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
irina [24]
3 years ago
9

What is the pH of a 75.0 mL solution that is 0.045 M in weak base and 0.053 M in the conjugate weak acid

Chemistry
1 answer:
noname [10]3 years ago
3 0

Answer:

7.07

Explanation:

HA = weak acid = 0.053

A+ = conjugate base = 0.045

Ka = 7.2x10^-8

Ka = [H+][A-]/HA

7 2x10^-8 = [H+][0.045]/0.053

[H+] = 7.2x10^-8 x 0.053/0.045

= 8.48x10^-8

PH = -log[H+]

= -log[8.48x10^-8]

PH = -[login.48 + log10^-8]

PH = -0.928 - (-8)log10

= 7.07

You might be interested in
How do rivers affect watersheds?
beks73 [17]

Answer:

Explanation:

the last one I read it

5 0
3 years ago
Read 2 more answers
Two students were discussing the Mono Lake ecosystem. The first student said, "For a 20-kilogram (kg) coyote to survive, it take
melamori03 [73]

Answer:

The second student is right.

Explanation:

The coyote feed on not only phalaropes but many other organisms present in the environment for its survival. There are many other organisms present in the ecosystem such as mice, squirrel, cactus fruit etc. The coyote feeds on phalaropes, the phalaropes feeds on brine shrimp and the brine shrimp feeds on algae for its survival so in this way the ecosystem moves in the forward direction. The coyote feeds on phalaropes so the energy that is present in phalaropes transferred into coyote which only 10 % while the remaining is released in the atmosphere in the form of heat energy.

6 0
3 years ago
__Mg + __Fe2O3 -> __MgO + __Fe
Anika [276]

Answer:

Your correct answer is A. 1,2,1,2

Explanation:

Please mark brainliest!

7 0
3 years ago
Fill in the missing spaces in the chart. Will give brainliest.
lana [24]

Explanation:

9/4 Be +2 (the 9 and 4 are stacked next to Be). Atomic #: 4

Mass #: 9, # protons: 4, # neutrons: 5, #electrons: 2.

31/15 P (31 is stacked over 15 next to the P). Atomic #: 15,

Mass #: 31, # protons: 15, # neutrons: 16, # electrons: 15.

3 0
3 years ago
How many moles of oxygen are in 5.6 moles of al(oh)3?
Mashcka [7]
5.6 Al(OH)3
5.6 Al, 16.8 O, 16.8 H

16.8 mols of oxegyn in 5.6 mols of Al(OH)3
7 0
3 years ago
Other questions:
  • How could dumping pollutants, such as motor oil, in your driveway be hazardous to the neighbor 20 miles away?
    13·2 answers
  • Recovery standards are a necessary tool for determining exactly how much of a particular analyte you are able to extract from a
    6·1 answer
  • How does a balanced equation show the conversation of mass
    5·1 answer
  • 1. The density of a substance is 4.8 g/mL. What is the volume of a<br> sample that is 19.2 g?
    14·1 answer
  • A substance is tested in a lab. It is found to maintain a unique shape and is a good conductor of electricity. If it is made up
    5·2 answers
  • A mole of X reacts at a constant pressure of 43.0 atm via the reaction X(g)+4Y(g)→2Z(g), ΔH∘=−75.0 kJ Before the reaction, the v
    15·1 answer
  • What is the chemical formula of a trisaccharide made of three bonded glucose molecules?
    6·1 answer
  • Whats the balance to Sr + O, SrO​
    5·1 answer
  • QUESTION 5<br> How can you increase the kinetic energy of the particles in a substance?
    13·2 answers
  • If you see trapped bubbles ,you have to tap the cover slip using a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!