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
galina1969 [7]
3 years ago
12

Gold atoms can be identified based on the number of which subatomic particles?

Chemistry
2 answers:
sp2606 [1]3 years ago
7 0

Answer: A

Explanation:

A Gold (Au) atom has 79 protons and 79 electrons. A typical gold atom has 118 neutrons, though there are 18 other radioisotopes discovered so far. 79 is its charge (atomic number), which is both its proton number and electron number

dalvyx [7]3 years ago
6 0
D. Protons, if you change the number of protons you change the element. You cannot change nuclei. You can have the same element with different numbers of neutrons (isotopes) and different numbers of electrons (ions). So protons will allow you to identify the element.
You might be interested in
Can one mole of peas fit inside your house? List the materials and steps of an experiment that answers the
svlad2 [7]

Answer:

No.

Explanation:

No, one mole of peas do not fit inside a house because one mole is equals to 6.022 × 10²³ units which is a very large value. mole only use for atoms, ions and molecules etc due to very small size but mole is not used for big sized materials such as peas and other vegetables etc. So that's why we can conclude that one mole of peas did not fit inside a house.

6 0
2 years ago
Determine how many oxygeng atoms are in 5.00 g of sample of sodium dichromate, na2cr2o7
vlada-n [284]

The number of oxygen atoms is in 5.00 g of sample of sodium dichromate, Na₂Cr₂O₇ is 1.125 x 10²³ atoms.

<h3>What is sodium dichromate?</h3>

Sodium dichromate is an inorganic compound. It is sued in tanning and mental illness.

The molar mass of sodium = 23 gm

The molar mass of Cr = 51.99 gm

The molar mass of oxygen = 16 gm

Molar mass of Na₂Cr₂O₇ = 2(23) + 2(51.99) + 7(16) = 261.98 gm

Number of moles in 7 gm = mass / molar mass = 7 / 261.98 = 0.0267 moles

1 mole of  Na₂Cr₂O₇ contains 7 moles of oxygen, therefore:

The number of moles of oxygen in 0.0267 moles = 0.0267 x 7 = 0.1869 moles

Thus, the number of atoms = 0.1869 x 6.02 x 10^23 = 1.125 x 10²³ atoms.

To learn more about sodium dichromate, refer to the link:

brainly.com/question/1444529

#SPJ4

6 0
2 years ago
What is an energy source produced from nuclear reactions
valkas [14]

Answer:

I believe it would be electricity.

Explanation:

6 0
3 years ago
HELP!!!!! NO SPAM!!!!!!!!!!!!!!!!!
Lisa [10]

Answer:

Explanation: S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O In the above equation how many moles of water can be made when 115.3 grams of HNO3 are consumed? Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0 Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.: Element Molar Mass Hydrogen 1 Nitrogen 14 Sulfur 32 Oxygen 16...

Hope it helps..!!

4 0
2 years ago
Read 2 more answers
“The maximum amount of energy that can be used to do work.” This statement describes which measure?
Elza [17]
Free energy is the amount of energy that can do work.

Free energy is the internal energy of a system less the amount of energy that cannot perform work. 
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which is TRUE of the reactants in this displacement reaction? Fe + 2HCI --&gt; FeCI2 + H2
    10·2 answers
  • Explain Boyle's &amp; Charles's law.
    12·1 answer
  • Saccharin, a sugar substitute, is a weak acid with pka=2.32 at 25 ∘c. it ionizes in aqueous solution as follows: hnc7h4so3(aq)←−
    6·1 answer
  • 1. The density of solid Cu is 8.96g/cm3 . How many atoms are present per cubic centimeter(cm3) of Cu ?
    12·1 answer
  • Which of the following has the greatest force between particles? Why?
    6·2 answers
  • Most of the properties of water are due to its:
    12·2 answers
  • Write the net ionic reaction for the following double replacement reaction:
    10·1 answer
  • Describe how the pH of a solution can be calculated
    11·1 answer
  • The diagram shows steps and structures involved in protein production
    11·2 answers
  • Consider the reaction . At equilibrium, a 10 L vessel contains 1.5 moles of HI, 0.1 moles of I2 and 0.3 moles of H2. Which direc
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!