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
Serhud [2]
3 years ago
9

A sample of gold (AU) has a mass of 57.01 g.

Biology
2 answers:
san4es73 [151]3 years ago
8 0

Answer:

Number of moles is 0.2894 moles Au

Given:

Mass of gold= 57.01 g  

To find:

Number of moles

Formula:

<h2>Number of moles= Given mass/Molar mass of gold </h2>

Molar mass of gold= 196.97 g/mol.

By substituting we get(57.01 g Au) / (196.97 g/moles) = 0.2894 moles Au  

Hence we get number of moles=0.2894 moles Au

<u>Note: </u>Molar mass= Mass of the sample of a compound/Total amount of that substance in that sample. Molar masses of different substances are the standard value which are specifically arranged to each compound

Kamila [148]3 years ago
6 0

A). Calculation: Given mass of Au * 1mol of Au/molar mass of Au= # of moles ;

57.01 g Au*1 mole of Au/196.97g Au=0.3 moles of Au.  So the answer is 0.3 moles of gold(Au). Good luck on the rest,  and message me on Brainly if you need more help. I'll be happy to.


You might be interested in
Some help quick
zysi [14]

Answer:

cells

Explanation:

cells are responsible for the structures and functions

5 0
3 years ago
Which nitrogen base replaces thymine (T) in RNA? cytosine(C) uracil (U) guanine (G) adenine (A)
fomenos
(c) it's uracil 

hope this hepls
5 0
4 years ago
Read 2 more answers
Question 3 (multiple choice) A group of individuals that breed with another and are part of the same species make up a _________
Brrunno [24]
The answer would be a population
3 0
4 years ago
Which atom is a carbon atom?<br><br> ( 20 points ) ❤️
julsineya [31]
The answer is B. Hope this helps :)
3 0
3 years ago
Read 2 more answers
Could someone make me a presentation of this? and attach it as a pdf
Nonamiya [84]
I don’t know the answer I just need some points sorry
4 0
3 years ago
Other questions:
  • He complete set of genetic material of an individual is known as his or her ____.​
    13·1 answer
  • Motion is not the only indicator of the passage of time in art. ________ use the changing properties of organic material to crea
    14·1 answer
  • Situational context is the social and environmental setting in which a particular behavior takes place. true or false
    7·2 answers
  • 1. In rabbits, white fur color (W) is dominant to black, and long ears (L) are dominant to
    6·1 answer
  • Explain how reflex action takes place ​
    9·1 answer
  • L
    11·1 answer
  • What are three things that can denature an enzyme?
    9·1 answer
  • New traits and variations in a population occur by
    10·1 answer
  • Which of the following statements correctly describes the genetic material inside a virus?
    6·1 answer
  • What will happen to the other members of the food chain if the grasshoppers are removed?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!