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
sveticcg [70]
3 years ago
14

Consider an atom of gold in which the nucleus contains 79 protons and 118 neutrons. What is its atomic number and atomic mass nu

mber?The atomic number is 79, and the atomic mass number is 197.The atomic number is 79, and the atomic mass number is 118.The atomic number is 118, and the atomic mass number is 197.The atomic number is 118, and the atomic mass number is 79.
Biology
1 answer:
OLEGan [10]3 years ago
6 0

Answer:

The atomic number is 79 and the atomic mass is 197.

Explanation:

The atomic number (symbol Z) of a chemical element is the number of protons within its nucleus.

Gold (chemical symbol Au)  is a chemical element with  79 protons in its nucleus, therefore with atomic number 79.

The atomic mass is the  average mass of the atoms of an element (in atomic mass unit). The atomic mass is the weighted average of all the isotopes of a a particular element. For each isotope the atomic mass is approximately the mass of both protons and neutrons since electrons make minor contributions.

The atomic mass of Gold (Au) is 196.9665  but, it can be rounded to 197.

You might be interested in
What phase does not occur between meiosis I and meiosis II, which results in haploid daughter cells?
sattari [20]

Answer:

A. Interphase

Explanation:

Interphase happens to the cell before meosis 1.

7 0
3 years ago
Read 2 more answers
Which of the following correctly describes the relationship between thermal energy and temperature
dusya [7]

Answer:

c or a

Explanation:

wag na ito

6 0
3 years ago
Table Compare the mass of samples B, D, and E to see if temperature affects the rate of weathering. Was there a measureable diff
Slav-nsk [51]

A,B,A

Explanation:

Just took test,

Table

Compare the mass of samples B, D, and E to see if temperature affects the rate of weathering.

Was there a measureable difference among the three treatments?

✔ yes

Which treatment demonstrated the fastest rate of weathering?

✔ warm vinegar

What seems to be the trend demonstrated by the data? As temperature increases, the rate of weathering will

✔ increase

.

5 0
2 years ago
Assuming that other factors are equal, how are the birthrate and death rate
igor_vitrenko [27]

Answer:

In a stable population, if all the other factors are equal then the birth rate should be equal to the death rate in order to maintain the stability.

Explanation:

The birth rate is described as the number of births taking place in an area per year. Death rate is described as the number of deaths taking place in an area in a year.

In order to maintain a stable population, the birth rate should be equal to the death rate. If there are more number of births than the number of deaths, then it would mean more competition for resources like food, water etc.

5 0
3 years ago
Which system takes in food and breaks it down into nutrients?
Sergeu [11.5K]
The Digestive System
8 0
4 years ago
Read 2 more answers
Other questions:
  • Which gastrointestinal hormone stimulates secretion of the components of hydrochloric acid?
    13·1 answer
  • The crossed extension reflex is the contraction of the extensors on one side of the body when the flexors are contracted on the
    12·1 answer
  • Why do some environmental groups oppose tidal energy? (site 1)
    5·1 answer
  • A large explosion that takes place at the end of a star’s life cycle is called a ____________.
    8·2 answers
  • Who discovered the chemical composition of proteins
    12·2 answers
  • Which of the following is a nucleotide found in dna
    7·1 answer
  • Which statement is true about regular exercise ?
    13·1 answer
  • Medications that block the reuptake of serotonin will thereby increase the concentration of serotonin molecules in the select on
    15·1 answer
  • While studying several generations of a particular family, a geneticist observed that a certain disease was found equally in mal
    13·2 answers
  • a culture of e. coli is irradiated with uv light. the highest frequency of mutations would be obtained if after the irradiation,
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!