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
notka56 [123]
3 years ago
12

The atomic number of gold (Au) is 79, and it has a mass number of 197. How many electrons are present in each atom of gold?

Chemistry
1 answer:
aliya0001 [1]3 years ago
8 0
There would be 79 electrons present in each atom of gold. I hope this helps :)
You might be interested in
Energy comes in different forms.
LenKa [72]

Answer:

liquid, solid, and gas

Explanation: It depends where the molecules are moving. When a solid the molecules are vibrating and are all together, compact, the molecules are also very slow. When a liquid the molecules are moving back and forth, up and down, and are less compact, but moving faster. When a gas, the molecules move everywhere very quickly, moving super fast.

3 0
3 years ago
PLEASE HELP ME !!!!!!!!!!!!!!
sergeinik [125]

Answer:

                                                               

Explanation:

                                                                           

3 0
3 years ago
Hydrogen gas reacts with oxygen to form water. 2H2(
denpristay [2]
The reaction is as follows:
2 H₂(g) + O₂(g) → 2 H₂O(g) . ΔH = - 483.5 kJ
Using the change in enthalpy and heat, calculate the moles as follows:
Moles of H₂ = - \frac{amount of heat released}{ΔH} x 2 mol H₂
                  = - 216 kJ / (-483.5 kJ) x 2 mol H₂ 
                  = 0.893 mol H₂
Calculate the mass of H₂ using the moles and molar mass as follows:
0.893 mol H₂ x (2.02 g H₂ / 1 mol H₂) = 1.79 g H₂
Therefore, the mass of hydrogen gas is 1.79 g
7 0
3 years ago
Gamma rays are often used to kill microorganisms in food, in an attempt to make the food safer. Some people contend that this ir
nikdorinn [45]

Answer:

b . Irradiated food is shown to not be radioactive.

Explanation:

If it can be proven that irradiated food is not radioactive, then it will effective dispute the idea that irradiated food are less safe to eat.

  • An irradiated food is one in which ionizing radiations have been employed to improve food quality.
  • Thus, bacteria and other food spoilers can be exterminated from the food.
  • Most irradiated food do not contain radiation and are fit for consumption.

If it can be proven, that this is true, then it will challenge the idea that irradiated foods are not safe.

4 0
2 years ago
8. How many protons are in C-12? C-13? C-14?
NISA [10]
C-12? (6 protons) C-13? (6 protons) C-14? (6 protons)

5 0
3 years ago
Other questions:
  • A teacher wants to perform a classroom demonstration that illustrates both chemical and physical changes. Which would be the bes
    12·2 answers
  • Consider the work of Thomson, Rutherford, and Bohr. In your opinion, which was the most important and why? Be sure to state what
    11·2 answers
  • The acid-dissociation constant at 25.0 °c for hypochlorous acid (hclo) is 3.0 ⋅ 10−8. at equilibrium, the molarity of h3o+ in a
    11·1 answer
  • Do we generally break chemical bonds when we cool molecules?
    9·1 answer
  • Suppose these substance were placed in a freezer set to -50 grades celsius. Which substance would become a liquid. Clorine, Merc
    11·1 answer
  • What is the chemical formula of sodium azide?
    7·1 answer
  • Define velocity and state what it is meant by uniform acceleration
    13·1 answer
  • professional and amateur athletes often tested for the use of illegal performance in Hensing drugs which process is used to sepa
    8·2 answers
  • How metals have been used thorough the ages PLS
    7·1 answer
  • Father, I come to you worn and weary from the hard times I have walked through recently. I come to you seeking your shelter wher
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!