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
xenn [34]
3 years ago
9

Why can certain stars sometimes be identified as eclipsing binary stars

Chemistry
1 answer:
Verizon [17]3 years ago
7 0
They become dimmer at regular intervals.
You might be interested in
Balance the equation and write the reaction-quotient expression, qc. u(s) + f2(g) ----> uf6(g)
Alona [7]
The equation presented above is that of uranium reacting with fluorine forming uranium fluoride. 

The chemical reaction can be balanced by carefully studying the equation and balancing the number of atoms of each of the element in both sides of the chemical reaction. That is,
 
                  <em>         U(s) + 3F₂(g) --> UF₆(g)</em>
4 0
3 years ago
Read 2 more answers
explain why it is a common laboratory procedure to heat analytical reagents and store them in a dessicated atmosphere (a sealed
Readme [11.4K]

Explanation:

Most reagent forms are going to absorb water from the air; they're called "hygroscopic".  Water presence can have a drastic impact on the experiment being performed  For fact, it increases the reagent's molecular weight, meaning that anything involving a very specific molarity (the amount of molecules in the final solution) will not function properly.

Heating will help to eliminate water, although some chemicals don't react well to heat, so it shouldn't be used for all.  A dessicated environment is simply a means to  "dry."  That allows the reagent with little water in the air to attach with.

6 0
3 years ago
What is mole concept? how to do its numericals​
Goryan [66]
6.02x10^23
basically written out

6.02 times 10 to the 23rd power if you’re using a calculator.

I TRIED SORRY! :)
4 0
3 years ago
What is the name of this hydrocarbon? <br> A: propane<br> B: pentene<br> C: butene<br> D: ethane
avanturin [10]

I don't think it's any of the above. Because there is two double carbon bonds and it belongs to an alkene, it should be an ethene molecule.

3 0
3 years ago
Read 2 more answers
Determine the pH of a 0.461 M C6H5CO2H M solution if the Ka of C6H5CO2H is 6.5 x 10-5. Determine the pH of a 0.461 M C6H5CO2H M
valkas [14]

Answer:

the answer

Explanation:

the answer

3 0
3 years ago
Other questions:
  • Calcium hydroxide has the formula Ca(OH)2.
    9·1 answer
  • What does reaction b tell you about the type of molecule h2co3 is?
    14·1 answer
  • Express 66.3 L to milliliters.
    14·2 answers
  • Compare the relative charge and mass of each of the subatomic particles? pleaseeee help me this is for a homework in my chemistr
    5·1 answer
  • 3. Use the balanced chemical equation from the last question to solve this situation: You combine 0.5 grams of Na2CO3 with exces
    8·1 answer
  • According to the following reaction, how many grams of carbon tetrachloride will be formed upon the complete reaction of 27.7 gr
    5·1 answer
  • How many moles are there in 1.68 * 10 ^ 24 molecules of nitrogen dioxide?
    9·1 answer
  • A chemist must prepare of hydrochloric acid solution with a pH of at . He will do this in three steps: Fill a volumetric flask a
    10·1 answer
  • Can someone help me?
    11·1 answer
  • In your opinion, will all the objects in the Universe last forever? Justify your answer.​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!