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
dimulka [17.4K]
2 years ago
8

Correct answer please i need it before 12:07

Chemistry
1 answer:
choli [55]2 years ago
6 0

Answer:

xenon

Explanation:

Xenon is a non-metal, odorless gas, consist of single atoms, colorless, and 8 valence electrons out of everything else on this list.

You might be interested in
At equilibrium, the concentrations in this system were found to be [N2]=[O2]=0.200 M and [NO]=0.400 M.
Kipish [7]

Answer:

The concentration in equilibrium of NO is 0,550M.

Explanation:

For the reaction:

N₂(g) + O₂(g) ⇄ 2NO

The equilibrium constant is defined as:

k = [NO]² / [N₂][O₂] <em>(1)</em>

Replacing for the concentrations in equilibrium:

k = (0,400M)² / (0,200M)(0,200M)

<em>k = 4,000</em>

If you add more NO until 0,700M, the equilibrium concentrations will be:

[NO] = 0,700M-2x

[N₂] = 0,200M+x

[O₂] = 0,200M+x

Replacing in (1)

4,000 =  (0,700M-2x)² / (0,200M+x)²

4,000 =  4x²- 2,8x + 0,49 / x² + 0,4x + 0,04

4x² + 1,6x + 0,16 = 4x²- 2,8x + 0,49

4,4x = 0,33

x = 0,075M

That means that concentration in equilibrium of NO is:

[NO] = 0,700M - 2×0,075M = <em>0,550M</em>

I hope it helps!

4 0
3 years ago
Vhat is the molarity of an Nal solution that contains 7.0 g of Nal in 23.0 mL of solution?
Alika [10]

Answer:

Molarity = 5.22 M

Explanation:

Given data:

Mass of sodium chloride = 7.0 g

Volume of solution = 23.0 mL ( 23.0/1000 = 0.023 L)

Molarity = ?

Solution;

Number of moles of NaCl = 7.0 g/ 58.4 g/mol

Number of moles of NaCl = 0.12 mol

Molarity = moles of solute / volume in litter

Molarity = 0.12 mol /  0.023 L

Molarity = 5.22 M

4 0
3 years ago
In a particular reaction, 53.8 g of liquid silicon tetrachloride is added to 65.0 g of solid magnesium to produce solid magnesiu
kotykmax [81]

Answer: Mg is the excess reactant for the forward reaction.

Explanation: It is a stoichiometry problem and solved with the help of given grams and using balanced equation. Grams of both the reactants are converted to moles and divided by their coefficients. The excess reactant is the one for which we get the highest number on doing above steps.

The balanced equation is:

SiCl_4(l)+2Mg(s)\rightarrow 2MgCl_2(s)+Si(s)

Molar mass of silicon tetra chloride is 169.9 gram per mol and the molar mass of Mg is 24.3 gram per mol.

53.8gSiCl_4(\frac{1mol}{169.9g})

= 0.317molSiCl_4

65.0gMg(\frac{1mol}{24.3g})

= 2.67 mol Mg

From balanced equation, the coefficient of silicon tetra chloride is 1 and that of Mg is 2. So, we will divide the moles of silicon tetra chloride by 1 and that of Mg by 2 and see which one gives highest number.

For silicon tetra chloride, \frac{0.317}{1}  = 0.317

and for Mg, \frac{2.67}{2}  = 1.34

The highest number is for Mg and so the excess reactant for the forward reaction is Mg.

7 0
3 years ago
Which of the following increases the average kinetic energy of colliding particles
Solnce55 [7]
I'm pretty sure the answer is Temperature
5 0
3 years ago
In a disproportionation reaction, the disproportionate substance
trapecia [35]

Answer:

The answer is C: has at least three oxidation states.

Explanation:

you're welcome

7 0
3 years ago
Read 2 more answers
Other questions:
  • Hno3 is an Arrhenius what
    15·1 answer
  • Which one of the following is a common acid? A. Antacid
    8·2 answers
  • In general, the higher the charge on the ions in an ionic compound, the more favorable is the lattice energy. Why do some stable
    8·1 answer
  • How can a saturated solution of a solid be made unsaturated?
    7·2 answers
  • Which of the following is NOT a homogeneous mixture? *<br> koolaid<br> soda<br> tea<br> water
    5·1 answer
  • What is the atomic number of neon?
    10·1 answer
  • In what situation can energy be created or destroyed?
    13·1 answer
  • Alligators are the large predators that eat many smaller animals in a swamp how might removing the alligators from a swamp habit
    7·1 answer
  • Atomic radius and electronegativity trends are...
    12·1 answer
  • What is the molarity of a solution containing 11.2 g Ca(N03)2 in 175 mL of solution?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!