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
Dovator [93]
3 years ago
9

What is the area of the throat that contains the vocal cords and produces

Chemistry
1 answer:
aalyn [17]3 years ago
7 0
C larynx hope this helps
You might be interested in
Please help I will give brainiest
Sergio [31]

Answer:

Answer

Answer is option B coz da negative charge r more thn positive

8 0
3 years ago
Read 2 more answers
How many grams of oxygen are required to burn 0.10mole of c3h8?
Anastaziya [24]
1mol—44g/mol
0.10mol—x
x=0.10*44
x=4.4 g
8 0
3 years ago
The activation energy of an uncatalyzed reaction is 70 kJ/mol. When a catalyst is added, the activation energy (at 20 °C) is 42
denis23 [38]

Answer:

T = 215.33 °C

Explanation:

The activation energy is given by the Arrhenius equation:

k = Ae^{\frac{-Ea}{RT}}

<u>Where:</u>

k: is the rate constant

A: is the frequency factor    

Ea: is the activation energy

R: is the gas constant = 8.314 J/(K*mol)

T: is the temperature

We have for the uncatalyzed reaction:

Ea₁ = 70 kJ/mol

And for the catalyzed reaction:

Ea₂ = 42 kJ/mol

T₂ = 20 °C = 293 K

The frequency factor A is constant and the initial concentrations are the same.

Since the rate of the uncatalyzed reaction (k₁) is equal to the rate of the catalyzed reaction (k₂), we have:

k_{1} = k_{2}

Ae^{\frac{-Ea_{1}}{RT_{1}}} = Ae^{\frac{-Ea_{2}}{RT_{2}}}   (1)

By solving equation (1) for T₁ we have:

T_{1} = \frac{T_{2}*Ea_{1}}{Ea_{2}} = \frac{293 K*70 kJ/mol}{42 kJ/mol} = 488. 33 K = 215.33 ^\circ C  

Therefore, we need to heat the solution at 215.33 °C so that the rate of the uncatalyzed reaction is equal to the rate of the catalyzed reaction.

I hope it helps you!      

4 0
3 years ago
Which material has a greater density, lead or feathers?
algol13

Lead has a higher density


5 0
3 years ago
Calculate the pOH of a solution that contains 3.9 x 10-5 M H3O+ at 25°C.
exis [7]

Answer:

Option b. 9.59

Explanation:

First, let us calculate the pH. This is illustrated below:

[H3O+] = 3.9 x 10-5 M

pH = —Log [H3O+]

pH = —Log [3.9 x 10-5]

pH = 4.41

Recall: pH + pOH = 14

4.41 + pOH = 14

Collect like terms

pOH = 14 — 4.41

pOH = 9.59

6 0
3 years ago
Other questions:
  • For the reactionN2(g)+O2(g)?2NO(g)classify each of the following actions by whether it causes a leftward shift, a rightward shif
    15·1 answer
  • The structural level of a protein least affected by a disruption in hydrogen bonding is the
    14·1 answer
  • If you were presented with 2 l of a 2 m sucrose stock solution, how many grams of sugar would be in a 100 ml aliquot?
    7·1 answer
  • Convert 8.50 moles Ca to atoms
    7·1 answer
  • What is the value of delta Hrxn for this equation:
    15·1 answer
  • Help help please help help!!
    11·2 answers
  • A rectangular block floats in pure water with 0.5 inch above the surface and 1.5 inches below the surface. When placed in an aqu
    6·1 answer
  • Why does silicone dioxide have a high melting point ?
    5·1 answer
  • What type of weather is associated with high pressure?
    9·1 answer
  • The aria ""batter my heart"" from doctor atomic has musical influences from which era?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!