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
fiasKO [112]
3 years ago
11

A light or optical microscope most commonly uused is a

Chemistry
1 answer:
kirill115 [55]3 years ago
4 0
A bright feild is most commonly used 
You might be interested in
I don't know how to do any of these.plz help.its a study guide for my chemistry exam tomorrow ✌
Vladimir [108]

6.02 x 1023 atoms weigh out 63.55 grams copper.


No. of Molecules in water = 3.5mole x (6.02 x 10^23) molecules/mole = 2.107 x 10^24 molecules of H2O

8 0
3 years ago
What is sewageband dirty amd water​
Sav [38]

Answer:

Sewage is a liquid containing wastes from households, industrial and agricultural activities discharged into water and it is dirty water.

7 0
2 years ago
What is The pH and pOH of a 1.00x10-3M solution of CH3COOH (Ka=1.75x10-5) ?
zaharov [31]

Answer:

<h2>pH = 3.9</h2><h2>pOH = 10.1</h2>

Explanation:

Since CH _ 3COOH is a weak acid to find the pH of CH _ 3COOH we use the formula

pH =  -  \frac{1}{2}   log(Ka)  -  \frac{1}{2}  log(c)

where

Ka is the acid dissociation constant

c is the concentration

From the question

Ka of CH _ 3COOH = 1.75 × 10^-5

c = 1.00 × 10-³M

Substitute the values into the above formula and solve for the pH

That's

pH =  \frac{1}{2} ( -  log(1.75 \times {10 }^{ - 5} -  log(1.00 \times  {10}^{ - 3} )  )  \\   =  \frac{1}{2} (4.757  + 3) \\  =  \frac{1}{2}  \times 7.757) \\  = 3.8785 \:  \:  \:  \:  \:  \:  \:  \:

We have the answer as

<h3>pH = 3.9</h3>

To find the pOH we use the formula

pH + pOH = 14

pOH = 14 - pH

pOH = 14 - 3.9

We have the answer as

<h3>pOH = 10.1</h3>

Hope this helps you

4 0
3 years ago
Grease is applied to the moving part of machine. <br>​
RideAnS [48]

Answer:

Explanation:

The moving part won't move on its own there's a force but the force isn't enough for something like a bike chain it need grease to move smoothly or else it will just be super stuck or slow.

6 0
3 years ago
Read 2 more answers
Which formula shows a substance that is not molecular?
Scrat [10]
H ( hydrogen ) is the answer I believe.
8 0
3 years ago
Read 2 more answers
Other questions:
  • It takes 770 joules of energy to raise the temperature of 50.0 g of Mercury by 110°C. What is the specific heat capacity of merc
    8·1 answer
  • 22 points!
    8·1 answer
  • if a 1.85g mass of zinc produces 475 mL og gas and your balloon weighs 0.574 g and the room temperature is 20.5°C. calculate the
    13·1 answer
  • Is the following sentence true or false carbon atoms can only form a single bond between other carbon atomd?
    11·1 answer
  • The natural source of acidity in rain water is _____.
    12·2 answers
  • Which resulted from the study of chemistry?
    7·2 answers
  • A point has no demension.​
    8·1 answer
  • Based on the crystal- field strength cl-
    11·1 answer
  • Give two characteristics of liquid state<br>​
    12·1 answer
  • 3. as a substitution reaction occurs, the number of electrons shared between
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!