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
bogdanovich [222]
3 years ago
7

Write the formula for a complex formed between ag and nh3, with a coordination number of 2.

Chemistry
1 answer:
Darya [45]3 years ago
5 0
Combination number 2 for silver means that it bonded to two species in the complex, in this way:

- Ag -

NH3 has coordination number one, which mean tha it only bonds to one speciesÑ

NH3 -

So, the complex is NH3 - Ag - NH3.

=> Molecular formula: Ag [NH3]2, now if you count the oxidation numbers you get:

 (2+) + 2*(-3) + 6(+1) = +2  - 6 + 6 = +2. So the complex has a net 2 positive charge, which gives the final fomula:

[Ag (NH3)2 ] (2+), where the final (2+) is a superscript that tells the charge of the complex.
You might be interested in
100 PONTS AND BRAINLIEST <br><br> What is the maximum number of formula units of NaCl in one mole?"
natulia [17]

Answer:

The meaning and usefulness of the mole Page 2 2 • One mole of NaCl contains 6.022 x 1023 NaCl formula units. Use the mole quantity to count formulas by weighing them.

5 0
3 years ago
Read 2 more answers
If the ka of a monoprotic weak acid is 1.2 × 10-6, what is the ph of a 0.40 m solution of this acid?
frez [133]
First, we write out a balanced equation.
HA <--> H(+) + A(-)

Next, we create an ICE table

        HA     <-->      H+     +    A-
[]i     0.40M            0M           0M
Δ[]    -x                   +x            +x
[]f     0.40-x             x              x

Next, we write out the Ka expression.

Ka = [H+][A-]/[HA]

Ka = x*x/(0.40-x) 

However, because Ka is less than 10^-3, we can assume the amount of dissociation is negligible. Thus,

Assume 0.40-x ≈ 0.40

Therefore, 1.2x10^-6 = x^2/0.40

Then we solve for the [H+] concentration, or x

\sqrt{0.40(1.2*10^{-6})} =x

x=6.93x10^-4

Next, to find pH we do 

pH = -log[H+]

pH = -log[6.93x10^-4]

pH = 3.2
5 0
3 years ago
Please help me with this questions, sorry:(
natulia [17]

Answer:

yes

Explanation:

the water may freeze at low winter temperatures but  it will still be there

8 0
3 years ago
What is a good description of potential energy? (1 point)
Brilliant_brown [7]

Answer:

I think the answer is stored energy

Explanation:

8 0
4 years ago
Why did Dalton think it was important to use his system of symbols for the chemical elements?
Dimas [21]

Explanation:

to remind people that atoms were

4 0
4 years ago
Other questions:
  • addition of a catalyst to a reaction and increasing the temperature of a reaction generally have the same effect on the reaction
    14·1 answer
  • Draw the product formed when cyclohexene is reacted with H2 in the presence of Pt. Note: If adding hydrogen atoms to a carbon at
    15·1 answer
  • Which rock would be the best source of the mineral garnet?
    12·2 answers
  • This reaction was monitored as a function of time:
    6·1 answer
  • If the Density of an object is 5.2 g/cm 3 , and its volume is 3.7 cm 3 , what is its mass?
    11·2 answers
  • Which of these statements best explains why chemistry is reliable?
    13·2 answers
  • (04.04 MC)<br> Which table best shows the impacts resulting from human activity? (6 points)
    9·1 answer
  • The boiling point of a pure substance is defined as the temperature at which
    14·1 answer
  • Match the landform to its description.
    12·2 answers
  • Identify the ideal gas law equation.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!