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
Verdich [7]
3 years ago
6

Consider the gold isotope 197Au. How many electrons, protons, and neutrons are in a neutral 197Au atom?

Chemistry
1 answer:
tangare [24]3 years ago
6 0

Answer:

The 197Au isotope has 79 protons, 79 electrons and 118 neutrons

Explanation:

Step 1: The isotope = 197Au

Step 2: Calculate neutrons, electrons and protons

197 = Number of protons + number of neutrons

Isotopes always have the same proton number ( is the same as the atomic number). For Gold (Au) is this 79.

The number of electrons is equal to the number of protons in a neutral atom. Since we have 79 protons, there are also 79 electrons.

All isotopes of Au have a different number of neutrons.

The number of neutrons = 197 -79 = 118 neutrons

The 197Au isotope has 79 protons, 79 electrons and 118 neutrons

You might be interested in
What is the mass of an object that has a density of 2.3 g/mL And a volume of 343ML
Bogdan [553]

Answer:

788.9g

Explanation:

density=m/v

2.3g/ml=m/343ml

=343×2.3

=788.9g

7 0
3 years ago
I need help on this one pliz
Artyom0805 [142]
The answer would be 16.04.
8 0
4 years ago
Choose the solvent below that would show the greatest freezing point lowering when used to make a 0.20 m nonelectrolyte solution
tatiyna

Answer : Carbon tetrachloride, k_f=29.9^oC/m will show the greatest freezing point lowering.

Explanation :

For non-electrolyte solution, the formula used for lowering in freezing point is,

\Delta T_f=k_f\times m

where,

\Delta T_f = lowering in freezing point

k_f = molal depression constant

m = molality

As per question, the molality is same for all the non-electrolyte solution. So, the lowering in freezing point is depend on the k_f only.

That means the higher the value of k_f, the higher will be the freezing point lowering.

From the given non-electrolyte solutions, the value of k_f of carbon tetrachloride is higher than the other solutions.

Therefore, Carbon tetrachloride, k_f=29.9^oC/m will show the greatest freezing point lowering.

4 0
3 years ago
Finding energy and wavelength?
deff fn [24]
The equation is
W = C/F
W= 3.00 x 10^8 m/sec
——————————
6.165 x 10^14 Hz
W= 4.87 x 10^-7 m

Energy is
E=hF
E= (6.626 x 10^-34 Jxsec )(6.165 x 10^14 Hz)
E= 4.085 x 10^-19 J




3 0
3 years ago
What causes hydrogen bonding? A.attraction between ions, B.motion of electrons, C.bonding of a covalently bonded hydrogen atom w
liberstina [14]
The answer for this question is B
8 0
3 years ago
Other questions:
  • BRAINLIESTT ASAP! PLEASE HELP :)
    9·1 answer
  • Determine the enthalpy for this reaction: Al(OH)3(s)+3HCl(g)→AlCl3(s)+3H2O(l)
    5·1 answer
  • What change in volume results if 60 mL of a gas is cooled from 33 C to 5 C?
    14·1 answer
  • draw the lewis structure for CO2, H2CO3, HCO3-, and CO3 2-.Rank these in order of increasing attraction to water molecules. Expl
    14·1 answer
  • 3Fe + 4H2O Fe3O4 + 4H2
    7·2 answers
  • What type of radiation is emitted when chromium-51 decays into manganese-51? Show the nuclear equation that leads you to this an
    7·2 answers
  • Why is water considered "sticky"? What does that mean?
    5·2 answers
  • Express 450 x 10-9 m (wavelength of blue light) in decimal notation (i.e., express
    15·1 answer
  • Robert uses a spring scale to measure force. What are the units of his measurements? A. Pascals B. Volts C. Joules or D. Newtons
    10·1 answer
  • Why should we try to use less oil, natural gas and electricity?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!