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
almond37 [142]
3 years ago
10

How can you tell a Cu(No3)2 solution from a Ni(NO3)2 solution?

Chemistry
1 answer:
kupik [55]3 years ago
3 0

Answer: Cu(NO_3)_2 solution has blue color and Ni(NO_3)_2 solution has bright green color.

Explanation:

Cu(NO_3)_2(aq)\rightarrow Cu^{2+}(aq)(blue)+ NO_{3}^{1-}(aq)

Cu(NO_3)2 in its aqueous solution gives blue color solution. Copper being transition metal and gives characteristic color in their in aqueous solution.

Ni(NO_3)_2(aq)\rightarrow Ni^{2+}(aq)(green)+ NO_{3}^{1-}(aq)

Ni(NO_3)2 in its aqueous solution gives bright green color solution. Nickel is also a transition metal and gives characteristic color in their in aqueous solution.

You might be interested in
Concentrated HCl is 37% m/m. The density of the solution is 1.19 g/mL. Assume you have 100.0 grams of SOLUTION.
sdas [7]

Answer:

M HCl sln = 12.0785 M

Explanation:

  • molarity (M) [=] mol/L
  • %mm = ((mass compound)/(mass sln))*100

∴ mass sln = 100.0 g

∴ δ sln = 1.19 g/mL

∴ % m/m = 37 %

⇒ 37 % =((mass HCl/mass sln))*100

⇒ 0.37 = mass HCl / 100.0 g

⇒ 37 g = mass HCl

∴ molar mass HCl = 36.46 g/mol

⇒ mol HCl = (37 g)*(mol/36.46 g) = 1.015 mol

⇒ volume sln = (100 g sln)*(mL/1.19 g) =  84.034 mL = 0.084034 L

⇒ M HClsln = 1.015 mol/0.084034 L

⇒ M HCl sln = 12.0785 M

7 0
2 years ago
 Lime is a basic substance which is sometimes put onto acidic soils to make them neutral.
earnstyle [38]

Answer:

the correct answer is Blue

5 0
2 years ago
If all the water in 430.0 mL of a 0.45 M NaCI solution evaporates what is the mass of NaCI will remain
skad [1K]

Answer:

11.31 g.

Explanation:

Molarity is defined as the no. of moles of a solute per 1.0 L of the solution.

M = (no. of moles of solute)/(V of the solution (L)).

<em>∴ M = (mass/molar mass)of NaCl/(V of the solution (L)).</em>

<em></em>

<em>∴ mass of NaCl remained after evaporation of water = (M)(V of the solution (L))(molar mass)</em> = (0.45 M)(0.43 L)(58.44 g/mol) = <em>11.31 g.</em>

6 0
2 years ago
Read 2 more answers
How do I round 10.25 to only 3 significant digits
Lady_Fox [76]
10.3 is good the correct rounding of three sig figures

3 0
3 years ago
How do I get an atomic mass
ahrayia [7]
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons.
3 0
3 years ago
Other questions:
  • What is the most effective way to maintain good indoor air quality?
    14·1 answer
  • What happens when you regurgitate?
    9·1 answer
  • Helppp please pleaseeee
    7·1 answer
  • What do waves carry from place to place​
    12·1 answer
  • In a college of exactly 2940 students, exactly 60 % are male. What is the number of female students?
    7·2 answers
  • Which is easier to observe, physical or chemical properties? why?
    12·2 answers
  • 1. Antarctica is a frozen land, so cold and icy that no trees can grow there. Yet scientists have discovered fossils(remains pre
    8·1 answer
  • Which physical property does the inventor need to consider when choosing a
    14·1 answer
  • In general, the greatest variation happens in populations of organisms that reproduce_____.
    14·1 answer
  • Which of the following elements does not form an ion with a charge of plus one hydrogen fluorine sodium or potassium
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!