0x10-6 D) 3.9x1014, 0.088, 2.0x10-6 E) none of the above

2. The approximate radius of a nucleus, r, is given by the formula r = A$(1.3x10-13cm), where A is the mass number of the nucleus. What is the radius of the Al nucleus in decimeter. The atomic radius of the Al is approximately 143 pm. If the diameter of this atom were 1.00 km what would be the diameter of its nucleus (in ft)? Calculate also the percentage of the total volume of the aluminum atom that is occupied by the nucleus. A) 3.9x1014, 0.088, 3.0x10-6 B) 3.9x1014, 0.088, 2.0x10-8 C) 3.9x1014, 0.068, 2.0x10-6 D) 3.9x1014, 0.088, 2.0x10-6 E) none of the above

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 113CP: On October 21, 1982, the Bureau of the Mint changed the composition of pennies (see Exercise 120)....

See similar textbooks

Similar questions

3.37 If atypical grain of sand occupies a volume of 1.3 × 10-4 cm3, what is the volume (in cm3) of 1 mole of sand (ignoring the space between grains)? What is the volume in liters?
Calculate the average density of a single Al-27 atom by assuming that it is a sphere with a radius of 0.143 nm. The masses of a proton, electron, and neutron are 1.67261024g,9.10941028g, and 1.67491024g, respectively. The volume of a sphere is 4r3/3, where r is its radius. Express the answer in grams per cubic centimeter. The density of aluminum is found experimentally to be 2.70 g/cm3. What does that suggest about the packing of aluminum atoms in the metal?
A 2.0-mer volume of hydrogen gas combined with 1.0 liter of oxygen gas to produce 2.0 liters of water vapor. Does oxygen undergo a chemical or physical change?
On October 21, 1982, the Bureau of the Mint changed the composition of pennies (see Exercise 120). Instead of an alloy of 95% Cu and 5% Zn by mass, a core of 99.2% Zn and 0.8% Cu with a thin shell of copper was adopted. The overall composition of the new penny was 97.6% Zn and 2.4% Cu by mass. Does this account for the difference in mass among die pennies in Exercise 120? Assume the volume of the individual metals that make up each penny can be added together to give the overall volume of the penny, and assume each penny is the same size. (Density of Cu = 8.96 g/cm3; density of Zn = 7.14 g/cm3).
The element stramonium (Sa, average atomic mass 628.23 u) reacts with the element kingsine (Ks, average atomic mass 314.32 u) to form stramonium kingside, Saksy. What is the mass of one molecule of Saks, in u, to ±0.01 u? Type in the number without units.
The speed limit on road in Mexico is 90 km/hr. What is this speed equivalent to on moles per hour, if 1.00 = 0.621 mile?
The radius of a barium atom is 217 pm. How many barium atoms would have to be laid side by side to span a distance of 2.16 mm? atoms
A major component of gasoline is octane C8H18. When octane is burned in air, it chemically reacts with oxygen gas O2 to produce carbon dioxide CO2 and water H2O. What mass of water is produced by the reaction of 5.48g of oxygen gas? Round to 3 significant digits.
The average dollar bill is 1.8x107 nm long and weighs 0.987 g. The distance to the sun is 1.5x108 km. How many moles of dollar bills would be needed to span the distance to the sun?
Earth’s surface area is 5.1 x 108 km2, its crust has an average thickness of 35 km and an average density of 2.8 g/cm3. The two rarest (non-radioactive) elements in the crust are ruthenium and rhodium, each with an abundance of 1.0 x 10-4g/metric ton crust. What is the total mass of these two elements in the earth’s crust? (1g = 1 x 10-6 metric ton)
6.Express your answers to at least 5 significant figures. The mass of one mole of boron is 10.811 g. (a) What is the mass in u of one boron atom? answer was 10.81 (b) What is the mass in kg of one boron atom? ___x10^_____
1892889099 BN=9781305657571&snapshotld%32199... Lo DTAP Q Search this cour Use the References to access important values if needed for this question. Automobiles are often implicated as contributors to global warming because they are a source of the greenhouse gas CO2. How many pounds of CO, would your car release in a year if it was driven 100. miles per week? Gasoline is a complex mixture of hydrocarbons. In your calculations, assume that gasoline is isooctane (molecular formula C3H18) and that it is burned completely to CO2 and H,O in the engine of your car. Also assume that the car averages 25.6 miles per gallon and that the density of isooctane is 0.692 g cm Pounds of CO2 released = lbs Submit Answer 5 question attempts remaining