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
yaroslaw [1]
3 years ago
15

The group of the periodic table determines the ___.

Chemistry
1 answer:
tatuchka [14]3 years ago
5 0

Answer: C. Number of valence electrons

Explanation: A group is a vertical column in the periodic table, which signifies the number of valence shell electrons in an element's atom. Example: all the elements in group 1 have 1 electron in their outer most shell.

You might be interested in
Oxygen in organic molecules usually has ______________ bonds
Angelina_Jolie [31]
I think the answer is covalent bonds. 
8 0
3 years ago
The paths in which electrons circle the nucleus according to the bohr model
drek231 [11]
The tiny positive<span> core of </span>an atom<span>; contains protons and neutrons. the paths in which electrons circle the nucleus according to the Bohr model. building blocks of matter represented by a symbol. </span>
5 0
3 years ago
How many moles of nitrogen, N, are in 76.0 g of nitrous oxide, N2O?
guapka [62]
If the balanced equation reads:

2N2 + O2 ———> 2N2O

You should have 1.72 moles of N2.
8 0
3 years ago
Read 2 more answers
At 2000 ∘c the equilibrium constant for the reaction 2no(g)⇌n2(g)+o2(g) is kc=2.4×103. part a if the initial concentration of no
luda_lava [24]

Answer:

[NO] = 1.72 x 10⁻³ M.  

Explanation:

  • For the reaction:

<em>2NO(g) ⇌ N₂(g)+O₂(g),</em>

Kc =  [N₂][O₂] / [NO]².

  • At initial time: [NO] = 0.171 M,  [N₂] = [O₂] = 0.0 M.
  • At equilibrium: [NO] = 0.171 M - 2x ,  [N₂] = [O₂] = x M.

∵ Kc =  [N₂][O₂] / [NO]².

∴ 2400 = x² / (0.171 - 2x)² .

<u><em>Taking the aquare root for both sides:</em></u>

√(2400) = x / (0.171 - 2x)  

48.99 = x / (0.171 - 2x)  

48.99 (0.171 - 2x) = x  

8.377 - 97.98 x = x

8.377 = 98.98 x.

∴ x = 8.464 x 10⁻².

<em>∴ [NO] = 0.171 - 2(8.464 x 10⁻²) = 1.72 x 10⁻³ M.  </em>

<em>∴ [N₂] = [O₂] = x = 8.464 x 10⁻² M.</em>

3 0
3 years ago
Hey what's the value of pi till<br>5 digits after decimal​
puteri [66]

Answer:

Pi to 5 decimals is 3.14159-

Brainlist pls!

P.S. It's a repeating number, but you can just put a (-), so that you don't have to type the whole thing out.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Which refers to the force that one massive object exerts to attract another object? velocity gravity acceleration newton
    13·2 answers
  • What will happen to a blood cell that is placed in a solution with a greater concentration of solutes?
    12·1 answer
  • If 21.3 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 297 Kelvin and 1.40 atmosph
    10·1 answer
  • For an exothermic reaction, what would the potential energy diagram most likely look like? a curve with a negative slope indicat
    5·2 answers
  • What molecule contains 12.17 g of carbon, 32.53 g of sulfur, and 72.19 g of chlorine
    11·1 answer
  • What information does an empirical formula give ?
    9·1 answer
  • What is the place of metalloids in the periodic table?
    10·1 answer
  • How do you know if a chemical reaction is balanced ?
    10·1 answer
  • What are the five types of chemical reactions?
    14·1 answer
  • A 750 mL sample of nitrogen is heated from 30°C to 92 C at
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!