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
Svetlanka [38]
3 years ago
15

What does the atomic numbrr represent on the periodic table?​

Chemistry
1 answer:
lesya692 [45]3 years ago
4 0

Answer:

Explanation:

The atomic number tell us the number of protons and neutrons in the nucleus of an atom. in other words ,each element has a unique number that identifies how many protons are in one atom of that element example, all hydrogen atoms, and only hydrogen atoms, contain one proton and have an atomic number of 1.

You might be interested in
An ideal gaseous reaction (which is a hypothetical gaseous reaction that conforms to the laws governing gas behavior) occurs at
lana [24]

Answer:

ΔU = −55.45 kJ

Explanation:

From first law of thermodynamics in chemistry, we have;

ΔU = Q + W

where;

ΔU is change in internal energy

Q is the net heat transfer

W is the net work done

We are given;

Q = 74.6 kJ

But Q will be negative since heat is released

Thus;

ΔU = -74.6 kJ + W

We are given;

Constant pressure; P = 35 atm = 35 × 101325 = 3546375 N/m²

Volume before reaction; Vi = 8.2 L = 0.0082 m³

Volume after reaction; V_f = 2.8 L = 0.0028 m³

Now,

W = -P(V_f - V_i)

W = - 3546375(0.0028 - 0.0082)

W = 19.15 KJ

Thus;

ΔU = Q + W

ΔU = -74.6 kJ + 19.15 KJ =

ΔU = −55.45 kJ

6 0
3 years ago
Which is larger? C atom or F atom? Explain why.
tekilochka [14]

Answer:

Carbon or Fleuronie?

Explanation:

3 0
3 years ago
Can Someone help me please…
erma4kov [3.2K]

Answer:

1.Ecologists often estimate the size and density of. populations using quadrats and the mark-recapture method.

2. The two key components of ecosystem stability are resilience and resistance.

3.The availability of abiotic factors (such as water, oxygen, and space) and biotic factors (such as food) affect population

4. When the climate is changing in the colder direction it effects the planet in the opposite way than it does when it is changing in the warmer direction. Ad nauseam the contemporary, it’ll keep getting hotter and at a greater rate so the ecosystem is going to die.

7 0
2 years ago
Having been heated to 800 K , at some point the tank starts to leak. By the time the leak is repaired, the tank contains only ha
Liula [17]

Answer: The temperature of the gas reduced to 400K.

Explanation:

Stated that ; The pressure remains the same, that is initial and final pressure equals 1atm.

Applying Charles Law

V1/T1 = V2/T2

Initial volume V1 = 1

Final volume V2 = 1/2 (halved)

Initial temperature T1 =800K

Final temperature T2 = ?

(1/800) = (1/2)/T2

T2 = 800/2

T= 400K

Therefore, when the volume is halved, the temperature reduced also to half ( 400K)

3 0
3 years ago
Calculate the molar mass of Al(CH3O2)3
lina2011 [118]

Answer:

The molar mass and molecular weight of Al(CH3CO2)3 is 204.1136.

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the relationship between where the element is located within a "block" in the Periodic table and the superscripted value
    12·2 answers
  • If I have 24.25 grams of nitrogen, how many moles is that?
    13·1 answer
  • What are the components of a nucleotide?
    13·1 answer
  • PLEASE HELP<br> two ways chemistry affects you in your daily life?
    6·1 answer
  • If 45 grams of solid aluminum and 301 grams of ammonium perchlorate are reacted. How much excess reactant is left over? Show you
    9·1 answer
  • What would the chemical formula be of a compound that has Hydrogen and Carbon in it?
    5·2 answers
  • Earth has a low air pressure zone at the equator because what
    11·1 answer
  • Why do you think the astronomical unit is not used to measure distances on earth?
    11·2 answers
  • What two methods are used for determining the age of rocks and fossils?
    9·1 answer
  • Which list only includes terms that describe water?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!