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
Monica [59]
3 years ago
10

When fe(no3)2(aq) and na2s(aq) are mixed, what is the black coloured precipitate that forms?

Chemistry
1 answer:
marshall27 [118]3 years ago
7 0
The black coloured precipitate that form is IRON ll SULPHIDE, FeS.
Iron sulphide ll sulphide is black in colour and is insoluble in water. It possess very high melting temperature and react in acids. Iron ll sulphide is used as pigment in hair dyes, glasses, bottles and paints. It is also used as lubricant.
You might be interested in
Calculate the molecular formula of a compound with the empirical formula C5H11 and a molar mass of 142.32 grams/mole
MA_775_DIABLO [31]
Relative formula mass C₅H₁₁ = 71

Now divide the molar mass by the RFM = 142.32 / 71 = 2

Now C₍₅ₓ₂₎H₍₁₁ₓ₂) = C₁₀H₂₂

Hope that helps
6 0
3 years ago
ASAP PLZ HELP I WILL MARK BRAINLIEST Based on the diagram, what can you conclude about the pole of the magnet? O It is a south p
Vinvika [58]

Answer:C

Explanation:I took the test

3 0
3 years ago
Read 2 more answers
How do you know if a chemical reaction is balanced ?
Alenkasestr [34]

Hey there!

We know that a chemical reaction is balanced when there is the same amount of each element on both sides of the equation.

According to the law of conservation of mass, matter cannot be created or destroyed, so we must have the same amount of each element on each side of a chemical equation.

We count the amount of each element on each side, and the products should have the same number as the reactants.

Hope this helps!

7 0
3 years ago
PLEASE HELP!! <br> this is on USAtestprep <br> a)<br> b)<br> c)<br> d)
Rudik [331]
The answer would be A from what I know
3 0
3 years ago
Can we make a universal rule regarding spontaneity of reaction based on the energy change of a system?
aliina [53]

Answer:

if gibbs free energy change is negative then the reaction is spontaneous

8 0
3 years ago
Other questions:
  • What is the ideal gas constant?
    6·1 answer
  • Who discovered sodium?
    6·2 answers
  • Help im stuck on a problem
    15·2 answers
  • I know that the answer is C. 8, but can you explain step by step how to get that answer?
    14·1 answer
  • CALCULATE: you need to type/show your work. There is no credit if the work is not show/typed Titanium has five common isotopes:
    7·1 answer
  • During your future endeavors in chemistry you will inevitably do a bunch of acid-base problems. Of the strong bases above, calci
    9·1 answer
  • The process by which organisms makes more<br> organisms like themselves is called
    13·2 answers
  • Sally has touched a hot pan on the stove and burnt her hand. This example shows what type of heat transfer?
    12·1 answer
  • How many grams of KOH do we need to make 250.0ml of a 0.75 M
    6·1 answer
  • Which compound when dissolved in water, will have the lowest freezing point?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!