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
o-na [289]
3 years ago
10

How many atoms of gold are in gold nugget with a mass of 4.25 g

Chemistry
2 answers:
Norma-Jean [14]3 years ago
7 0

Answer:

1.299 * 10^22

Explanation:

Feliz [49]3 years ago
3 0
Number of Atoms in Gold for given mass can be calculated using following formula,

              # of Moles  =  Number of Atoms / 6.022 × 10²³
Or,
             Number of Atoms  =  Moles × 6.022 × 10²³     ------- (1)    

Calculating Moles,
As,
                              Moles  =  Mass / M.mass
So,
                              Moles  =  4.25 g / 196.96 g/mol

                              Moles  =  0.0215

Putting value of mole in eq.1,

             Number of Atoms  =  0.0215 × 6.022 × 10²³

             Number of Atoms  =  1.299 × 10²²

Result:
            4.25 g 
of Gold Nugget contains 1.299 × 10²² Atoms.
You might be interested in
How to calculate from moles to grams?<br> 4.0 moles of Cu(CN)2
andreyandreev [35.5K]

Answer: The mass of given amount of copper (II) cyanide is 462.4 g

Explanation:

To calculate the number of moles, we use the equation:

We are given:

Moles of copper (II) cyanide = 4 moles

Molar mass of copper (II) cyanide = 115.6 g/mol

Putting values in above equation, we get:

Hence, the mass of given amount of copper (II) cyanide is 462.4 g

3 0
2 years ago
Percent yield ? how do i do this
Naddik [55]

Answer:Is this from the stochiometry unit?

Explanation:

4 0
2 years ago
The difference in temperature of the two glasses of water is 30°C. What is their difference in temperature on the Kelvin scale?
Nutka1998 [239]

Answer:

D

Explanation:

Because 30c is kevin and add 303+30=333-30=303

3 0
2 years ago
What is the mass of an object if its density is 12.3 g/ml and it has a volume of 25 ml?
Virty [35]

density \:  =  \frac{mass}{volume}

mass = 12.3 × 25

= 307.5

approximately = 308 g

3 0
2 years ago
How many grams would 8.88 x 1029 atoms of NaCl be equivalent to?
olasank [31]

Answer:

8.65x10 7 grams of nacl

Explanation:

There are 6.02x10 23 atoms per one mol

so

8.88x 10 29 x (1/6.02 x 10 23)

Will give us mols of NaCl

to go from mols to grams we multiple mols by molar mass

so

1.48x10 6 mols of Nacl x 58.44 g/mol = 8.65x10 7 grams of nacl which can be converted to

86500 kg

5 0
2 years ago
Other questions:
  • A reaction mixture initially contains 0.140 MCO and 0.140 MH2O. What will be the equilibrium concentration of CO?
    10·2 answers
  • Which of these factors makes nuclear energy unsustainable?
    7·2 answers
  • Lee conducts an experiment to see if mass is conserved when a piece of charcoal is burned for 5.0 minutes. He measures the mass
    12·1 answer
  • What mass of silver oxide, Ag2O is required to produce 25.0 g of silver sulfadiazine, AgC10H9N4SO2, from the reaction of silver
    15·1 answer
  • How can you tell if a chemical reaction has occurred?
    8·1 answer
  • Your job is to determine the concentration of ammonia in a commercial window cleaner. In the titration of a 25.0 mL sample of th
    11·1 answer
  • Solution X is a strong base with a pH of 12. Solution X is mixed with solution Y,and the pH of the resulting mixture is 8.Based
    10·1 answer
  • Jacob's teacher shows his class a shaker filled with table salt. Jacob thinks that the salt in the shaker looks like a s
    14·1 answer
  • 5. What is metallic bonding?<br> 6. Why are metals shiny?
    14·1 answer
  • A gas starts at a volume of 23 L and a pressure of 1.23 atm. What is the new pressure if you
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!