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
trapecia [35]
3 years ago
6

Which of the substances below would dissociate into ions when dissolved in water? Select all that apply.

Chemistry
1 answer:
dusya [7]3 years ago
7 0

Answer:

B. NaBr

D. KOH

Explanation:

Below is the solubility rules given for you knowledge.

Salts of

  • Group 1 elements are soluble(Li^+, Na^+, K^+,Cs^+, Rb^+)
  • Ammonium ion is soluble (NH4^+)
  • The nitrate are generally soluble( NO3^-)
  • of Cl- , Br- , and I- are soluble, except Ag+ , Pb+2, and (Hg2)+2
  • most sulfate are soluble, except Ba+2, Ca+2,Pb+2, Ag+, Sr+2.
  • most hydroxide salts are only slightly soluble, except NH+4, Li+, Na+, K+
  • Most carbonates are insoluble (CO3 2-) Except group 1 and NH+4
  • most phosphate are insoluble except group 1 and NH+4  

so using the rules above

NaBr , KOH are soluble, Pb(OH)2 is slightly soluble and AgCl is not soluble.

You might be interested in
A sample of neon occupies a volume of 478 mL at STP. What will be the volume of the neon when the pressure is reduced to 93.3 kP
Andre45 [30]

The volume of neon when the pressure is reduced to 93.3 kPa is 519 mL.

Explanation:

The kinetic theory of gases is mostly based on Boyle's law. From the Boyle's law, the pressure experienced by any gas molecules is inversely proportional to volume of the gas molecules. Also this inverse relation is obeyed if and only if the number of moles and temperature of the gas molecules remained constant.

So,P=\frac{1}{V}

So if there is a change in pressure then there will be inverse change in volume. That means if there is decrease in the pressure of gas molecules then there will be increase in the volume and vice versa.

So the Boyle's law is combined as P_{1} V_{1} = P_{2} V_{2}

As here the initial pressure or P_{1} is 1 atm or 101.3 kPa and the initial volume is 478 mL. Similarly, the final pressure is 93.3 kPa and the final volume will be

101.3*10^{3}*478*10^{-3}  = 93.3*10^{3} * V_{2}

V_{2} = 519 mL

So, the volume of neon when the pressure is reduced to 93.3 kPa is 519 mL.

5 0
4 years ago
a sample of argon gas is cooled and its volume went from 380. mL to 250. mL. If its final temperature was -55.0C, what was its o
inn [45]

Answer:

The initial temperature was 58.4°C

Explanation:

Given the following data:

initial volume = V₁ = 380 mL = 0.38 L

final volume = V₂ = 250 mL = 0.25 L

final temperature = T₂ = -55°C = 218 K

According to Charles's law, the volume of a gas is <em>directly proportional to the temperature</em> (in Kelvin). The mathematical expression is:

V₁/T₁= V₂/T₂

So, we calculate the initial temperature (V₁) as follows:

T₁ = T₂/V₂ x V₁ = 218 K/(0.25 L) x 0.38 L = 331.36 K ≅ 331.4 K

Finally, we convert the initial temperature from K to °C:

T₁= 331.4 K - 273 = 58.4°C

6 0
3 years ago
CaCl2<br> Ca +<br> CI2<br> Balance this equation
Elis [28]

To balance Ca + Cl2 = CaCl2 you'll need to be sure to count all of atoms on each side of the chemical equation.

Once you know how many of each type of atom you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation for Calcium + Chlorine gas.

3 0
3 years ago
The bulk of nuclear waste is in the form of ______
Alina [70]

Answer:

The bulk of nuclear waste is in the form of <u>solid ceramic pellets</u>.

Explanation:

Nuclear fuel loaded into commercial reactors is generally in the form of solid ceramic pellets that are stacked into metal tubes and bundled together in fuel assemblies. After the atoms in the pellet split to release their energy, the pellets in tubes emerge as nuclear waste.

Pls, choose me as brainliest!

7 0
3 years ago
A balanced equation for the dissociation of KI
Ann [662]

Answer:

The balanced equation for the dissociation of KI is

KI →  K⁺ + I⁻

Explanation:

KI is the potassium iodide.

K⁺ comes from the KOH, a strong base, so the cation is the conjugate weak acid and in water it does not react.

I⁻ comes from HI, a strong acid, so the anion is the conjugate weak base and in water it does not react.

K⁻  + H₂O ← KOH + H⁺

I⁻ + H₂O ← HI + OH⁻

That's why the arrow in the reaction is in the opposite direction.

3 0
3 years ago
Other questions:
  • What is the most likely evidence of an energy transformation taking place when a skater glides over ice? A.Skating blades become
    14·1 answer
  • A sample of H2SO4 contains 2.02 g of hydrogen, 32.07 g of sulfur, and 64.00 g of oxygen. How many grams of sulfur and grams of o
    13·1 answer
  • A car is moving at 12 m/s and has a mass of 600kg. What is the kinetic energy of the car.
    13·1 answer
  • When scientists say that a theory can never be proven , what are they actually saying?
    10·2 answers
  • Two chemicals A and B are combined to form a chemical C. The rate, or velocity, of the reaction is proportional to the product o
    6·1 answer
  • General equilibrium problems. ICE type problems.a. Isopropyl alcohol can dissociate into acetone and hydrogen according to the r
    10·1 answer
  • Which of the following results in a decrease in the entropy?
    10·1 answer
  • a sample of helium gas occupies 14.3 L at 23 degrees C and 0.956 atm. What volume will it occupy at 40 degrees C and 1.20 atm
    7·1 answer
  • Convert each of the measurements given to the new unit stated using the factor label method (dimensional analysis). Show all wor
    7·1 answer
  • I Need this today really bad... please help.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!