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
Ainat [17]
3 years ago
11

Compare the two types of optical telescopes

Chemistry
1 answer:
Jet001 [13]3 years ago
3 0

Answer: Reflectors use a mirror to collect the light, whilst refractors use a lens while, Refractor telescopes require a large lens at the front to direct the incoming light to the lens.

You might be interested in
Can you help me plz will mark brainlyiest
alexira [117]

Answer:

I would help but the picture will not load for me :(

Explanation:

6 0
2 years ago
Read 2 more answers
PLSSS HELP MEE 100 POINTS!!!!!!! How many atoms of each element does magnesium hydroxide, Mg(OH)2, contain? Magnesium = 1 atom,
Basile [38]

It would be Magnesium = 1 atom, Oxygen = 2 atoms, Hydrogen = 2 atoms. It has 5 atoms total. There is 1 magnesium and you multiply each element by the the 2 outside the parenthesis to get 2 oxygen and 2 hydrogen.

5 0
3 years ago
Read 2 more answers
An atom Q contains 19 electrons, 19 protons and 20 neutrons. <br> What is Q
ZanzabumX [31]
Answer: Potassium

Explanation: Potassium is the chemical element with 19 electrons, 19 protons and 20 neutrons.

Please mark me Brainliest if you think that had answer this question in a better way.

Thank you,
3 0
3 years ago
Read 2 more answers
At what temperature do the gas and liquid phases become<br> indistinguishable from each other?
sergiy2304 [10]

Answer:

100 C or 212 F

Explanation:

That is the boiling point for liquid so both gas and liquid are presented.

5 0
2 years ago
Read 2 more answers
Name a possible product of this reaction in the presence of ether and AlCl3: methylbenzene + 1-chlorodecane.a. 1-methyl-2-decylb
Vikki [24]

Answer:

None of these

Explanation:

Friedel–Craft reaction is a reaction involves the attachment of substituents to the benzene ring.

Mechanism of the reaction of methylbenzene with 1-chlorodecane in the presence of ether and aluminum chloride :

Step -1 : Generation of stable carbocation.

Aluminium chloride acts as Lewis acid which removes the chloride ion from the alkyl halide forming carbocation. The primary carbocation thus formed gets rearranged to secondary primary carbocation which is more stable due to hyperconjugation.

Step-2: Attack of the ring to the carbocation

The pi electrons of the ring behave as a nucleophile and attacks the carbocation. Since, the group attached on the benzene is methyl (+R effect) , the attack is from the ortho and the para positions. Para product is more stable due to less steric hinderance.

The product formed is shown in mechanism does not mention in any of the options.

So, None of these is the answer

8 0
3 years ago
Read 2 more answers
Other questions:
  • What happens when Identical objects are dropped at different gravitational forces
    14·1 answer
  • Which could make up a solution?
    9·1 answer
  • A mixture of three noble gases has a total pressure of 1.25 atm. The individual pressures exerted by neon and argon are 0.68
    9·1 answer
  • Which of the following best describes a double-replacement reaction?
    14·1 answer
  • Choose all the answers that apply. Nitrogen has an atomic number of 7. Its atomic mass is 14. Nitrogen has _____. seven electron
    8·2 answers
  • Assuming a 100% dissociation, what is the freezing point and boiling point of 2.59 m K3PO4(aq).
    5·2 answers
  • PLEASE HELP OR EXPLAIN!!
    14·1 answer
  • A student tests the pitch of different-sized rubber bands by stretching them around a box and then plucking them. What pitch doe
    15·1 answer
  • 3. If a gas exerts 1.2 atm of pressure at a volume of 31 liters and a temperature of 360K, how many moles of the gas are in the
    7·1 answer
  • Which element listed below is a nonmetal?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!