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
Alexxandr [17]
3 years ago
7

Which symbol represents a particle that has the same total number of electrons as S2-?

Chemistry
1 answer:
Oksanka [162]3 years ago
8 0
The correct answer is D) Ar
You might be interested in
1. Which of the following components does not make up rock salt? *
horsena [70]

Answer:

In my opinion the third one is write.

Explanation:

soil.

4 0
3 years ago
What is the number of molecules present in 1.12 dm^3 of nitrogen gas at STP​
Anuta_ua [19.1K]

Answer:

\huge\boxed{\sf No.\ of\ molecules = 3 * 10\²\² \ molecules}

Explanation:

<u>Given Data:</u>

Volume = v = 1.12 dm³ = 1.12 L

Density of nitrogen at STP = D = 1.25 g / L

Molar mass = M = 14 * 2 = 28 g / mol

Avogadro's Number = \tt{N_{A}} = 6.023 * 10²³ mol⁻¹

<u>Required:</u>

No. of molecules = ?

<u>Formula:</u>

\tt{No. \ of \ molecules = \frac{Density * Volume}{Molar\ Mass} * N_{A}}

<u>Solution:</u>

No. of molecules = (1.25*1.12) / 28 * (6.023 * 10²³)

No. of molecules = ( 1.4 / 28 ) * 6.023 * 10²³

No. of molecules = 0.05 * 6.023 * 10²³

No. of molecules = 0.3 * 10²³

No. of molecules = 3 * 10²² molecules

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
4 0
3 years ago
When 8.00x10^22 molecules of ammonia react with 7.00x10^22 molecules of oxygen according to the chemical equation shown below, h
Pavel [41]
NH₃:

N = 8*10²²
NA = 6.02*10²³

n = N/NA = 8*10²²/6.02*10²³ ≈ 1.33*10⁻¹=0.133mol

O₂:

N=7*10²²
NA = 6.02*10²³

n = N/NA = 7*10²²/6.02*10²³ = 1.16*10⁻¹=0.116mol

4NH₃                   <span>+                        3O</span>₂                      ⇒<span>          2N</span>₂<span> + 6H</span>₂<span>O
</span>4mol                     :                        3mol                   :             2mol
0.133mol             :                        0.116mol           :             0,0665mol
limiting reactant

N₂:

n = 0.0665mol
M = 28g/mol

m = n*M = 0.0665mol*28g/mol = <u>1,862g</u>
6 0
4 years ago
When sodium atoms (Na) and chlorine atoms (CT) join to make sodium chloride, or table salt, they form an ionic bond, Using this
jasenka [17]

Answer:

D I'm pretty sure.

Explanation:

I'm taking the quiz right now and D makes the most sense.

3 0
3 years ago
Read 2 more answers
Is N2H4 polar, nonpolar, or ionic?
Fynjy0 [20]
<span>N2H4 is a polar molecule </span>
7 0
4 years ago
Read 2 more answers
Other questions:
  • Closed car with the windows rolled up heats up on sunny days because of _____.
    8·2 answers
  • Changes of motion are caused by
    11·1 answer
  • What does weight measure?
    14·1 answer
  • True or False. The greater the
    11·1 answer
  • Question 10
    15·1 answer
  • You want to decaffeinate your coffee by extracting the caffeine out with dichloromethane (they don't do it that way anymore, but
    5·1 answer
  • Another student suggests putting some cotton wool in the top of the flask.
    12·1 answer
  • What is the temperature of 0.5 moles of water vapor that occupies 120 dm3 and applies a pressure of 15,000 Pa to its container?
    8·1 answer
  • Which of the following reactions depicts a synthesis reaction?
    11·1 answer
  • Which of the following equations represents the law of conservation of mass?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!