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
yuradex [85]
3 years ago
11

.22

Chemistry
2 answers:
Alja [10]3 years ago
7 0

Answer:its b

Explanation:

andriy [413]3 years ago
5 0

Answer:

(a)  

First, write the balanced equation as follows:

Na2S(aq) + ZnCl2(aq) -> 2 NaCl(aq) + ZnS  (s)

Then, rewrite the equation so that all dissolved compounds are separated into their constituted ions. This is called, total ionic equation:

2 Na^+(aq) + S^{2-}(aq) + Zn^{2+}(aq) + 2 Cl^-(aq) -> ZnS (s) + 2 Na^+(aq) + 2 Cl^-(aq)

Finally, cancel the ions that appear both in reactants and products. This is called, net ionic equation:

S^{2-}(aq) + Zn^{2+}(aq) -> ZnS (s)

(b)

Balanced equation:

2 K3PO4(aq) + 3Sr(NO3)2(aq) -> Sr3(PO4)2 (s) + 6 KNO3 (aq)

Total ionic equation:

6 K^+(aq) + 2 PO_4^{3-} (aq) + 3 Sr^{2-} (aq) + 6 NO_3^- (aq) -> Sr3(PO4)2 (s) + 6 K^+(aq) + 6 NO_3^- (aq)

Net ionic equation:

2 PO_4^{3-} (aq) + 3 Sr^{2-} (aq) -> Sr3(PO4)2 (s)

(c)

Balanced equation:

Mg(NO3)2(aq) + 2NaOH(aq) -> Mg(OH)2 (s) + 2 NaNO3 (aq)

Total ionic equation:

Mg^{2+} (aq) + 2 NO_3^- (aq) + 2 Na^+ (aq) + 2 OH^- (aq) -> Mg(OH)_2 (s) + 2 NO_3^- (aq) + 2 Na^+ (aq)

Net ionic equation:

Mg^{2+} (aq) + 2 OH^- (aq) -> Mg(OH)_2 (s)

You might be interested in
What moves the pieces of salt on top of the speaker when the music is playing
Ksivusya [100]

Answer:

the friction?? or the movement

Explanation:

sense the salt is so light its easy to move

5 0
3 years ago
4. Which of the following statements accurately compares the wavelengths of the waves shown below?
wlad13 [49]

Answer:

B. wave 1 has a larger wavelength than wave 2

5 0
3 years ago
How to name the compounds in chemistry using roman numerals khan academy?
andrezito [222]
What are the answer choices?

7 0
3 years ago
Which of the two substances would have a higher melting point: O2 or quartz (SiO2)n? Explain your answer.
sesenic [268]

Answer:

quartz (SiO2)n

Explanation:

Melting point is defined as the temperature or point at which the substances change its state from solid to liquid.

Quartz (SiO2)n has high melting point than O2 because Quartz (SiO2)n is found in the form of hard, crystalline mineral that is made up of silicon and oxygen atoms having strong covalent bonds between all the atoms. So, a lot of energy is required to break the bond between the atoms and it has a high melting point.

Hence, the correct answer is quartz (SiO2)n.

7 0
3 years ago
Some types of bar soap will float in water. What are the dispersed particles?
Sergio039 [100]

Answer:

cell's

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which term is same for one mole of oxygen and one mole of water
    10·1 answer
  • Use the equation to determine what mass of FeS must react to form 326 g of FeCl2.
    7·1 answer
  • How many protons are in an element with an atomic number of 8 and a mass number of 18?
    14·2 answers
  • Which formula is an empirical formula?
    10·2 answers
  • 6) (a) Calculate the absorbance of the solution if its concentration is 0.0278 M and its molar extinction coefficient is 35.9 L/
    8·1 answer
  • What is the stereochemistry of the alcohol produced in the reaction of (S)-3-iodoheptane with NaOH?
    7·1 answer
  • In witch step did a chemical change most likely occur
    14·1 answer
  • Ag + HCl --> ?
    13·1 answer
  • Both plant and animal cells contain:
    12·1 answer
  • ii. If the pressure after landing was 1.0 atm, what was the volume of the passenger's collapsed water bottle? (Assume the bottle
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!