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
Svetradugi [14.3K]
3 years ago
15

What is the total number of hydrogen atoms in a molecule of heptyne?

Chemistry
1 answer:
Step2247 [10]3 years ago
6 0

Answer:

12

Explanation:

alkyne formula is CnH2n-2

heptyne = 7

You might be interested in
What is the most significant breakthrough in forensic science since the development of fingerprinting?
andreyandreev [35.5K]
DNA testing which I think is the largest breakthrough.
5 0
3 years ago
The estimated heat of vaporization of diethyl ether using the Chen's rule is A. 29.7 KJ/mol B. 33.5 KJ/mol C. 26.4 KJ/mol D. 36.
Brums [2.3K]

Answer:

C. 26.4 kJ/mol

Explanation:

The Chen's rule for the calculation of heat of vaporization is shown below:

\Delta H_v=RT_b\left [ \frac{3.974\left ( \frac{T_b}{T_c} \right )-3.958+1.555lnP_c}{1.07-\left ( \frac{T_b}{T_c} \right )} \right ]

Where,

\Delta H_v is the Heat of vaoprization (J/mol)

T_b is the normal boiling point of the gas (K)

T_c is the Critical temperature of the gas (K)

P_c is the Critical pressure of the gas (bar)

R is the gas constant (8.314 J/Kmol)

For diethyl ether:

T_b=307.4\ K

T_c=466.7\ K

P_c=36.4\ bar

Applying the above equation to find heat of vaporization as:

\Delta H_v=8.314\times307.4 \left [ \frac{3.974\left ( \frac{307.4}{466.7} \right )-3.958+1.555ln36.4}{1.07-\left ( \frac{307.4}{466.7} \right )} \right ]

\Delta H_v=26400 J/mol

The conversion of J into kJ is shown below:

1 J = 10⁻³ kJ

Thus,

\Delta H_v=26.4 kJ/mol

<u>Option C is correct</u>

6 0
4 years ago
The electron configuration of an element is 1s2 2s2 2p1. How many valance electrons does the element have. 1,2,3 or 4
kotykmax [81]

Answer:

3

Explanation:

5 0
3 years ago
Read 2 more answers
When lithium and fluorine combined, what is the compound form
VashaNatasha [74]
Lithium fluoride is the compound name
7 0
3 years ago
Read 2 more answers
Compare your predicted ranking of the objects’ volumes with their final ranking based on their measurements. What are the advant
Schach [20]

Answer:

Since its data sample can be quantified using fixed numerical parameters, quantitative observation yields more accurate results than qualitative observation and it is suitable for statistical investigations.

Explanation:

8 0
3 years ago
Other questions:
  • How can you build an electromagnet?
    12·1 answer
  • 134 miles= ? inches. Chemistry
    8·2 answers
  • The molar mass of a substance is 92.010g. The substance is 30.4% nitrogen and 69.9% oxygen. What is the empirical formula and th
    9·1 answer
  • Initially, the chalk had a mass of 323.5 grams but upon completion, its mass had dropped to 301.2 grams. What is the change in m
    12·1 answer
  • What are the alkaline earth metals?
    9·1 answer
  • In which type of mirror do you see the most realistic virtual image
    6·1 answer
  • Osmosis is a type of diffusion
    11·2 answers
  • Oxygen has an electronegativity of 3.4, phosporus has an electronegativity of 2.2 The bond between them is
    5·1 answer
  • Please help due in 5 min.
    8·1 answer
  • What would the potential of a standard hydrogen electrode (s. h. e. ) be under the given conditions? [h ]=0. 84 mh2=2. 2 atm=298
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!