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
soldier1979 [14.2K]
3 years ago
5

The vapor pressure of dichloromethane, c h 2 c l 2 , at 0 ∘ c is 134 mmhg . the normal boiling point of dichloromethane is 40. ∘

Chemistry
1 answer:
sladkih [1.3K]3 years ago
8 0
<span> the </span>vapor pressure<span> of the liquid at a temperature T</span>2<span> ... Now, </span>it's<span> important to realize that the </span>normal boiling point<span> of a substance is measured at an atmoshperic ... ΔHvap=−ln(</span>134mmHg760mmHg<span> )⋅8.314J mol−1K−1 (1(273.15+</span>0)−1(273.15+40))K−1 ... Give equations that can be used tocalculate<span> the .

Now try it yourself :)</span>
You might be interested in
The following reaction plays a key role in the destruction of ozone In the atmosphere:
lys-0071 [83]

Answer:

19.91 J/K

Explanation:

The entropy is a measure of the randomness of the system, and it intends to increase in nature, thus for a spontaneous reaction ΔS > 0.

The entropy variation can be found by:

ΔS = ∑n*S° products - ∑n*S° reactants

Where n is the coefficient of the substance. The value of S° (standard molar entropy) can be found at a thermodynamic table.

S°, Cl(g) = 165.20 J/mol.K

S°, O3(g) = 238.93 J/mol.K

S°, O2(g) = 205.138 J/mol.K

So:

ΔS = (1*205.138 + 1*218.9) - (1*165.20 + 1*238.93)

ΔS = 19.91 J/K

6 0
3 years ago
The combustion of 135 mg of a hydrocarbon produces 440 mg of CO2 and 135 mg H2O. The molar mass of the hydrocarbon is 270 g/mol.
NeX [460]

Answer:

Molecular formula = C20H30

Explanation:

NB 440mg = 0.44g, 135mg= 0.135g

From the question, moles of CO2= 0.44/44= 0.01mol

Since 1 mol of CO2 contains 1mol of C, it implies mol of C = 0.01

Also from the question, moles of H2O = 0.135/18= 0.0075mole

Since 1 mol of H2O contains 2mol of H, it implies mol of H = 0.0075×2= 0.015 mol of H

To get the empirical formula, divide by smallest number of mole

Mol of C = 0.01/0.01=1

Mol of H = 0.015/0.01= 1.5

Multiply both by 2 to obtain a whole number

Mol of C =1×2 = 2

Mol of H= 1.5×2 = 3

Empirical formula= C2H3

[C2H3] not = 270

[ (2×12) + 3]n = 270

27n = 270

n=10

Molecular formula= [C2H3]10= C20H30

5 0
3 years ago
Which best describes the role of a primary consumer in a food web? (3 points)
Orlov [11]

Answer:

A; or carnivores that feed on producers

Explanation:

6 0
2 years ago
Read 2 more answers
Laura sees a horse pulling a buggy.
Tcecarenko [31]

Answer:

B

Explanation:

I think that the anserw is B.

4 0
2 years ago
How do I write an introduction in chemistry report? the experiment is seeing which ionic compounds produce precipitates.
tensa zangetsu [6.8K]

Answer:you can write the definition of some main words in your experiment and the main idea of the experiment and how the experiment is to talk about.

Explanation:

3 0
2 years ago
Other questions:
  • What is the number of electron and neutron protons in atom 35?
    8·1 answer
  • Write the formal charge for C,H and O in CH3COOH
    15·2 answers
  • So, I have missed school around three days out of the week. and in science, we are going over the periodic table, I suppose.. an
    7·1 answer
  • Displacement is called vector quantity. Why?
    12·1 answer
  • What is the atomic number of an element that has seven protons and eight neutrons and seven electrons?
    9·2 answers
  • If the concentration of products is increased the equilibrium is shifted from * left to right/ to the left/ right to left /down
    5·1 answer
  • a wooden block with a mass of 2.0kg starts from at the top of an inclined plane and ends with a force of 25N at the bottom what
    14·1 answer
  • ILL GIVE THE BRAINLIST HELP ME ASAP
    9·1 answer
  • Which compound is made from metals and non metals​
    8·1 answer
  • ASAP HURRY FOR BRAINLIST
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!