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
Finger [1]
3 years ago
6

When using science to investigate physical phenomena, which characteristic of the event must exist?

Chemistry
1 answer:
Maru [420]3 years ago
5 0
 "Observable" is the one characteristic of event that must exist when <span>using science to investigate physical phenomena. </span>
You might be interested in
The diagram below represents the rock cycle.
spayn [35]

Answer:

Heat and Pressure

Explanation:

4 0
3 years ago
You have a solution that is 0.02M formate (HCOO-) and 0.03M formic acid (HCOOH), which has a Ka of 1.8x10-4. What is the pH of t
lisov135 [29]

Answer:

3.6

Explanation:

Step 1: Given data

  • Concentration of formic acid: 0.03 M
  • Concentration of formate ion: 0.02 M
  • Acid dissociation constant (Ka): 1.8 × 10⁻⁴

Step 2: Calculate the pH

We have a buffer system formed by a weak acid (HCOOH) and its conjugate base (HCOO⁻). We can calculate the pH using the <em>Henderson-Hasselbach equation</em>.

pH = pKa +log\frac{[base]}{[acid]} = -log 1.8 \times 10^{-4} + log \frac{0.02}{0.03} = 3.6

6 0
3 years ago
Why does magma in the mantle rise through the crust above it
Natali5045456 [20]
Currents from the lava
4 0
3 years ago
Read 2 more answers
You are a researcher with an interest in understanding the mechanism of serine protease enzymes. To test the effect of the role
yawa3891 [41]
Ngl didn’t read it so I’m not gonna answer it. Don’t report please just want to ask a question but have to answer two
5 0
3 years ago
Are all mixtures solutions?​
marin [14]

Answer:

Not all mixtures are solutions. A solution is a specific term that describes an even or homogeneous mixture of a solute, the substance being mixed, in a solvent, the substance that is in a greater amount in which the solute dissolves. All solutions are mixtures because it is two or more substances mixed together.

Explanation:

7 0
3 years ago
Other questions:
  • An unknown substance can be identified by
    9·1 answer
  • How do you find pH if Distilled water is the solvent
    15·1 answer
  • What is the chemical formula for a compound between Li and Br?
    6·1 answer
  • Any help would be appreciated. Confused.
    15·1 answer
  • Arrange the following oxides in order of increasing acidity.
    11·1 answer
  • Student A performed gravimetric analysis for sulfate in her unknown using the same procedures we did . Results of her three tria
    8·1 answer
  • Which one of the following does not describe an acid​
    9·2 answers
  • A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is a _______ react
    13·2 answers
  • A certain metal M forms a soluble sulfate salt M2SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 5
    13·1 answer
  • Which is the right answer?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!