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
Ipatiy [6.2K]
2 years ago
12

Please help me which one

Chemistry
1 answer:
mel-nik [20]2 years ago
3 0
Non of the above because protons and neutrons don’t mix with each one there
You might be interested in
Simple machines make work easier. Most simple machines reduce the amount of effort force needed to move an object. This cart has
Kruka [31]
I'm pretty sure it's D
8 0
3 years ago
If 200 g of water is heated from 20 C to 40 C, then what is the heat added in kilocalories (same as food calories)?
Maslowich

Answer: 4Kcal

Explanation:

H= mcø

M=200g

C= 1 cal/g/°c

Ø= 40-20=20°c

H= 200*1*20= 4000calories= 4Kcal

8 0
3 years ago
Which substance can not be decomposed by a chemical change?<br> (1) AlCl3 (3) HI<br> (2) H2O (4) Cu
user100 [1]
Cooper is the substance that can't be decomposed by a chemical chAnge. So 4)
5 0
3 years ago
Read 2 more answers
A certain food web is made up of turtles, pond weeds, water fleas, and tadpoles. Which organism is most likely the producer in t
Simora [160]
The pond weeds are the producers because they are a plant
6 0
2 years ago
Read 2 more answers
The copper(I) ion forms a chloride salt (CuCl) that has Ksp = 1.2 x 10-6. Copper(I) also forms a complex ion with Cl-:Cu+ (aq) +
Mnenie [13.5K]

Answer: (a) The solubility of CuCl in pure water is 1.1 \times 10^{-3} M.

(b) The solubility of CuCl in 0.1 M NaCl is 9.5 \times 10^{-3} M.

Explanation:

(a)  Chemical equation for the given reaction in pure water is as follows.

           CuCl(s) \rightarrow Cu^{+}(aq) + Cl^{-}(aq)

Initial:                         0            0

Change:                    +x           +x

Equilibm:                   x             x

K_{sp} = 1.2 \times 10^{-6}

And, equilibrium expression is as follows.

          K_{sp} = [Cu^{+}][Cl^{-}]

       1.2 \times 10^{-6} = x \times x

             x = 1.1 \times 10^{-3} M

Hence, the solubility of CuCl in pure water is 1.1 \times 10^{-3} M.

(b)  When NaCl is 0.1 M,

       CuCl(s) \rightarrow Cu^{+}(aq) + Cl^{-}(aq),  K_{sp} = 1.2 \times 10^{-6}

   Cu^{+}(aq) + 2Cl^{-}(aq) \rightleftharpoons CuCl_{2}(aq),  K = 8.7 \times 10^{4}

Net equation: CuCl(s) + Cl^{-}(aq) \rightarrow CuCl_{2}(aq)

               K' = K_{sp} \times K

                          = 0.1044

So for, CuCl(s) + Cl^{-}(aq) \rightarrow CuCl_{2}(aq)

Initial:                     0.1                 0

Change:                -x                   +x

Equilibm:            0.1 - x                x

Now, the equilibrium expression is as follows.

              K' = \frac{CuCl_{2}}{Cl^{-}}

         0.1044 = \frac{x}{0.1 - x}

              x = 9.5 \times 10^{-3} M

Therefore, the solubility of CuCl in 0.1 M NaCl is 9.5 \times 10^{-3} M.

7 0
3 years ago
Other questions:
  • According to newtons third law forces always occur in equal but____ pairs?
    13·1 answer
  • What is the pH of the solution in which the [H+] is 1.0 × 10–4 mol/L ?
    14·1 answer
  • Positive and Negative ions attract each-other and form chemical __________
    12·1 answer
  • Why does opening the air valve of a tire at a constant temperature decrease the pressure
    6·1 answer
  • A piece of iron has a volume of 11.6 cm3 and a mass of 63.5g what is its density?
    6·1 answer
  • How Many Atoms Are In 356.13 Grams Of Sn
    15·1 answer
  • given a density of 350 grams/cm3 and a mass of 25 grams. What is the volume using the equation involving density?​
    14·1 answer
  • What is a star, and how do they work
    7·2 answers
  • Will give brainliest, to whoever gets right. If you do a random answer I will report it.
    9·1 answer
  • According to the big bang theory, which statement is accurate about how the universe came to be?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!