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
Gwar [14]
3 years ago
8

A student measures the pH of a solution to be 6.8. Which should the student add if she wants to decrease the pH of the solution?

Physics
2 answers:
zloy xaker [14]3 years ago
7 0
The neutral pH is 7. Less than 7 indicates an acid and more than 7 indicates a base (up to 14).
<span> NaCl - it's a salt (we can't measure the pH)
H2O - it can be an acid but also a base  (the pH it is almost neutral,meaning close to 7 )
HF - it is a strong acid
</span><span> KOH  - it is a strong base (pH=14)
</span>
                        ↓

He needs to use HF (Hydrogen fluoride) to decrease the pH.


vichka [17]3 years ago
5 0
HF is the answer because it is an acid so it decreases overall ph. Did you understand?
You might be interested in
How many oxygen (O) atoms are in a molecule of SiO2?<br> O A. 1<br> OB. 3<br> C. 4<br> D. 2
mafiozo [28]
I believe it is D. 2
3 0
2 years ago
Read 2 more answers
Newton’s first law describes the tendency calles
beks73 [17]
The first law is about force or push and pull
5 0
3 years ago
Read 2 more answers
In terms of matter and resources, Earth is essentially a(n) ________ system ; in terms of energy, Earth is a(n) ________ system.
Savatey [412]

Answer:

b

Explanation:

6 0
3 years ago
Which type of wave does NOT have a crest?
ahrayia [7]
B is your answer oscillating
4 0
3 years ago
Be sure you understand why a pendulum in equilibrium hanging in a car that is accelerating forward tilts backward, and then cons
Gnesinka [82]

Answer:

A helium filled balloon floats forwards in a accelerating car because of the pressure difference between the front and the back of the car. When the car is accelerating, the air moves relitive to the car and the consequence is that the pressure in the back is slightly higher than in the front; which results in net force in forward direction.

hit that heart please leave brainliest and let me know if want me to answer or explain it in a different way :)

6 0
3 years ago
Other questions:
  • Nancy applies a force to a violin string by pulling her bow across it. The vibrations of the string produce sound waves, which c
    14·2 answers
  • Jed drops a 18 kg box off of the Eiffel tower. After 6.1 seconds, how fast is the box moving (neglect air resistance.)
    14·2 answers
  • Current passes through a solution of sodium chloride. In 1.00 second, 2.68×1016Na+ ions arrive at the negative electrode and 3.9
    9·1 answer
  • Give the method of heat transfer and give it application in a thermoflask​
    11·2 answers
  • In a closed system with no friction, a red sphere of 2.5 kg stands stationary. A blue sphere with a mass of 5.8 kg approaches th
    15·1 answer
  • Which liquid is the most viscous?<br><br> syrup<br> water<br> milk<br> apple juice
    14·2 answers
  • As part of a physics experiment, you carry a bathroom scale calibrated in newtons onto an elevator and stand on it. At rest, you
    7·1 answer
  • Please solve this worksheet for me It’s very important please don’t write unnecessary things or else I’ll report please help me
    11·1 answer
  • If electrical current is moving through a horizontal wire toward your face, what direction is the induced magnetic field?
    10·1 answer
  • If you were rolling a toy car down an incline, what would happen if you made the incline steeper? Explain why this happens using
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!