Algebra

The density of aluminum is 2.70 g/cm3, and the average mass for one aluminum atom is 4.48×10-23 g.
Five identical aluminum coins are found to displace a total of 2.50 mL of water when immersed in a graduated cylinder containing water.
How many atoms are present in one such aluminum coin?

  1. 👍 0
  2. 👎 0
  3. 👁 34
asked by Anonymous
  1. each coin is 0.50mL

    .50mL * 2.70g/mL / 4.48*10^-23g/atom = 3.01*10^22 atoms

    1. 👍 0
    2. 👎 0
    posted by Steve

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    An aluminum wire of diameter 2.47 mm carries a current of 12.9 A. How long on average does it take an electron to move 10.5 m along the wire? Assume 3.50 conduction electrons per aluminum atom. The mass density of aluminum is 2.70

    asked by jason on February 10, 2012
  2. chemistry

    an aluminum cylinder is 10.0 cm in length and has a radius of .25 cm. if the mass of a single atom of aluminum is 4.48X10^-23 calculate the number of aluminum atoms present in the cylinder. the density of aluminum is 2.70 g/cm^3

    asked by Krista on September 7, 2012
  3. Physics ( Thickness of a Spherical Shell)

    Aluminum floater: A spherical shell with an outer radius R=2 cm is made of aluminum (mass density of Al is 2.7 g/cm3). How thick is the shell if the average density of the spherical object is exactly 0.5 g/cm3 ? Assume there is a

    asked by JC on September 9, 2015
  4. AP Chemistry

    We were given a 12 cm by 12 cm area of aluminum foil (it weighed 0.60 g) and were told to calculate the atomic mass of Aluminum atoms given that the radius of 1 aluminum atom is 143 picometers and the density is 2.7 grams per

    asked by BadatChem on November 15, 2012
  5. CHEM PLZ URGENT!!

    19. A block of aluminum has a volume of 126.5 cm3. Its density = 2.70 g/cm3. What is the mass of the aluminum? A) 342 g B) 46.9 g C) 127 g D) 0.0213 g E) 124 g The answer is A.....But I still can't figure it out....I keep getting

    asked by Ania on February 22, 2008
  6. Chemistry

    What is the mass of a cube of aluminum that is 4.0 cm on each edge? The density of aluminum is 2.7 g/cm3.

    asked by Ciaria on March 2, 2015
  7. Chemistry

    A homogenous mixture of metals is called an alloy. An alloy is found to be 30% by volume gold with the rest being aluminum. Aluminum has a density of 2.70 g/cm³. Gold has a density of 13.1 g/cm³. If a piece of alloy contains

    asked by Mom on October 9, 2011
  8. conversion problems

    Im not sure how to convert these because of the cm cubed heres the question: An aluminum engine block has a volume of 4.88 L and a mass of 12.60 kg. What is the density of the aluminum in grams per cubic centimeter? so its gonna

    asked by Hannah on August 25, 2010
  9. physics

    To determine the density of block of aluminum, you measured the mass at 101.1 g and a volume of 38.2 cm3 . When you looked up the value for aluminum density you found out it should be 2700 kg/m3 What is the percent error for your

    asked by Anonymous on January 20, 2011
  10. chemistry

    The density of aluminum is 2.70g/cm3 and the density of chromium is 7.19g/cm3. If eual masses of aluminum and chromium are transferred to equal volumes of water in separate cylinders, which cylinder would have the greates volume

    asked by Anonymous on September 7, 2009

More Similar Questions