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
postnew [5]
2 years ago
11

Pls help asap!!!!!!!

Chemistry
1 answer:
Maru [420]2 years ago
7 0
Can you send a better pic
You might be interested in
Which of the newman structures below represents this conformation of 2-methyl-3-pentanol, as viewed along the c2-c3 bond?
castortr0y [4]

Answer:

(4) option is correct

Explanation:

Given that,

The conformation of 2-methyl-3-pentanol, as viewed along the C₂-C₃ bond.

We need to find the Newman structures

Using given structures

The structure of 2- methyl-3- pentanol is shown in figure.

Through C₂-C₃ carbon shown the structure of Newman projection in figure.

Here, carbon 2 is in front side and carbon 3 is in back side in the figure.

Hence, (4) option is correct.

5 0
3 years ago
4). One mole of monoclinic sulfur at 25C was placed in a constant-pressure calorimeter whose heat capacity (C) was 1620 J/K. T
andre [41]

<u>Answer:</u> The enthalpy change of the reaction is -243 J/mol

<u>Explanation:</u>

The heat released by the reaction is absorbed by the calorimeter and the solution.

The chemical equation used to calculate the heat released follows:

q=c\times \Delta T

where,

c = heat capacity of calorimeter = 1620 J/K

\Delta T = change in temperature = 0.150^oC=0.150K   (Change remains same)

Putting values in above equation, we get:

q=1620J/K\times 0.15K=243J

<u>Sign convention of heat:</u>

When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.

For the given chemical reaction:

S\text{ (monoclinic)}\rightarrow S\text{ (orthorhombic)}

We are given:

Moles of monoclinic sulfur = 1 mole

  • To calculate the enthalpy change of the reaction, we use the equation:

\Delta H_{rxn}=\frac{q}{n}

where,  

q = amount of heat released = -243 J

n = number of moles = 1 mole

\Delta H_{rxn} = enthalpy change of the reaction

Putting values in above equation, we get:

\Delta H_{rxn}=\frac{-243J}{1mol}=-243J/mol

Hence, the enthalpy change of the reaction is -243 J/mol

8 0
3 years ago
The student is now told that the four solids, in no particular order, are calcium bromide (CaBr2), sugar (C6H12O6), butanoic aci
sladkih [1.3K]
<span>Help 
How did the First Great Awakening affect attitudes toward religion in the colonies during the early 1700s?</span>
5 0
3 years ago
What is the mass number of chlorine?
Anastasy [175]

Answer:

Explanation:

35.453 u

7 0
2 years ago
How is sodium extracted from is ore?
Aloiza [94]

Answer:

Sodium is extracted from it's ore by electrolysis of fused sodium chloride.

Explanation:

he process is usually carried out ia a special electrochemical cell called the downs cell. While molten sodium metal is collected at the cathode and also sent to tanks for cooling and storage.

5 0
3 years ago
Other questions:
  • PLEASE HELP <br> describe the process of paper chromatography????????????
    13·1 answer
  • he volume required to reach the equivalence point of an acid-base titration depends on the volume and concentration of the acid
    5·1 answer
  • 45.8 g of NaCl is dissolved in 500. mL of a water (d = 1.00 g/mL) and is placed in the freezer at -1 °C overnight. Which stateme
    14·1 answer
  • The melting of wax is a physical change, yet the burning of wax is a chemical change. what is the essential difference between t
    14·1 answer
  • Which term refers to the process by which ions that have entered solution are kept in solution
    14·1 answer
  • Consider the cell described below at 287 K: Pb | Pb2+ (1.07 M) || Fe3+ (2.13 M) | Fe Given the standard reduction potentials fou
    6·1 answer
  • 2Cl(g) ⇌ Cl2(g)
    5·1 answer
  • Use your periodic table to determine which element in the group below would be least likely to react with the other elements ?
    9·2 answers
  • How many grams of CO2 would be made from 3.0 g of C6H6? Please no links
    13·1 answer
  • When 3.915 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 12.74 grams of CO2 and 3.913 grams of H
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!