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
ohaa [14]
3 years ago
6

Pls answer quickkk :)))

Chemistry
1 answer:
postnew [5]3 years ago
4 0

Answer:

c turns back when iodine is added result indicated a chemical reaction

You might be interested in
What mass of calcium carbonate (in grams) can be dissolved by 4.0 g of hcl? (hint: begin by writing a balanced equation for the
stiks02 [169]
The reaction between calcium carbonate and hydrochloric acid can be expressed through the chemical reaction,

    CaCO3 + 2HCl --> CaCl2 + H2O + CO2

The molecular weight of calcium carbonate is 100 g/mol while that of hydrochloric acid is 36.45. The equation above depicts that 100 g of calcium carbonate can be dissolved in 72.9 g of hydrochloric acid. 

    x = (4 g HCl)(100 g CaCO3 / 72.9 HCl)
      x = 5.49 g

Answer: 5.49 g
8 0
3 years ago
Read 2 more answers
What is one pro and one con of mining?
blondinia [14]

Answer:

Pro exercise con suffication

Explanation:

...

8 0
2 years ago
Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the equation:
weqwewe [10]

Answer:

D) [PCl5]=0.00765M,[PCl3]=0.117M,and [Cl2]=0.0.117M

Explanation:

Based on the reaction:

PCl₅(g) ⇄ PCl₃(g) + Cl₂(g)

And knowing:

Kc = [PCl₃] [Cl₂] / [PCl₅] = 1.80

When you add PCl₅ into a flask, this gas will react producing PCl₃ and Cl₂ until [PCl₃] [Cl₂] / [PCl₅] = 1.80

This could be written as:

[PCl₃] = X

[Cl₂] = X

[PCl₅] = 0.125M - X

<em>Where X represents the moles of PCl₅ that react, </em><em>reaction coordinate.</em>

Replacing in Kc expression:

[PCl₃] [Cl₂] / [PCl₅] = 1.80

[X [X] / [0.125 - X] = 1.80

X² = 0.225 - 1.80X

0 = -X² -1.80X + 0.225

Solving for X:

X = -1.9M → False solution, there is no negative concentrations

X = 0.11735M → Right solution.

Replacing, concentrations in equilibrium are:

[PCl₃] = X

[Cl₂] = X

[PCl₅] = 0.125M - X

[PCl₃] = 0.117M

[Cl₂] = 0.117M

[PCl₅] = 0.00765M

And right option is:

<h3>D) [PCl5]=0.00765M,[PCl3]=0.117M,and [Cl2]=0.0.117M</h3>
7 0
3 years ago
An object weighing 80 kg floating in a fluid. How does the object's density compared to the density of the fluid
posledela
The object is less then the fluid c
6 0
3 years ago
Read 2 more answers
Linoleic acid is a polyunsaturated fatty acid found, in ester form, in many fats and oils. Its doubly allylic hydrogens are part
Ganezh [65]

Answer:

Explanation:

Linoleic acid, which is polyunsaturated fatty acid, found

the three resonance structures are given as,

8 0
3 years ago
Other questions:
  • How many oxygen atoms are in 2.80 g of quartz?
    5·1 answer
  • What is the final acetate ion concentration when 69. g Ba(C2H3O2)2 is dissolved in enough water to make 970. mL of solution? The
    5·1 answer
  • How many grams are in 2.3 moles of calcium phosphate, Ca3(PO3)2
    12·1 answer
  • 1)Explain why the overall charge of a nucleus positive ?
    13·1 answer
  • Which of these illustration shows isotopes of the elements boron b
    9·1 answer
  • Help help help help help<br> What is an action your citizens can take to prevent water waste?
    7·1 answer
  • Latitude plays a major role in determining the climate, or long-term weather patterns, of an area. Because of differences in the
    14·1 answer
  • Help plz and no link​
    12·2 answers
  • A) 24 g<br> B) 36 g<br> C) 48 g<br> D) 60 g
    11·1 answer
  • What is the boiling point (in °C) of a 1.56 m
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!