huyenanhh

Kindly help me to solve this question.

6.  

Use the solubility generalizations on the information page to predict if one or more precipitates will form when aqueous solutions of silver(I) nitrate (AgNO₃) and potassium chloride (KCl) are mixed.

Write the formula of any precipitate that could form in one of the boxes. If a box is not needed, leave it blank. If no precipitate is predicted, leave both boxes blank.

Aqueous solutions of potassium chloride and silver nitrate are mixed together. Which statement is correct?

A. 2 precipitates form

B. A gas is released

C. AgCl will precipitate from solution

D. KNO3 will precipitate from solution

E. No reaction will occur

Aqueous solutions of Ag₂SO₄ and NH₄NO₃ are mixed together. Which statement is correct?

a) Both AgNO₃ and (NH₄)₂SO₄ precipitate from solution.

b) A gas is released.

c) (NH₄)₂SO₄ will precipitate from solution.

d) AgNO₃ will precipitate from solution.

e) No reaction will occur.

Aqueous solutions of sodium sulfide and potassium chloride are mixed together. Which
statement is correct?

a) Both NaCl and K₂S precipitate from solution.

b) No reaction will occur.

c) K₂S will precipitate from solution.

d) NaCl will precipitate from solution.

e) A gas is released.

Aqueous solutions of sodium sulfideand copper(II) chloride are mixed together. Which statement iscorrect?

a) Both NaCl and CuS precipitatefrom solution.

b) No reaction willoccur.

c) CuS will precipitate fromsolution.

d) NaCl will precipitate fromsolution.

e) A gas is released.

The answer is c but i dont knowwhy

11. Aqueous solutions of sodium sulfide and copper(II) chloride are mixed together. Which statement is correct? A) CuS will precipitate from solution. B) NaCl will precipitate from solution. C) No precipitate will form. D) Both NaCl and CuS will precipitate from solution. E) No reaction will occur.

Which is the limiting reagent when 9 Ca atoms and 8 H3PO4molecules react and produce 3 molecules of Ca3(PO4)2 and 9molecules of H2? Write a balanced chemical equation.

a. H2

b. H3PO4

c. Ca

d. Ca3(PO4)2

e. None of these.