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
madam [21]
3 years ago
12

QUESTION 57 Select the diamagnetic ion. A. Ni2+ B. Cu2+ C. Sr2+ D. Cr3+​

Chemistry
1 answer:
VMariaS [17]3 years ago
5 0

Answer:

c

Explanation:

You might be interested in
At 1000 K, a sample of pure NO2 gas decomposes. 2 NO2(g) equilibrium reaction arrow 2 NO(g) + O2(g) The equilibrium constant KP
kirill115 [55]

<u>Answer:</u> The pressure of NO and NO_2 in the mixture is 0.58 atm and 0.024 atm respectively.

<u>Explanation:</u>

We are given:

Equilibrium partial pressure of O_2 = 0.29 atm

For the given chemical equation:

                   2NO_2(g)\rightleftharpoons 2NO(g)+O_2(g)

Initial:              a

At eqllm:        a-2x          2x          x

Calculating for the value of 'x'

\Rightarrow x=0.29

Equilibrium partial pressure of NO = 2x = 2(0.29) = 0.58 atm

Equilibrium partial pressure of NO_2 = a - 2x = a - 2(0.29) = a - 0.58

The expression of K_p for above equation follows:

K_p=\frac{p_{O_2}\times (p_{NO})^2}{(p_{NO_2})^2}

We are given:

K_p=158

Putting values in above expression, we get:

158=\frac{0.29\times (0.58)^2}{(a-0.58)^2}\\\\a=0.555,0.604

Neglecting the value of a = 0.555 because it cannot be less than the equilibrium concentration.

So, a=0.604

Equilibrium partial pressure of NO_2 = (a - 0.58) = (0.604 - 0.58) = 0.024 atm

Hence, the pressure of NO and NO_2 in the mixture is 0.58 atm and 0.024 atm respectively.

4 0
3 years ago
Which acid is almost completely ionized in a dilute solution at 298k?
Alex777 [14]
Considering choices; 
a. CH3COOH
b. H2S
c. H2PO4
d. HNO3
The answer would be HNO3; this is because it the strongest acid. Strong acids are acids that are fully ionized while weak acids are only partially ionized. At the same concentrations, strong acids have a higher concentration of hydrogen than weak acids. Examples of strong acids include; hydrocloric acid and nitric acid, while weak acids include; ethanoic acids. 
5 0
4 years ago
Part 1: Draw the major organic product for the proton transfer reaction between sodium hydride and ethanol; be sure to include l
valina [46]

Answer:

Major product ethoxide ion

Explanation:

  • Sodium hydride acts as a strong base towards ethanol.
  • Hydride ion abstracts one proton from -OH group in ethanol to produce sodium ethoxide and hydrogen gas.
  • It is an example of acid-base reaction where sodium hydride acts as a base and ethanol acts as an acid
  • Structure of major organic product i.e. ethoxide ion has been shown below.

4 0
3 years ago
What kind of reaction is happening when glaze is fired
bija089 [108]

Answer:

Oxidation and Reduction occurs

Explanation:

5 0
3 years ago
Which is the pathway of light as it travels through the eye?cornea → iris → retina → lenscornea → iris → lens → retinairis → cor
Vikki [24]

Answer:

Cornea >iris>lens >retina

Explanation:

Can't exactly figure out the answer but I think it should look like this

7 0
3 years ago
Other questions:
  • What distance does electromagnetic radiation travel in 33 fs?
    10·1 answer
  • Y=2;8;18;18;3 which group is in Y in
    7·1 answer
  • A current of 2.50 amps is passed through an electrolytic cell containing a solution of M(NO3)2, where M represents an unidentifi
    11·1 answer
  • What is the structure and bonding in zinc?​
    12·1 answer
  • NEED ANSWERS ASAP!!! 20 POINTS IF YOU ANSWER ALL QUESTIONS(NO LINKS, SPAMMING OR GUESSING) PLEASE I REALLY NEED THE HELP!!!!
    11·1 answer
  • The the mass of an object the the forest needed to overcome the force of gravity?
    15·1 answer
  • How many moles of water are contained in 0.250 mole
    12·2 answers
  • What's a positive feedback loop
    10·1 answer
  • How much heat is released if you produced 1.24 mol of Oz?
    14·1 answer
  • HELLLPPPPP ME!!!!!!!!!!!!!!!AAAHHHHH
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!