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
PSYCHO15rus [73]
3 years ago
10

What happens to the number of valence electrons as you move from element 1 to element 18 on the periodic table?

Chemistry
2 answers:
BARSIC [14]3 years ago
6 0

Answer:

B

Explanation:

the group number is=valence electrons. element 1 is in group 1 element 18 is in group 8. 1<8

zysi [14]3 years ago
3 0

Answer:

the answer is b

Explanation:

i just know

You might be interested in
For the reaction 2NOCl(g) &lt;-----&gt; 2NO(g) + Cl2(g), Kc = 8.0 at a certain temperature. What concentration of NOCl must be p
Nat2105 [25]
Answer is: <span>concentration of NOCl is 3.52 M.
</span>
Balanced chemical reaction: 2NOCl(g) ⇄ 2NO(g) + Cl₂<span>(g).
Kc = 8.0.
</span>[NOCl] = 1.00 M; equilibrium concentration.
[NO] = x.
[Cl₂] = x/2; equilibrium concentration of chlorine.<span>
Kc = </span>[Cl₂] ·[NO]² / [NOCl].
8.00 = x/2 · x² / 1.
x³/2 = 8.
x = ∛16.
x = 2.52 M.
co(NOCl) = [NOCl] + x.
co(NOCl) = 1.00 M + 2.52 M.
co(NOCl) = 3.52 M; the initial concentration of NOCl.


7 0
2 years ago
WILL GIVE BRAINLIEST HURRY ASAP!!!!!
Murrr4er [49]
We measure temperature in degrees of Fahrenheit
3 0
2 years ago
Read 2 more answers
What is FeBr3 compound name?
inessss [21]
Iron bromide. Iron bromide (FeBr3)
3 0
3 years ago
Read 2 more answers
Can someone help pls
zysi [14]
What is the problem u need help with
3 0
2 years ago
135 grams of sodium has ______ moles.<br><br> (Enter just the number for this one.)
just olya [345]

Answer : 135 grams of sodium has 5.869 moles.

Solution : Given,

Mass of sodium = 135 grams

Molar mass of sodium = 23 g/mole

Formula used :

\text{Moles of sodium}=\frac{\text{Mass of sodium}}{\text{Molar mass of sodium}}

Now put all the given values in this formula, we get

\text{Moles of sodium}=\frac{135g}{23g/mole}=5.869moles

Therefore, the moles of sodium present in 135 grams of sodium is, 5.869 moles.


6 0
3 years ago
Other questions:
  • A 29.05 gram sample of cobalt is heated in the presence of excess oxygen. A metal oxide is formed with a mass of 40.88 g. Determ
    12·1 answer
  • H2O has a mc021-1.jpgHvap = 40.7 kJ/mol. What is the quantity of heat that is released when 27.9 g of H2O condenses?
    9·2 answers
  • How many moles of trifluoromethanoic acid (CHF3O3S) are present in 9.0345 × 1024 molecules of (CHF3O3S)?
    11·1 answer
  • What is the volume of 3.5 moles of oxygen gas (O2) at standard temperature and pressure (STP)?
    12·2 answers
  • What are the five characteristics of a mineral
    10·1 answer
  • Select the correct answer.
    9·2 answers
  • Express the answers to these problems in the correct number of
    10·1 answer
  • An aqueous solution of ammonium sulfate is allowed to react with an aqueous solution of calcium nitrate.
    15·1 answer
  • Uses of carbon dioxide.​
    11·1 answer
  • Pls help if you only know the correct answer! Thanks! :)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!