1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
saveliy_v [14]
3 years ago
13

The radius of an atom of gold (Au) is about 1.35 Å. How many gold atoms would have to be lined up to span 5.0 mm ?

Chemistry
2 answers:
azamat3 years ago
6 0

1.851.10⁷ gold atoms would have to be lined up to span 5.0 mm

<h3>Further explanation</h3>

There are 7 main quantities that have been determined based on international standards, namely:  

  • 1. Length, meters (m)
  • 2. Time, second (s)
  • 3. Mass, kilograms (kg)
  • 4. Temperature, kelvin (K)
  • 5. Light intensity, candela (cd)
  • 6. Electric current, ampere (A)
  • 7. Amount of substance, mol (m)

The length indicate the distance between two points in a place  

The symbol is usually expressed in l, length  

Length measurement can be used by several measuring instruments such as ruler, caliper length, meter, screw micrometer  

The main length unit consists of 7 units :

  • Kilometer, km
  • Hectometer, hm
  • Dekameter, dam
  • Meter, m
  • Decimeter, dm
  • centimeter, cm
  • millimeters, mm

Each one unit descends then multiplied by 10, and if one unit increases then divided by 10  

For 1 Â (angstrom) equal to 10⁻⁷ mm

The radius of an atom of gold (Au) is about 1.35 Å

so the diameter = 1.35 x 2 = 2.7 Å = 2.7.10⁻⁷ mm

to be lined up to span 5.0 mm requires gold atoms :

amount of gold atom : 5.0 : 2.7.10⁻⁷ mm = 1.851.10⁷

<h3>Learn more </h3>

book thickness in cm

brainly.com/question/8540796

The mass of A standard baseball

brainly.com/question/4576804

the quantity of 0.0075 meters expressed in centimeters

brainly.com/question/2867118

Keywords: gold atom, diameter, millimeters, angstrom(Å)

ivolga24 [154]3 years ago
4 0
r=1,35 \AA\\&#10;d=2,7 \AA=2,7*10^{-10}m\\\\&#10;5mm=0,005m=5*10^{-3}m\\\\&#10;&#10;Au_{atoms}=\frac{5*10^{-3}m}{2,7*10^{-10}m}=1,852*10^{-3-(-10)}m=1,852*10^{7}m&#10;
You might be interested in
About 68% of the electrical energy in the united states is produced by nuclear fuel
Dvinal [7]

Answer:

WWHHAATT

Explanation:

7 0
3 years ago
Identify the correct statements associated with titration.
Montano1993 [528]

Answer:

a

Explanation:

because titration by definition, is used to determine the concentration of one reactant in an aqueous solution, it requires a burette to accurately measure the volume of a solution and endpoints in acid-base titration can be determined by a colour indicator or a pH meter

3 0
3 years ago
PLEASE HELP!!!! 24 POINTS
Leno4ka [110]
A petroleum-based lubricant used to in farming machinery.
hope i helped very well
4 0
3 years ago
Read 2 more answers
what is the percent by mass concentration of a solution that contains 5.30 grams of salt dissolved in 19.7 g of water​
neonofarm [45]

Answer:

0.212

Explanation:

(5.30g) / (5.30g + 19.7g)

4 0
3 years ago
What was the open-range system ​
Nesterboy [21]

Answer: In the Western United States and Canada, open range is rangeland where cattle roam freely regardless of land ownership. ... Land in open range that is designated as part of a "herd district" reverses liabilities, requiring an animal's owner to fence it in or otherwise keep it on the person's own property.

Explanation: Mark me as brainliest

5 0
3 years ago
Other questions:
  • If the activation energy for a given compound is found to be 42.0 kJ/mol, with a frequency factor of 8.0 × 1010 s-1, what is the
    15·1 answer
  • What systems are responsible for moving the gases oxygen and carbon dioxide?
    14·1 answer
  • When the [H+] in a solution is 1.7 × 10−9 M, what is the pOH ?
    6·2 answers
  • The following characteristics describe which of these terms? the substance is not uniform in appearance and each part of the mix
    5·2 answers
  • What is the mass of the helium nucleus?
    12·1 answer
  • Select the correct answer. Which statement best explains the octet rule? A. Atoms gain, lose, or share electrons to achieve a fu
    8·2 answers
  • I’ve been stuck on these 5 questions!? Can you guys help?!
    8·1 answer
  • Can you light a diamond on fire
    6·1 answer
  • Could you help answer these two question
    15·1 answer
  • 5. What is the overall charge of the electron cloud of the atom?Explain
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!