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
ANTONII [103]
2 years ago
6

The period number of any element is equal to the number of its energy levels

Chemistry
1 answer:
gulaghasi [49]2 years ago
7 0

Answer:

The period number refers to the number of electron shells or primary energy levels an atom of each element has. Ex: Period 3 elements—Na, Mg, Al, Si, P, S, Cl, and Ar—have three primary electron energy levels.

true

Explanation:

sorry if wrong pa brainliest nalang :D

You might be interested in
A.<br> Na3PO4 + _HCI - H3PO, + _NaCl<br> What type of reaction and balance the equation
myrzilka [38]

Answer:

Molar Mass

Explanation:

5 0
2 years ago
Read 2 more answers
What is the concentration if 20 grams of NaOH was dissolved in enough water to make a 250 mL NaOH solution?
gizmo_the_mogwai [7]

Answer: 1 molar NaOH contains 40 grams of NaOH per every liter of water

Explanation:

so 2 M NaOH contains twice that amount, ie. 80 grams per liter. Then, ine 250 ml of weater, there should be 80/4 = 20 grams of solid NaOH dissolved.

3 0
3 years ago
If a reaction vessel initially contains 5 mol S and 10 mil O2, how many moles of S will be in the reaction vessel once the react
Alex_Xolod [135]

Answer:

Explanation:

2S       +       3O₂       =       2SO₃

2moles      3 moles

2 moles of S react with 3 moles of O₂

5 moles of S will react with 3 x 5 / 2 moles of O₂

= 7.5 moles of O₂ .

O₂ remaining unreacted = 10 - 7.5 = 2.5 moles .

All the moles of S will exhausted in the reaction and 2.5 moles of oxygen will be left .  

6 0
3 years ago
PLZ HELP GOD PLZ HELP ME PLZ AWNSER 11. AND 14.
JulsSmile [24]
  1. 11, ions
  2. 14, electrolyte

hope this helps

6 0
3 years ago
This graph shows the energy involved in a reaction involving two molecules. Describe what is happening or what the state of the
kondor19780726 [428]
If the graph shows that the energy increases as the reaction proceeds, this means that the state of the reaction of the compounds A, B, C and D is exothermic because the system releases heat to the surroundings, thus, resulting to the increase in energy involved in the reaction. 
4 0
3 years ago
Read 2 more answers
Other questions:
  • What phrase from the Preamble justifies a law like the Affordable Care Act?
    11·1 answer
  • The question is what does it regulate. PLEASE HELP. 1 sentence for each will help
    9·2 answers
  • Complete the equation for the dissociation of Fe(ClO4)3(aq). Omit water from the equations because it is understood to be presen
    14·1 answer
  • How old is Earth according to the geological time scale?
    10·2 answers
  • If a buffer solution is 0.220 M in a weak acid ( Ka=7.4×10−5) and 0.540 M in its conjugate base, what is the pH?
    9·1 answer
  • How many grams of sodium acetate ( molar mass = 83.06 g/mol ) must be added to 1.00 Liter of a 0.200 M acetic acid solution to m
    15·1 answer
  • How many kilojoules of energy would be required to heat a 225g block of aluminum from 23.0 C to 73.5 C?
    5·1 answer
  • Which of the following alkenes is expected to have the highest heat of hydrogenation?
    7·1 answer
  • GIVING BRAINLIEST TO WHOEVER HAS THE BEST ANSWERS! :D
    8·2 answers
  • g in the combustion of 0.398 mol c4h8, how many moles of o2 would be required to completely react with the fuel?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!