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
Luba_88 [7]
3 years ago
7

How many sig figs are in 0.0050340​

Chemistry
1 answer:
olga2289 [7]3 years ago
7 0
There are 5 sig figs
You might be interested in
Explain different ways you could increase the reaction rate, and/or decrease the reaction rate
Arada [10]
Ways to increase reaction rate:
*increase the total surface area per volume ratio
*increase the temperature
*increase the pressure
*decrease the size of particles
7 0
3 years ago
(1) Write the net ionic equation for the reaction that occurs when equal volumes of 0.233 M aqueous acetylsalicylic acid (aspiri
AveGali [126]

Complete Question

The complete question is shown on the first uploaded image

Answer:

 1)  The ionic equation is  

HC_9H_7O_4 + (C_2 H_5)_3 N -----> C_9H_7O_4^- + (C_2 H_5)_3 NH^-

2

  At equilibrium The  aniline will be  favored

3

The pH  of the solution is   pH  = 7.12

Explanation:

  From the question we are told that

      The concentration of aspirin is  C_A = 0.233M

      The acid dissociation  constant for aspirin is  K_a = 3.0*10^{-4}

       The base  dissociation constant for aniline is  K_b = 7.4 *10^{-10}

The molecular formula for aspirin  is  HC_9H_7O_4

The molecular formula for aniline  is   (C_2 H_5)_3 N

So the net ionic reaction is  

     HC_9H_7O_4 + (C_2 H_5)_3 N -----> C_9H_7O_4^- + (C_2 H_5)_3 NH^-

Generally pKa is mathematically evaluated as

                  pKa = -log(3.0*10^{-4})

                           = 3.52

Generally pKb is mathematically represented as

                  pKa = -log(7.4*10^{-10 })

                           = 9.13

Generally

                    pKa + pKb = 14

So for the triethylammonium salt  produced the pKa is

                  pK_a__{s}} = 14 - 3.28

                            = 10.72          

 As a result of the   pKa  of  aspirin being lower that that of  triethylammonium salt at equilibrium it implies that  aniline would be favored

The pH of the solution is mathematically represented as

           Since they are of equal mole

     pH  =  \frac{1}{2}  (pKa + pKb + pKw)

Where pKw is the pKw of water which has a value of 14

pH   =  0.5(14 + 3.52 + 3.28)

    pH  = 7.12

5 0
3 years ago
Read 2 more answers
In the dehydration of hydrated salt the sample was slightle moist because of high humidity briefly explain how the moisture affe
jenyasd209 [6]

Answer:

identify and name the landforms in the following diagrams

8 0
3 years ago
Which equation represents a neutralization reaction?
sergij07 [2.7K]
A neutralization reaction is in essence a reaction between an acid an a base which usually results in pH neutral compounds being formed (a salt and water).  Therefor the answer would be OPTION A  (<span>base + acid → salt + water)</span>
6 0
3 years ago
How does water move on its own concentration gradient?
kifflom [539]
Are you speaking of a density gradient, in which a more concentrated solution moves below a less concentrated solution?

In that case, the more concentrated solution has the greater density, and it will gradually sink below the less concentrated solution. 

In the same way, a stone will sink in water, which is less dense than the stone.
7 0
3 years ago
Read 2 more answers
Other questions:
  • How many neutrons does the isotope N-14 have? 6 7 8 9
    7·2 answers
  • The phase of matter can be changed by:
    14·2 answers
  • What is the third most common gas found in the air we breath?
    15·2 answers
  • At which of the following temperatures is the average kinetic energy of the molecules of a substance the greatest?
    8·2 answers
  • Which of the following substance is not an acid? 1. Substance A is tested and found to have a pH of 3. 2. Substance B, a common
    5·2 answers
  • Why the noble gases are found in small amounts in the earth's atmosphere?
    7·1 answer
  • Suppose you perform a titration of an unknown weak acid solution. You start with 4.00 mL of the weak acid and find that it takes
    7·1 answer
  • How can you find the amount of valence electrons an atom of an element contains?
    5·1 answer
  • How may moles are in 88.4 grams of Al(OH)3?
    8·1 answer
  • Solids are not Fluids because ?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!